Pot cover with cover button convenient to disassemble and assemble and cover button assembly of pot cover

Abstract

The utility model discloses a cover button component in a pot cover, which is convenient to disassemble and assemble a cover button and comprises a cover body embedding structure or a cover body spiral structure and a cover button embedding structure or a cover button spiral structure, and the cover button embedding structure or the cover button spiral structure is arranged on the cover button. The cover body embedding structure or the cover body spiral structure is matched with the cover button embedding structure or the cover button spiral structure, so that an embedding structure or a spiral structure is formed. According to the pot cover, the structure that a cover button of an existing pot cover is fixed to a cover body through a screw joint structure is changed, the cover button is fixed through a detachable embedding structure or a cover body spiral structure of the cover button assembly, and then the use and storage mode of a traditional pot cover is changed; pot covers of various pots in a kitchen can be stacked in a concentrated mode or inserted on a storage rack, and when the pot cover is used, the cover button can be rapidly installed on the cover body for use through the embedded structure, so that the pot cover is suitable for the situation that the existing kitchen pots are various in type and pot bodies of a plurality of pots can be hung and stored, and a plurality of pot covers can be stably and compactly stored.

Description

[0001] This application is a divisional application of utility model patent application No. 202420675109.4, filed on April 3, 2024, entitled "A pot lid with a convenient detachable lid knob and the lid knob assembly thereof". Technical Field

[0002] This utility model belongs to the field of kitchenware and relates to a pot lid, especially a pot lid with a lid knob that can be easily disassembled and installed. Background Technology

[0003] In existing technologies, such as Figure 1 As shown, the pot lid includes a lid body 01 and a lid knob 02. The lid knob 02 is generally permanently fixed to the lid body 01 with screws. Traditionally, pot lids are stored by simply placing them on top of the pot. However, more and more pots are now hung up for storage, and with the increasing number of pots in modern kitchens, storing the matching lids becomes quite troublesome. Stacking multiple lids together takes up considerable storage space due to the lid knobs, and the stacked lids are also unstable. Existing pot lids, whether the lid knob is separated from the lid body or installed together, involve a complex process, making it inconvenient to remove the lid knobs from existing pot lids for centralized collection. Utility Model Content

[0004] The purpose of this utility model is to improve the shortcomings of the existing technology and provide a pot lid with a convenient detachable lid knob, so that the lid knob and the lid body can be easily disassembled and assembled, so that the lid knob can be removed when storing, reducing the space occupied by multiple pot lids and improving storage stability, and also making it easy to combine them for use.

[0005] Another objective of this invention is to provide a lid knob assembly in the pot lid.

[0006] The purpose of this utility model is achieved as follows:

[0007] A pot lid with a detachable lid knob includes a lid body and a lid knob. The lid body and the lid knob are respectively provided with matching lid body fitting structure or lid body spiral structure and lid knob fitting structure or lid knob spiral structure, thereby forming a fitting structure or spiral structure. The lid knob is detachably fitted or screwed onto the lid body through the fitting structure or spiral structure.

[0008] For ease of explanation, we define the side of the lid facing the pot as the inside and the opposite side as the outside.

[0009] In the pot lid, the fitting structure can specifically be as follows: wherein:

[0010] The cover fitting structure is arranged on the outer side of the cover fitting component and the inner side of the cover fixing component, and is fixed on the cover through the mounting hole arranged on the cover.

[0011] The cover knob fitting structure is arranged on the inner side end surface of the cover knob, i.e. the connection end of the cover knob.

[0012] The fitting structure can also be another case:

[0013] The fitting structure is, wherein

[0014] The cover fitting structure is a cover knob mounting hole on the cover, which is a non-circular hole; or,

[0015] The cover fitting structure includes a cover, an outer side fixing component and an inner side fixing component,

[0016] The cover is provided with a connection hole;

[0017] The outer side fixing component is an end cap arranged on the outer side of the cover, and the non-circular cover knob mounting hole is arranged on the outer side fixing component. An outer connecting pipe is arranged on the inner side of the outer side fixing component and matches the connection hole on the cover. The end edge of the outer side fixing component on the outer side of the outer connecting pipe is attached to the outer surface of the cover.

[0018] The inner side fixing component is a sealing cover arranged on the inner side of the cover. An inner connecting pipe is arranged on the outer side end surface of the inner side fixing component and matches the outer connecting pipe on the outer side fixing component. The outer connecting pipe and the inner connecting pipe are inserted and fixed with each other. The outer connecting pipe can be inserted into the inner connecting pipe, or the inner connecting pipe can be inserted into the outer connecting pipe. The end edge of the inner connecting pipe on the outer side of the inner side fixing component is attached to the inner surface of the cover.

[0019] The outer side fixing component with the cover knob mounting hole is fixed on the cover through the inner side fixing component;

[0020] The cover knob fitting structure matches the cover fitting structure with the non-circular cover knob mounting hole. The cover knob fitting structure is an insertion plate protruding outward on the inner side surface of the cover knob, which is a column with a non-circular cross-section, forming an insertion section. The maximum length of the cross-section of the insertion section is smaller than the maximum length of the cover knob mounting hole but larger than the minimum length of the cover knob mounting hole, so that the insertion plate can pass through the cover knob mounting hole. After the insertion plate is turned through a set angle, it is clamped on the cover and cannot be pulled out, so that the cover knob is fixed on the cover.

[0021] In order to make the inner fixing member and the outer fixing member better fit with the cover, the bottom surface of the inner connector tube is inwardly recessed from the outer surface of the cover by a distance, and / or the bottom surface of the outer connector tube is inwardly recessed from the inner surface of the cover by a distance.

[0022] Preferably, in the cover fitting structure, the non-circular cover knob mounting hole is a non-circular hole shaped like a dumbbell, and correspondingly,

[0023] In the cover knob fitting structure, the non-circular fitting segment on the outwardly convex plug-in plate is a dumbbell-shaped non-cylinder similar to the mounting hole; or,

[0024] In the cover knob fitting structure, the plug-in plate is inserted into the cover knob mounting hole, accommodated in the inner connector tube, and fixed to the end cover of the outer fixing member by rotating a set angle.

[0025] Preferably, in the cover fitting structure, the non-circular cover knob mounting hole shaped like a dumbbell is a small circular hole with a smaller diameter as a positioning hole, and two larger diameter same-center fan-shaped holes are connected on both sides of the center of the small circular hole, forming a non-circular hole shaped like a dumbbell.

[0026] Preferably, a plurality of grooves extending axially from the end surface of the inner connector tube by the length of the inner connector tube are provided on the side wall of the inner connector tube, so that the inner connector tube has radial elasticity and can be expanded and fixed in the outer connector tube when inserted into the outer connector tube.

[0027] Preferably, a recess or a through hole for clamping the cover knob is provided beside the cover knob mounting hole on the cover or the end cover of the outer fixing member connected to the cover, and correspondingly, a protrusion is provided on the opposite side surface of the plug-in plate on the cover knob, so that when the plug-in plate is rotated to a set angle, the protrusion is clamped into the recess or the through hole.

[0028] Specifically, the connecting hole on the cover is a circular hole, or a rectangular hole, or a polygonal hole.

[0029] Preferably, in the cover knob fitting structure, the outer end of the outwardly convex plug-in plate is axially extended with a connecting segment, the outer contour of the connecting segment is smaller than the cover knob mounting hole, the axial length d1 of the connecting segment is equivalent to the axial length D1 of the cover knob mounting hole, a shoulder is connected to the outer end of the connecting segment, or a shoulder is separately connected to the outer end of the connecting segment, a cylinder and an annular groove are respectively provided on the two end surfaces adjacent to the connecting segment and the shoulder, the cylinder is inserted into the annular groove, and a screw is additionally provided, and screw holes are provided on the plug-in plate and the connecting segment, and a screw hole is provided on the shoulder, the screw connects the separate connecting segment and the shoulder into one body, a spring is threaded on the screw rod between the connecting segment and the shoulder, and the spring is placed in the cylinder,

[0030] The outer contour of the shoulder is larger than the maximum length of the knob mounting hole, so that when the insertion plate of the knob is inserted into the knob mounting hole, the shoulder abuts against the outer side of the cover of the cover body 1 or the outer side fixing member, and the outer side of the shoulder is the knob.

[0031] The utility model also provides a pot cover, it includes cover body and knob, the knob is fixed on the cover body through cover body fitting structure and knob fitting structure,

[0032] The cover body is provided with a mounting hole,

[0033] The cover body fitting structure includes an inner knob fixing member, which includes a closure cover, an inner pipe is arranged on the outer side of the closure cover facing the cover body,

[0034] The knob fitting structure is provided with an outer pipe on the inner side of the knob facing the cover body, and a handle is arranged on the other side of the knob, the inner pipe is inserted into the mounting hole of the cover body, the outer circumference of the outer side of the inner pipe on the outer side of the closure cover is matched with the inner side of the cover body, the outer pipe on the knob is matched and inserted into the inner pipe, the outer circumference of the outer pipe on the inner side of the knob is matched with the outer side of the cover body, so that the inner knob fixing member fixes the knob on the cover body.

[0035] Preferably, the pipe wall of the inner pipe on the inner knob fixing member is provided with a plurality of axial slots from the outer end, so that the pipe wall of the inner pipe has elasticity in the radial direction, and when the outer pipe of the knob is inserted into the inner pipe, the inner pipe is lifted, so that the knob is more stable.

[0036] Preferably, the inner wall of the pipe of the inner pipe and the outer wall of the pipe of the outer pipe are provided with matching circumferential tooth grooves, so that they are more firmly fixed.

[0037] The mounting hole on the cover body is non-circular, for example, a rectangular hole, or a polygonal hole, and the shape of the inner pipe on the inner knob fixing member matched with the mounting hole on the cover body and the outer pipe on the knob is matched with the shape of the mounting hole on the cover body.

[0038] The fitting structure also has another preferred scheme:

[0039] The chimeric structure is: including a cover button and a lock needle, the cover button includes a cover button shell, which is a cylinder, the outer end face is closed by a rear end cover, the inner end face is provided with a front end cover, the center of the front end cover is provided with a through needle hole for inserting the lock needle, the outer end face of the front end cover is provided with a non-circular boss matched with the non-circular cover button mounting hole on the cover body, the other end face of the front end cover is provided with a handle clamping groove, and a handle through hole is arranged on the side wall close to the rear end cover or the rear end cover; the lock and unlock structure of the lock needle is arranged in the cover button shell, one end of the unlock handle is clamped in the handle clamping groove, and the other end is exposed from the handle through hole; the lock needle has a lock needle cap and a needle rod, the shape of the lock needle cap is the same as that of the boss, and the lock needle cap is in contact with the inner side of the cover body at a certain angle, or the lock needle cap is larger than the cover button mounting hole on the cover body, and the needle rod is inserted into the needle hole in the cover button shell and locked by the lock and unlock structure.

[0040] The lock and unlock structure can be: it includes a conical sleeve cap, a compression spring, an inner conical cylinder, a locking steel ball, an outer conical cylinder and an unlock pull handle, the conical sleeve cap is a conical cylinder, the small end is fixed on the inner side of the rear end cover of the cover button shell, the large end of the inner conical cylinder is inserted into the large end of the conical sleeve cap and is pressed against the conical inner wall of the conical sleeve cap, the compression spring is arranged between the conical sleeve cap and the inner conical cylinder, the three locking steel balls are clamped in the radial through hole on the conical side wall of the inner conical cylinder and can move radially, the end cover at the front end of the inner conical cylinder is provided with a boss, the boss is provided with a needle hole, the large end of the outer conical cylinder is inserted into the cover button shell and is combined and fixed with the large end of the conical sleeve cap, the front small end of the outer conical cylinder is provided with a cover plate, and the cover plate is provided with a through hole for the boss on the inner conical cylinder to pass through, the conical side wall of the outer conical cylinder limits the part of the locking steel ball exposed outside the inner conical cylinder; the unlock pull handle is a rod body, the cross rod at one end is clamped in the handle clamping groove on the front end cover and is limited, the cross rod is provided with a cross rod needle hole, the inner conical cylinder is fixedly connected with the cross rod or is pressed against the front end cover of the cover button shell and the boss (C141) through a spring, the cross rod is connected with one end of a connecting rod, the connecting rod is arranged in the cover button shell and outside the outer conical cylinder and the sleeve cap, the other end of the connecting rod is used as a handle and is exposed from the side wall of the cover button shell, or the cross rod is hingedly connected with the cover button shell, the other end of the connecting rod is connected with a button and is exposed from the handle through hole on the rear end cover of the cover button shell. When in use, the handle is operated, the inner conical cylinder is driven to move, the compression spring is compressed, the outer conical cylinder is moved, the locking steel ball is radially moved outward, the lock needle is unlocked, and the lock needle can be pulled out to separate the cover button and the lock needle, so that the cover button assembly is detached from the cover body.

[0041] The spiral structure is:

[0042] The cover screw structure is arranged on the outer side of the screw part of the cover screw assembly and the inner side of the fixing part of the cover screw assembly, and is fixed on the cover through the mounting hole arranged on the cover.

[0043] The cover knob screw structure is arranged on the inner side end surface of the cover knob, i.e. the connecting end of the cover knob.

[0044] Alternatively,

[0045] The screw structure is as follows: a cover (B1) and a cover knob assembly including a screw (B2), a connecting part (B3) and a cover knob (B4), a non-circular through hole (B11) is arranged in the middle of the cover (B1), the insertion part (B31) of the connecting part (B3) inserted into the through hole (B11) of the cover (B1) has a non-circular cross section matched with the through hole of the cover, a circular cross section of the abutting part (B32) is arranged at the rear of the insertion part (B31) and has a larger diameter than the long axis of the through hole (B11) of the cover, so as to abut the connecting part (B3) against the cover (B1), a screw hole (B33) is arranged at the center of the connecting part (B3), the end surface of the cover knob (B4) adjacent to the connecting part (B3) is matched with the adjacent end surface of the connecting part (B3), a screw hole (B41) is arranged at the center of the cover knob (B4), and the screw (B2) connects the connecting part (B3) and the cover knob (B4) into one body, the outer contour of the screw nut (B2a) is the same as that of the insertion part (B31) or is larger than that of the insertion part (B31).

[0046] Alternatively,

[0047] The screw structure is as follows: a screw (B2) and a cover knob (B4), the outer contour of the screw nut (B2a) of the screw (B2) is larger than the mounting hole (B11) of the cover, a non-circular boss (B2b) is arranged on the screw rod side surface of the screw nut or the inner side surface of the cover knob, matched with the mounting hole (B11) of the cover, the outer side end surface of the screw nut and the inner side end surface of the cover knob (B4) are matched with the inner side surface and the outer side surface of the cover (B1), and a screw hole (B41) is arranged on the cover knob.

[0048] A fixing structure is arranged between the chimeric part or the screw part and the fixing part.

[0049] Preferably, the chimeric structure can be a sliding chimeric structure or a rotating chimeric structure.

[0050] Specifically, the sliding chimeric structure can be:

[0051] The cover chimeric structure arranged on the outer side end surface of the chimeric part in the cover chimeric assembly is two mutually parallel outer convex plug-in parts or inner concave plug-in grooves.

[0052] The cover knob fitting structure is an insertion slot or an insertion part provided on the inner end surface of the cover knob and matched with the insertion part or the insertion slot on the fitting part, and the detachable connection of the cover knob and the cover body is achieved by inserting the insertion part into the insertion slot.

[0053] Specifically,

[0054] The insertion part can be two mutually parallel bent convex edges provided on the corresponding end surface, and correspondingly, the insertion slot can be a mutually parallel groove corresponding to the bent convex edges provided on the corresponding end surface.

[0055] The insertion part can also be a convex block on the corresponding end surface, at least two opposite edges of which form outward convex edges and are mutually parallel, and correspondingly, the insertion slot can be an insertion slot corresponding to the convex edges provided on the corresponding end surface, opposite two side walls of which match the two parallel edges of the convex block, and the port of at least one side of the insertion slot is provided as an opening on the edge of the corresponding end surface.

[0056] Specifically, the rotating fitting structure can be:

[0057] The cover body fitting structure provided on the outer end surface of the fitting part in the cover body fitting assembly is an outward convex insertion plate, which is non-circular in shape, or an insertion hole cavity provided on the outer end surface of the fitting part, the port of which has a non-circular insertion hole; correspondingly, the cover knob fitting structure is an insertion hole cavity provided on the end surface of the cover knob connecting end of the cover knob, which has a non-circular insertion hole provided thereon, or a convex non-circular insertion plate provided on the end surface of the cover knob connecting end of the cover knob.

[0058] The maximum length of the insertion plate is smaller than the maximum length of the insertion hole but larger than the minimum length of the insertion hole, so that the insertion plate can pass through the insertion hole and enter the insertion hole cavity, and after the insertion plate is turned by an angle, it is clamped in the insertion hole and cannot be pulled out.

[0059] One preferred solution of the insertion hole and the insertion plate is that they are similar in shape, for example, a smaller insertion plate and a larger insertion hole are similar triangles, or a smaller insertion plate and a larger insertion hole are similar ellipses, or a smaller insertion plate and a larger insertion hole are similar rectangles.

[0060] Preferably, the screw structure can be: including a screw post and a screw hole, the screw post is convexly provided on the outer side surface of the screw part, or convexly provided on the inner side surface of the cover knob; the screw hole is concavely provided on the inner side surface of the cover knob, or concavely provided on the outer side surface of the screw part, and the detachable connection of the cover knob and the fitting part or the screw part is achieved by the threaded structure matched by the screw post and the screw hole.

[0061] Preferably, the mounting hole on the cover body is non-circular in shape, matching the screw structure.

[0062] The screw structure is preferably a screw connection structure with a clamping anti-backout structure.

[0063] Preferably, the screw connection structure with a clamping anti-backout structure is:

[0064] The stud is protruded on the inner side end surface of the cover knob or the outer side end surface of the screw member on the cover body screw assembly, which is a cylindrical body with at least two radial cross columns uniformly distributed on the side peripheral surface. Correspondingly, the screw hole structure is: a vertical circular groove is provided on the outer side surface of the screw member on the cover body screw assembly or the inner side end surface of the cover knob, the center of the groove bottom surface is provided with a recess corresponding to the cylindrical body of the stud, and vertical lifting vertical grooves corresponding to the number and position of the cross columns on the stud are provided on the circular groove side wall, the vertical grooves are provided with a spiral groove in the circumferential direction, and at the end of the spiral groove, a curved groove segment opposite to the lifting direction of the spiral groove is smoothly transitioned and matched with the radial cross column.

[0065] Preferably, the end of the spiral groove has a curved groove segment opposite to the lifting direction of the spiral groove for clamping anti-backout.

[0066] When the cover knob and the cover body are combined, for example, the stud on the cover knob is inserted into the circular groove of the screw member on the cover body, the radial cross column is placed in the vertical groove, and the cover knob is rotated, which can be screwed with the screw body on the cover body. When the screw structure is screwed in place, the radial cross column is clamped in the curved groove segment, and in use, the screw structure will not loosen with a little touch of the cover knob. When the cover knob is to be removed from the cover body, the cover knob is rotated in the opposite direction, because the curved groove segment and the spiral groove are smoothly transitioned, the radial cross column can slide out of the curved groove segment into the spiral groove, and the cover knob can be removed from the cover body by rotating an angle.

[0067] The fixing structure between the embedding member or the screw member and the fixing member on the cover body can be:

[0068] One end of the fixing member has a fixing member flange connected to a fixing member cylinder, and the fixing member cylinder is provided with a clamping structure. The fixing member cylinder is inserted into the mounting hole of the cover body, and the fixing member flange is abutted against the inner side surface of the cover body.

[0069] The embedding member or the screw member is provided with a fixing part at the inner side end facing the cover body, which is matched with the clamping structure and inserted into the fixing member cylinder to be integrated with the fixing member cylinder of the fixing member through the clamping structure. A flange is provided on the outer side away from the cover body, and the cover body embedding structure is provided on the end surface of the flange, and the flange is abutted against the outer side surface of the cover body.

[0070] Specifically,

[0071] The fixing structure of the chimeric or spiral member and the fixing member can be:

[0072] The diameter of the fixing member cylinder in the fixing member is smaller than the diameter of the mounting hole on the cover body. The inner side of the fixing member cylinder is closed, and the outer edge of the closing plate on it is larger than the diameter of the mounting hole to form an annular flange to be clamped on the inner side of the cover body. A plurality of grooves are provided on the side wall of the fixing member cylinder, extending from the outer end surface of the fixing member cylinder to the closing plate and parallel to the axis of the fixing member cylinder, so that the side wall of the fixing member cylinder has a retractable elasticity.

[0073] The fixing part on the chimeric or spiral member has a cylinder with an outer diameter matching the inner diameter of the fixing member cylinder, so that when the cylinder is inserted into the fixing member cylinder, the fixing member cylinder is expanded. When the fixing member and the chimeric or spiral member are respectively inserted from the inner side and the outer side of the cover body through the mounting hole, the cylinder of the chimeric or spiral member is inserted into the fixing member cylinder and is fastened into an integral whole by the restoring force of the fixing member cylinder.

[0074] Preferably, in order to make the chimeric or spiral member and the fixing member more firmly combined, matching tooth-shaped structures are provided on the inner wall of the fixing member cylinder of the fixing member and the outer wall of the cylinder of the chimeric or spiral member, constituting an anti-loosening structure. The tooth-shaped structure is preferably provided on the entire contact surface of the fixing member cylinder and the cylinder of the chimeric or spiral member. An annular groove is provided on the end surface of the flange of the chimeric or spiral member facing the end surface of the fixing member cylinder to match the end surface of the fixing member cylinder. An annular groove can also be provided on the bottom surface of the fixing member cylinder of the fixing member, i.e. the closing plate, to match the end surface of the cylinder of the chimeric or spiral member. The annular groove serves to adjust the insertion depth of the cylinder of the chimeric or spiral member and the fixing member cylinder when the thickness of the cover body is different, so that the flanges of the chimeric or spiral member and the fixing member are tightly fitted with the two side surfaces of the cover body, thus enabling a cover body chimeric assembly or cover body spiral assembly of one size to adapt to cover bodies of different thicknesses.

[0075] Preferably, the cover body chimeric assembly or cover body spiral assembly further comprises a resilient sealing gasket provided between the fixing member and the inner surface of the cover body. The resilient gasket can be a rubber flat gasket. Preferably, the resilient sealing gasket comprises a gasket cylinder with a sealing gasket flange radially protruding outward from one end. The gasket cylinder of the sealing gasket is inserted into the mounting hole of the cover body outside the fixing member cylinder, and the sealing gasket flange is abutted against the inner side surface of the cover body, and the fixing member flange is abutted against the sealing gasket flange.

[0076] The fixing structure between the fitting member or the screw member and the fixing member on the cover body can also be that the fixing member is a screw, the fitting member or the screw member is a flange cylinder, a through hole is arranged on the flange and communicates with the cylinder, a screw thread is arranged on the inner wall of the through hole, a fitting structure or a screw structure is arranged on the outer end surface of the flange of the fitting member or the screw member, the fitting member or the screw member abuts against the outer side surface of the cover body, the fixing member, i.e. the screw, passes out of the inner side surface of the cover body through the mounting hole, and is screwed with the inner screw thread of the fitting member or the screw member to fix the fitting member or the screw member on the cover body.

[0077] Another object of the utility model is to provide the cover button assembly of the pot cover convenient to disassemble and assemble, which comprises a cover body fitting structure or a cover body screw structure and a cover button fitting structure or a cover button screw structure, the cover button fitting structure or the cover button screw structure is arranged on the cover button, and the cover body fitting structure or the cover body screw structure is matched with the cover button fitting structure or the screw structure to form a fitting structure or a screw structure.

[0078] The fitting structure is that

[0079] The cover body fitting structure is arranged on a cover body fitting assembly, the cover body fitting assembly comprises a fitting member and a fixing member, and the cover body fitting structure is arranged on the outer side surface of the fitting member.

[0080] The cover button fitting structure is arranged on the inner side end surface of the cover button, i.e. a cover button connecting end.

[0081] The cover body fitting structure comprises an outer side fixing member and an inner side fixing member.

[0082] The outer side fixing member is an end cover, a cover button mounting hole in a non-circular shape is arranged on the outer side fixing member, and an outer connecting pipe is arranged on the inner side of the outer side fixing member.

[0083] The inner side fixing member is a sealing cover, an inner connecting pipe is arranged on the outer side end surface of the inner side fixing member and matched with the outer connecting pipe on the outer side fixing member, so that the inner connecting pipe is inserted into the outer connecting pipe.

[0084] The outer side fixing member with the cover button mounting hole is fixed on the cover body through the inner side fixing member.

[0085] The cover knob fitting structure is an outwardly convex plug-in plate on the inner side, which is a column with a non-circular cross-section, forming a fitting section, the cross-section of the fitting section having a maximum length smaller than the maximum length of the cover knob mounting hole but larger than the minimum length of the cover knob mounting hole, so that the plug-in plate can pass through the cover knob mounting hole and be clamped on the cover body after turning through a set angle, and thus the cover knob is fixed on the cover body;

[0086] The bottom surface of the inner tube is recessed inwardly relative to the outer side surface of the cover body by a distance, and / or the bottom surface of the outer tube is recessed inwardly relative to the inner side surface of the cover body by a distance, or

[0087] The cover knob fitting structure comprises a pin shaft (D201), a connecting cover (D202), a knob piece (D203), a spring (D204) and a screw (D205), the end of the pin shaft (D201) is a shaft cap (D201a) serving as a plug-in plate, the shaft cap (D201a) has a connecting part (D201b), a shoulder (D201c) and a rectangular section (D201d) outwardly, an axial screw hole is arranged on the outer end surface of the pin shaft, the inner side of the connecting cover (D202) is a conical cover (D202a), the outer end surface is a partition plate (D202b), a through hole is arranged on the partition plate (D202b), a cylindrical body (D202c) is arranged outwardly of the partition plate, the knob piece (D203) is a conical body, the inner end surface is provided with a pit (D203a), the axial depth of the pit (D203a) is greater than the length of the cylindrical body of the connecting cover (D202), a rectangular blind hole (D203b) is arranged on the bottom surface of the pit, a screw hole (D203c) is arranged on the bottom surface of the blind hole, the pin shaft, the connecting cover and the knob piece are connected by the screw (D205), the shoulder (D201c) of the pin shaft (D201) abuts against the partition plate (D202b) of the connecting cover (D202), the rectangular section (D201d) is matchedly inserted into the blind hole (D203b) of the knob piece (D203), the cylindrical body of the connecting cover (D202) is inserted into the pit of the knob piece, one end of the spring (D204) abuts against the partition plate (D202b) of the connecting cover, and the other end abuts against the bottom surface of the pit of the knob piece (D203); or

[0088] The cover button fitting structure is a cover button assembly, which comprises a cover button piece (C1) and a lock needle (C2). The cover button piece comprises a cover button shell (C11), which is a cylinder. The outer end surface is closed by a rear end cover (C111), and the inner end surface is provided with a front end cover (C112). The center of the front end cover is provided with a through needle hole for inserting the lock needle. The end surface of the front end cover towards the outside of the cylinder is provided with a non-circular boss which matches the non-circular cover button mounting hole on the cover body. The end surface of the front end cover towards the inside of the cylinder is provided with a handle clamping groove (C112d), and a handle through hole is arranged on the side wall close to the rear end cover or the rear end cover. The lock and unlock structure of the lock needle is arranged in the cover button shell. One end of the unlock handle is clamped on the handle clamping groove, and the other end is exposed from the handle through hole. The lock needle has a lock needle cap and a needle rod. The shape of the lock needle cap is the same as the size and shape of the boss, and the lock needle cap is arranged on the inner side surface of the cover body at a certain angle. Alternatively, the lock needle cap is larger than the cover button mounting hole on the cover body, and the needle rod is inserted into the needle hole in the cover button shell and locked by the lock and unlock structure.

[0089] The spiral structure can also be:

[0090] The cover body spiral structure is arranged on a cover body spiral assembly, which comprises a spiral piece and a fixing piece. The cover body spiral structure is arranged on the outer side surface of the spiral piece.

[0091] The cover button spiral structure is arranged on the inner side end surface of the cover button, i.e. the cover button connecting end, and matches and combines with the cover body spiral structure. Alternatively,

[0092] The spiral structure can also be a cover button assembly comprising a screw (B2), a connecting piece (B3) and a cover button (B4). The screw cap (B2a) and the insertion part (B31) of the connecting piece (B3) inserted into the through hole (B11) of the cover body (B1) are both non-circular cross sections and have the same cross section. The rear of the insertion part (B31) is provided with an abutting part (B32) for abutting the connecting piece (B3) against the cover body (B1). The center of the connecting piece (B3) is provided with a screw hole (B33). The end surface of the cover button (B4) adjacent to the connecting piece (B3) matches the adjacent end surface of the connecting piece (B3). The center of the cover button (B4) is also provided with a screw hole (B41). The screw (B2) connects the connecting piece (B3) and the cover button (B4) into one body. The outer contour of the screw cap (B2a) is the same as the insertion part (B31), or larger than the outer contour of the insertion part (B31). Alternatively,

[0093] The spiral structure can also be a cover button assembly comprising a screw (B2) and a cover button (B4). The outer contour of the screw cap (B2a) of the screw (B2) is larger than the mounting hole (B11) of the cover body. The screw rod side surface of the screw cap is provided with a non-circular boss (B2b), and the cover button is provided with a screw hole (B41).

[0094] The fitting structure is a sliding fitting structure, or a rotating fitting structure; or,

[0095] The screw structure comprises a screw post and a screw hole, the screw post is protruded on the outer side of the screw or the inner side of the cover knob, the screw hole is recessed on the inner side of the cover knob or the outer side of the screw, the screw post and the screw hole are matched by the screw thread structure, so that the cover knob is detachably connected with the fitting member or the screw; and / or,

[0096] The mounting hole on the cover is non-circular in shape, matched with the screw structure; and / or,

[0097] The fitting member or the screw and the fixing member are provided with a fixing structure; or,

[0098] In the cover fitting structure, the non-circular cover knob mounting hole is a non-circular hole shaped like a dumbbell, and correspondingly,

[0099] In the cover fitting structure, the non-circular fitting segment on the protruding plug-in plate is a dumbbell-shaped non-cylinder with similar shape to the mounting hole; or,

[0100] In the cover fitting structure, the plug-in plate is inserted into the cover knob mounting hole, accommodated in the outer connecting pipe, and fixed on the outer side fixing member end cover by rotating to a set angle; and / or,

[0101] The inner connecting pipe is provided with a plurality of slots on the side wall, extending from the inner connecting pipe end surface to the length of the inner connecting pipe tube segment, so that the inner connecting pipe has radial elasticity, and can be expanded and fixed in the outer connecting pipe when inserted into the outer connecting pipe; and / or,

[0102] The cover knob mounting hole on the cover or the end cover of the outer side fixing member connected to the cover is provided with a recess or a through hole for clamping the cover knob, and correspondingly, the opposite side surface of the plug-in plate on the cover knob is provided with a protrusion at the corresponding position, so that when the plug-in plate is rotated to a set angle, the protrusion is clamped into the recess or the through hole; and / or,

[0103] The connecting hole on the cover is a round hole or a rectangular hole; and / or, in the cover knob embedded structure, the outer end of the outwardly convex insertion plate is provided with a connecting section extending axially, the outer contour of the connecting section is smaller than the cover knob mounting hole, the axial length d1 of the connecting section is equivalent to the axial length D1 of the cover knob mounting hole, a shoulder is connected to the outer end of the connecting section, or a shoulder is separately connected to the outer end of the connecting section, a cylinder and an annular groove are respectively arranged on the two end faces adjacent to the connecting section and the shoulder, the cylinder is inserted into the annular groove, and a spring is additionally arranged on the screw rod between the connecting section and the shoulder, and the spring is arranged in the cylinder;

[0104] The outer contour of the shoulder is larger than the maximum length of the cover knob mounting hole, so that when the insertion plate of the cover knob is inserted into the cover knob mounting hole, the shoulder abuts against the outer side of the cover or the outer side of the cover of the outer fixing member, and the outer side of the shoulder is the knob; or,

[0105] The locking and unlocking structure includes a conical sleeve cap (C12), a compression spring (C13), an inner conical cylinder (C14), locking steel balls (C15), an outer conical cylinder (C16), and an unlocking pull handle. The conical sleeve cap is a conical cylinder fixed to the inner side of the rear end cover of the cover knob shell, the large end of the inner conical cylinder is inserted into the large end of the conical sleeve cap and abuts against the conical inner wall of the conical sleeve cap, the compression spring is arranged between the conical sleeve cap and the inner conical cylinder, three locking steel balls are radially movably clamped in the radial perforations (C14a) on the conical side wall of the inner conical cylinder, a boss (C141) is arranged at the center of the front end cover of the inner conical cylinder, a pinhole (C141a) is arranged on the boss, the large end of the outer conical cylinder is inserted into the cover knob shell and combined and fixed with the large end of the conical sleeve cap, a cover plate (C161) is arranged on the small end of the front face of the outer conical cylinder, a perforation (161a) is arranged on the cover plate for the boss on the inner conical cylinder to pass through, and the conical side wall of the outer conical cylinder limits the part exposed to the outside of the inner conical cylinder. The unlocking pull handle is a rod body, the crossbar (C17a) at one end of the rod body is clamped into the handle clamping groove on the front end cover to limit the position, a crossbar pinhole is arranged on the crossbar, the inner conical cylinder is fixed to the crossbar or abuts against the front end cover of the cover knob shell and the boss (C141) through the compression spring, the crossbar is connected to one end of a connecting rod, the connecting rod is arranged in the cover knob shell and outside the outer conical cylinder and the sleeve cap, the other end of the connecting rod serves as a handle and passes out of the side wall of the cover knob shell, or the crossbar and the cover knob shell are hingedly connected at a pivot point, and the other end of the connecting rod is connected to a button (C18c) which passes out of the handle perforation of the rear end cover of the cover knob shell.

[0106] The cover body fitting structure arranged on the outer end surface of the fitting member in the cover body fitting assembly is an outward convex plug-in part or an inward recessed plug-in slot;

[0107] The cover knob fitting structure is a plug-in slot or plug-in part arranged on the inner end surface of the cover knob and matched with the plug-in part or plug-in slot on the fitting member; the detachable connection of the cover knob and the cover body is realized by plug-in of the plug-in part in the plug-in slot; or,

[0108] The rotating plug-in structure is:

[0109] The cover body fitting structure arranged on the outer end surface of the fitting member in the cover body fitting assembly is an outward convex plug-in plate which is non-circular in shape, or is a plug-in hole cavity arranged on the outer end surface of the fitting member, and the plug-in hole at the port of the plug-in hole cavity is non-circular in shape; correspondingly, the cover knob fitting structure is a plug-in hole cavity arranged on the end surface of the cover knob connecting end of the cover knob, and the plug-in hole cavity is provided with a non-circular plug-in hole, or is a convex non-circular plug-in plate arranged on the end surface of the cover knob connecting end of the cover knob;

[0110] The maximum length of the plug-in plate is smaller than the maximum length of the plug-in hole but larger than the minimum length of the plug-in hole, so that the plug-in plate can pass through the plug-in hole and enter the plug-in hole cavity, and after the plug-in plate is turned through an angle, it is clamped in the plug-in hole and cannot be pulled out; or,

[0111] The screw structure is a screw connection structure with clamping anti-backout structure; and / or,

[0112] The fixing structure between the fitting member or the screw member and the fixing member on the cover body fitting structure or the screw structure is:

[0113] One end of the fixing member has a fixing member flange connected to a fixing member cylinder provided with a clamping structure, the fixing member cylinder is inserted into the mounting hole of the cover body, the fixing member flange abuts against the inner side of the cover body, the fitting member or the screw member is provided with a fixing part matched with the clamping structure at the end of the inner side of the cover body, and the fitting member or the screw member is inserted into the fixing member cylinder and fixed as a whole through the clamping structure; or, the fixing structure between the fitting member or the screw member and the fixing member on the cover body fitting structure or the screw structure is that the fixing member is a screw, the fitting member or the screw member is a cylinder with a flange, a through hole is arranged on the flange and communicates with the cylinder, and a screw thread is arranged on the inner wall of the through hole, the flange outer end surface of the fitting member or the screw member is provided with a fitting structure or a screw structure, the fitting member or the screw member abuts against the outer side of the cover body, and the fixing member, i.e. the screw, is inserted into the mounting hole from the inner side of the cover body and screwed with the inner screw thread of the fitting member or the screw member to fix the fitting member or the screw member on the cover body; or, the fitting member or the screw member includes a cylinder with a flange, a through hole is arranged on the flange and communicates with the cylinder, and a hollow inner screw thread rod is inserted into the through hole, the fixing member is a screw, which is inserted into the hollow inner screw thread rod from the inner side of the cover body and screwed with the hollow inner screw thread rod, and the flange outer end surface of the fitting member or the screw member is provided with a cover body fitting structure or a cover body screw structure; or,

[0114] In the cover body fitting structure, the non-circular cover knob mounting hole in the shape of a dumbbell is a small circular hole with a smaller diameter as a positioning hole, and two larger-diameter fan-shaped holes with the same center are connected to the two sides of the center of the small circular hole, forming a non-circular hole in the shape of a dumbbell.

[0115] In the sliding insertion structure,

[0116] The insertion part is two parallel bending convex edges arranged on the corresponding end surface, and correspondingly, the insertion groove is a groove corresponding to the bending convex edges and arranged on the corresponding end surface; or,

[0117] The insertion part is a protruding block on the corresponding end surface, at least two opposite edges of which form outward convex edges and are parallel to each other, and correspondingly, the insertion groove is an insertion groove corresponding to the convex edges and arranged on the corresponding end surface, the opposite two side walls of which match the two parallel edges of the protruding block, and the port of at least one side of the insertion groove is arranged at the edge of the corresponding end surface to form an opening; or,

[0118] The screw connecting structure with the clamping anti-retreating structure is that the stud is protruded on the inner side end surface of the cover knob, which is a cylinder, and at least two radial cross columns are uniformly distributed on the side surface of the cylinder, and correspondingly, the screw hole structure is that a vertical circular groove is arranged on the outer side surface of the screw part on the cover body screw assembly or the inner side end surface of the cover knob, the center of the groove bottom surface of the circular groove is arranged with a recess corresponding to the cylinder of the stud, and a vertical lifting vertical groove corresponding to the number and position of the cross columns on the stud is arranged on the side wall of the circular groove, the vertical groove is provided with a downward bending spiral groove along the circumferential direction, and at the lowest part of the spiral groove, a curved groove segment opposite to the lifting direction of the spiral groove is smoothly and transitionally arranged to match the radial cross column to clamp and prevent retreat; and / or,

[0119] In the rotating insertion structure, the insertion hole and the insertion plate are similar shapes.

[0120] The similar shapes are similar triangular smaller insertion plates and larger insertion holes, or similar elliptical smaller insertion plates and larger insertion holes, or similar rectangular smaller insertion plates and larger insertion holes.

[0121] The fixing structure of the insertion part or the screw part and the fixing part is:

[0122] One end of the inner side of the fixing part cylinder in the fixing part is closed, the outer edge of the closing plate on it forms an annular stop edge to constitute the fixing part flange for clamping on the inner side surface of the cover body, and a plurality of slots are arranged on the side wall of the fixing part cylinder and extend from the end surface of the outer end of the fixing part cylinder to the closing plate direction and are parallel to the axis of the fixing part cylinder, so that the side wall of the fixing part cylinder has a contractile elasticity;

[0123] The insertion part or the screw part has a cylinder with an outer diameter matching the inner diameter of the fixing part cylinder, so that when the cylinder is inserted into the fixing part cylinder, the fixing part cylinder is expanded, and when the fixing part and the insertion part or the screw part are respectively inserted from the inner side and the outer side of the cover body and face each other through the mounting hole, the cylinder of the insertion part or the screw part is inserted into the fixing part cylinder and is fastened into an integral whole by the restoring force of the fixing part cylinder.

[0124] Matching tooth-shaped structures are arranged on the inner wall of the fixing part cylinder of the fixing part and the outer wall of the insertion part or the screw part cylinder to constitute an anti-loosening structure; and / or a circular groove is arranged on the end surface of the flange of the insertion part or the screw part facing the end surface of the fixing part cylinder to match the end surface of the fixing part cylinder; and / or,

[0125] An annular groove is arranged on the bottom surface of the fixing member cylinder of the fixing member, i.e. the closing plate, and matches the end surface of the cylinder of the embedded member or screw member, so that when the cover body of different thicknesses is matched, the end plate of the embedded member or screw member can be fixed to the outer side surface of the cover body; and / or,

[0126] The cover body embedded assembly or cover body screw assembly further comprises a resilient sealing gasket arranged between the fixing member and the inner surface of the cover body; or,

[0127] The cover body embedded assembly or cover body screw assembly further comprises a resilient sealing gasket, which comprises a gasket cylinder, one end of which is radially outwardly protruding a sealing gasket flange, the gasket cylinder of the sealing gasket is inserted into the mounting hole of the cover body outside the fixing member cylinder, the sealing gasket flange is abutted on the inner side surface of the cover body, and the fixing member flange on the fixing member is abutted on the sealing gasket flange.

[0128] Another cover knob assembly comprises a cover knob, which is fixed on a cover body through a cover body embedded structure and a cover knob embedded structure,

[0129] The cover body embedded structure comprises an inner side cover knob fixing member, which comprises a closing cover, an inner side connector is arranged on the outer side surface of the closing cover facing the cover body, the cover knob embedded structure is arranged on the inner side surface of the cover knob facing the cover body, an outer side connector is arranged on the other side surface of the cover knob, and a handle is arranged on the cover knob, the inner side connector is inserted into the mounting hole of the cover body, the outer side surface of the inner side connector of the closing cover is abutted on the inner side surface of the cover body, and the outer side connector of the cover knob is cooperatively inserted into the inner side connector.

[0130] A plurality of axial slots are arranged on the pipe wall of the inner side connector of the inner side cover knob fixing member from the outer end to the inner end, so that the pipe wall of the inner side connector has radial elasticity, and when the outer side connector of the cover knob is inserted into the inner side connector, the inner side connector is supported, so that the cover knob is more stably fixed; and / or,

[0131] The inner wall of the pipe of the inner side connector and the outer wall of the pipe of the outer side connector are provided with matching circumferential tooth grooves, so that they are more firmly fixed; and / or,

[0132] The mounting hole of the cover body is non-circular, and the shape of the inner side connector of the inner side cover knob fixing member and the outer side connector of the cover knob matched with the mounting hole of the cover body is matched with the shape of the mounting hole of the cover body.

[0133] The pot cover and the cover button assembly thereof which can be conveniently disassembled and assembled provided by the utility model change the structure that the cover button of the existing pot cover is inconveniently disassembled and assembled and is fixed on the cover body through screwing and other structures, the cover button is fixed through the detachable fitting structure, and then the use and storage mode of the traditional pot cover is changed, when being stored, the cover body and the cover button of the pot cover are separated through the structure which is conveniently disassembled and assembled, the cover bodies of various pot covers in the kitchen can be centrally stacked or inserted on the storage rack, when being used, the cover button can be quickly mounted on the cover body through the fitting structure, so as to adapt to the problem that the types of the pot covers in the kitchen are various, the pot bodies of many pot covers occupy a large space when being hung and stored, and the stacked cover bodies can be more stably stored.

[0134] The utility model will be described in detail below through the drawings and the embodiments. DRAWINGS

[0135] Figure 1 It is the pot cover structure schematic diagram in the prior art;

[0136] Figure 2 It is the exploded perspective structure schematic diagram of the pot cover of embodiment 1 provided by the utility model;

[0137] Figure 3 It is the section structure schematic diagram of the pot cover of embodiment 1 provided by the utility model under the use condition;

[0138] Figure 4 It is the A part local amplification structure schematic diagram of Figure 3 ;

[0139] Figure 5 It is the fitting assembly shown in and the exploded structure schematic diagram of Figure 4 ;

[0140] Figure 6 It is the section structure schematic diagram of the cover button of embodiment 1 and the cover body fitting assembly with the cover body separated;

[0141] Figure 7 It is the section structure schematic diagram of the cover button and the fitting piece of another sliding fitting structure in embodiment 2;

[0142] Figure 8 It is the section exploded structure schematic diagram of the rotating fitting structure formed by the cover body fitting structure and the cover button fitting structure in the pot cover of embodiment 3 provided by the utility model;

[0143] Figure 9 It is the right view structure schematic diagram of the cover button in Figure 8 ;

[0144] Figure 10 It is the left view structure schematic diagram of the fitting piece in Figure 8 ;

[0145] Figure 11 For Figure 8 top view structure schematic diagram of the middle chimeric piece;

[0146] Figure 12 For the structure schematic diagram of the side of the cover button in embodiment 4 of the utility model towards chimeric piece, namely the inner end face;

[0147] Figure 13 For the structure schematic diagram of the side of the chimeric piece in embodiment 4 of the utility model towards cover button, namely the outer end face;

[0148] Figure 14 For the structure schematic diagram of the cover body with cover body chimeric assembly in embodiment 5 of the utility model;

[0149] Figure 15 For Figure 14 The embodiment 5 of the utility model is a three-dimensional exploded structure schematic diagram;

[0150] Figure 16 For the structure schematic diagram of the cover button in embodiment 6 of the utility model;

[0151] Figure 17 For Figure 16 The structure schematic diagram of the spiral piece in the cover body spiral assembly in embodiment 6 shown;

[0152] Figure 18 For the structure schematic diagram of the cover button in another spiral structure in embodiment 7 of the utility model;

[0153] Figure 19 For Figure 18 The structure schematic diagram of the spiral piece in the cover body spiral assembly in embodiment 7 shown;

[0154] Figure 20 For Figure 18 And Figure 19 The three-dimensional exploded structure schematic diagram of embodiment 7 shown;

[0155] Figure 21 For the front view structure schematic diagram of the cover body in the pot cover of embodiment 7 of the utility model;

[0156] Figure 22 For Figure 21 The left view structure schematic diagram of the cover body shown;

[0157] Figure 23 For the front view structure schematic diagram of the cover button in the pot cover of embodiment 7;

[0158] Figure 24 For Figure 23 The left view structure schematic diagram of the cover button shown;

[0159] Figure 25 for Figure 23 rear view structure schematic diagram of the cover button;

[0160] Figure 26 to Figure 28 for the schematic diagram of the combination of the cover body and the cover button of example 7;

[0161] Figure 29 for the three-dimensional exploded structure schematic diagram of the pot cover of example 8 provided by the utility model;

[0162] Figure 30 for the sectional structure schematic diagram of the pot cover of example 8, showing that the cover button is inserted into position on the cover body and is clamped in two positions after being rotated to set an angle;

[0163] Figure 31 for the inside structure schematic diagram of the cover body embedding structure in the pot cover of example 8;

[0164] Figure 32 for the outside structure schematic diagram of the cover body embedding structure in the pot cover of example 8;

[0165] Figure 33 for the structure schematic diagram of the pot cover of example 9;

[0166] Figure 34 and Figure 35 respectively for the structure schematic diagram of the pot cover and the cover button combination part in example 10;

[0167] Figure 36 for the structure schematic diagram of the pot cover of example 7 which can adapt to the thickness change of the cover body;

[0168] Figure 37 for Figure 36 the structure schematic diagram of the cover button combination part in example 7;

[0169] Figure 38 for the structure schematic diagram of example 11;

[0170] Figure 39 to Figure 41 for the structure schematic diagram of the cover button shell in the cover button of example 11;

[0171] Figure 42 for the exploded structure schematic diagram of the internal locking and unlocking structure components in the cover button of example 11;

[0172] Figure 43 and Figure 44 respectively for the front view and left view structure schematic diagram of the fixing needle in example 11;

[0173] Figure 45 for the structure schematic diagram of the cover button combination part of another locking and unlocking structure;

[0174] Figure 46A schematic view of yet another spiral structure.

[0175] The utility model will be further described below by the drawings and examples. DETAILED DESCRIPTION

[0176] As Figure 2 to Figure 6 shown in the embodiment 1 of the pot cover provided by the utility model, which comprises a cover body 1 and a cover knob 2, and a cover body fitting structure and a cover knob fitting structure are respectively arranged on the cover body 1 and the cover knob 2 to form a fitting structure, so that the cover knob 2 is detachably fitted and fixed on the cover body 1 through the fitting structure.

[0177] In the description of various components of the utility model, the cover body 1 as the main body of the pot cover is taken as the reference, the outside of the pot cover is called the outside, and the inside of the pot cover is called the inside.

[0178] As Figure 2 shown, a circular mounting hole 11 is arranged on the cover body 1, a cover body fitting assembly 3 is mounted in the mounting hole 11, a cover knob fitting structure is arranged on the cover knob 2, and the cover body fitting structure is arranged on the cover body fitting assembly 3.

[0179] As Figure 2 to Figure 5 shown, the cover body fitting assembly 3 comprises a fitting piece 31 located on the outside of the cover body 1 and a fixing piece 32 and a rubber gasket 33 located on the inside of the cover body, the fitting piece 31 and the fixing piece 32 are fixed on the cover body 1 through the mounting hole 11 arranged on the cover body 1, and the cover body fitting structure is arranged on the outside surface of the fitting piece 31.

[0180] The fixing piece 32 comprises a fixing piece barrel 322, the diameter of the fixing piece barrel 322 is smaller than that of the mounting hole 11 on the cover body 1, one end of the inside of the fixing piece barrel 322 is closed, the outer edge of the closing plate on the fixing piece barrel 322 is larger than the hole diameter of the mounting hole to form an annular stop edge to form a fixing piece flange 321 for clamping on the inside surface of the cover body, and a plurality of slots 323 extending from the end surface of the outer end of the barrel to the closing plate and parallel to the axis of the barrel are arranged on the side wall of the fixing piece barrel 322, so that the side wall of the barrel has contractile elasticity (see Figure 2 ). In order to ensure the sealing between the fixing piece 32 and the mounting hole 11 of the cover body 1 and the protection and buffering of the cover body, a sealing gasket 33 is further arranged between the fixing piece 32 and the cover body 1, the sealing gasket can be a flat gasket, which is arranged between the flange 321 of the fixing piece 32 and the inside surface of the cover body 1. In the embodiment 1, the sealing gasket 33 is a rubber gasket with a sealing gasket flange 331 and a gasket barrel 332, during installation, the gasket barrel 332 of the sealing gasket 33 is inserted into the mounting hole 11, and the sealing gasket flange 331 is abutted against the edge of the mounting hole on the inside of the cover body. The fixing piece barrel 322 of the fixing piece 32 is inserted into the sealing gasket 33 and extends in the mounting hole 11, and the fixing piece flange 321 is attached to the flange 331 of the sealing gasket (see Figure 4). The fitting member 31 has a cylindrical body 311 with an outer diameter smaller than the inner diameter of the fixing member cylindrical body 322, so that it can be inserted into the fixing member cylindrical body, but can expand the fixing member cylindrical body 322. The outer side of the cylindrical body 311 is provided with a fitting member flange 312. When the fixing member 32 and the fitting member 31 are respectively inserted into the mounting hole 11 from the inner side and the outer side of the cover body 1, the fitting member 31 cylindrical body 311 is inserted into the fixing member cylindrical body 322. During the insertion process, the fixing member cylindrical body 322 can be expanded and easily inserted due to the provision of the slot 323. When it is inserted into place, it is contracted under the elastic action of the fixing member cylindrical body, so that the fitting member 31 and the fixing member 32 are integrated, and the cylindrical body 311 presses the fixing member cylindrical body 322 against the inner wall of the mounting hole 11 or the sealing gasket flange 331. After being inserted into place, the fitting member flange 312 of the fitting member 31 should be in close contact with the outer surface of the cover body 1.

[0181] Because the elastic sealing gasket 33 is placed between the fixing member cylindrical body 322 and the mounting hole 11, when the cylindrical body 311 of the fitting member 31 is inserted into the fixing member cylindrical body 322 with a slot 323 to expand it, the fixing member cylindrical body 322 presses the rubber gasket 33, which is beneficial to expansion. When the cylindrical body 311 of the fitting member is in place, the fixing member cylindrical body 322 restores its shape to fix the cylindrical body 311 of the fitting member, and the rubber gasket 33 can also play a role in reinforcing the clamping. Therefore, the sealing gasket 33 not only plays a role in buffering, but also plays a role in fixing the fitting member 31 and the fixing member 32 firmly.

[0182] In order to further improve the firmness of the fixing structure of the fitting member 31 and the fixing member 32, a tooth groove 311a is provided on the outer circumference of the cylindrical body 311 of the fitting member, and a matching tooth groove 322a is provided on the inner circumferential wall of the fixing member cylindrical body 322. The tooth grooves on the cylindrical body 311 and the fixing member cylindrical body 322 have the following shape: when they are combined, the tooth grooves can slide to combine them, and when they are fixed, the tooth grooves are clamped under the reverse force, so that the tooth grooves can prevent them from being loosened.

[0183] In order to make a set of cover body fitting assembly 3 suitable for installation on various thicknesses of pot cover body 1, in this embodiment 1, an annular groove 312b is provided on the end face of the fitting member flange 312 of the fitting member 31 facing the fixing member cylindrical body. When the fitting member flange 312 of the fitting member 31 is attached to the outer surface of the thinner cover body 1, and the fixing member flange 321 is attached to the sealing gasket flange 332 of the sealing gasket 33, the front end of the fixing member cylindrical body 322 that is too long is inserted into the annular groove 312b (as shown in Figure 4

[0184] ​From the above, the fixing structure between the fitting member 31 and the fixing member 32 is formed by the slot 323 on the fixing member 32 and the tooth groove 312a on the fitting member barrel 312 of the fitting member and the tooth groove 322a on the fixing member barrel 322, and the rubber washer 33 also contributes to the firm fixing of the fixing structure.

[0185] In the embodiment 1, the cover body 1 and the cover knob 2 are detachably connected through the fitting structure of the slidable fitting structure formed by the cover body fitting structure and the cover knob fitting structure therebetween.

[0186] The outer side end face of the fitting member flange 312 in the fitting member 31 in the cover body fitting assembly 3 faces the cover knob and is away from the cover body, and two opposite edges form the bent convex outer protrusions and are parallel to each other, and the bent opposite edges form the cover body fitting structure, i.e., the insertion part 312a; the cover knob fitting structure is two parallel insertion grooves 21 arranged on the inner side end face of the cover knob 2 connected to the cover body, and the insertion part 312a is inserted into the insertion groove 21 to achieve the detachable connection between the cover knob 2 and the cover body 1. The insertion groove can also be arranged on the fitting member 31, and the insertion part is correspondingly arranged on the cover knob 2.

[0187] [In use, when the pot cover is to be used, the cover knob fitting structure, i.e., the insertion groove 21 on the cover knob 2 is fitted with the cover body fitting structure, i.e., the insertion part 312a on the cover body 1, and is fixed on the cover body 1. The specific method is that the insertion part 312a of the fitting member 31 is upward, the insertion groove 21 of the cover knob 2 is downward, and then the insertion part 312a is transversely fitted and inserted into the insertion groove 21, and the connection between the cover knob 2 and the cover body 1 is completed; when the pot cover is finished, as long as the cover knob 2 is transversely pulled in the opposite direction to make the insertion groove 21 and the insertion part 312a disengage, the cover knob 2 and the cover body 1 can be separated, the pot body is hung up for storage, and the cover body 1 (see Figure 6 ) with the cover body fitting assembly 3 is stacked and stored with other several pot covers without cover knobs used in the kitchen, or each cover body can be stood up like a dish and stored on a storage rack, and the cover knob 2 (see Figure 6 ) can be separately stored in a drawer. One cover knob 2 can be combined with the pot covers of multiple pots. Since the cover body 1 does not have the cover knob 2, several cover bodies can be stably stacked, and the cover bodies can be closely spaced like dishes when stored on the storage rack, and the storage space is reduced.

[0188] As Figure 7The following is an example of embodiment 2, in which the cover and the cover button are also fitted together by a sliding insertion structure, but the fitting structure is different from that of embodiment 1. A dovetail-shaped insertion groove 21' is provided on the end face of the cover button 2 that connects to the cover. Correspondingly, the insertion part 312 on the fitting part 31 is replaced with an insertion block, on which a dovetail-shaped insertion part 312' is formed on the two opposite side edges to match the notch 21'. When fitting together, the dovetail-shaped insertion part 312' is inserted into the dovetail-shaped insertion groove 21'.

[0189] The fitting structure can also be a rotary fitting structure.

[0190] like Figure 8 to Figure 11 The figure shown is Embodiment 3 of this utility model. In Embodiment 3, the insertion portion 312” on the fitting 31 is the flange plate of the fitting, and its end face shape is rectangular (see Figure 10 and Figure 11 Correspondingly, a circular blind hole 22 is formed at the center of the inner end face of the cover button 2. The diameter of the blind hole 22 is larger than the diameter of the circumscribed circle of the rectangular insertion portion 312” on the fitting 31. A sealing plate 23 is fixed on the inner end face of the cover button 2 to close the blind hole. A through hole 23a is formed at the center of the sealing plate 23 to connect the blind hole 22. The through hole 23a is similar in shape to the rectangular insertion portion 312”. The long side of the through hole 23a is larger than the long side of the flange plate, and the short side of the through hole 23a is smaller than the long side of the flange plate but larger than the short side of the flange plate.

[0191] In use, when the knob 2 and the fitting 31 on the cover body 1 are joined, align the through hole 23a on the knob 2 with the insertion part 312” on the fitting 31 and insert it, then rotate the knob 2 90° to complete the connection. Removing the knob 2 is also simple; just rotate it another 90° so that the insertion part 312” is aligned with the through hole 23a, and the knob 2 can be removed from the fitting 31 to separate the knob from the cover body.

[0192] like Figure 12 and Figure 13As shown in Embodiment 4, it is another structure of the rotating insertion structure of the cover button and the cover body, wherein the insertion part 312"'on the cover button 31 is a triangular insertion plate 312" ', a circular blind hole 22' is arranged on the cover button 2, the diameter of the blind hole 22' is greater than the diameter of the circumscribed circle of the triangular insertion plate on the cover button 31, a cover plate 23' is fixed on the blind hole 22', a through hole 23a' is arranged on the cover plate 23', the through hole 23a' is similar to the triangular insertion plate 312" ', and the triangular insertion plate 312"'is aligned with the insertion hole 23a' on the cover plate 23' in use, and then is inserted into the insertion hole 22', and is rotated by an angle, so that the triangular insertion plate 312"'is deviated from the triangular insertion hole 23a', the insertion plate 312"'is clamped by the cover plate 23', and the cover button 2 is connected to the cover body 1. The cover button 2 can be removed from the cover body 1 in the reverse order.

[0193] As shown in Embodiment 4, it is another structure of the rotating insertion structure of the cover button and the cover body, wherein the insertion part 312"'on the cover button 31 is a triangular insertion plate 312" ', a circular blind hole 22' is arranged on the cover button 2, the diameter of the blind hole 22' is greater than the diameter of the circumscribed circle of the triangular insertion plate on the cover button 31, a cover plate 23' is fixed on the blind hole 22', a through hole 23a' is arranged on the cover plate 23', the through hole 23a' is similar to the triangular insertion plate 312" ', and the triangular insertion plate 312"'is aligned with the insertion hole 23a' on the cover plate 23' in use, and then is inserted into the insertion hole 22', and is rotated by an angle, so that the triangular insertion plate 312"'is deviated from the triangular insertion hole 23a', the insertion plate 312"'is clamped by the cover plate 23', and the cover button 2 is connected to the cover body 1. The cover button 2 can be removed from the cover body 1 in the reverse order. Figure 14 Figure 15 As shown in Embodiment 5, the mounting hole 11 on the cover body 1 is a small hole, and the cover body 1 can be a cover body in the prior art. In the cover body, the fixing structure between the cover button 31X and the fixing part 32X on the cover body is that the cover button 31X includes a cylinder with a flange, a through hole 31Z is arranged on the flange and communicates with the cylinder, the cover button 31X is arranged on the mounting hole 11 on the outer side surface of the cover body 1, and a hollow internal threaded rod 31Y is inserted into the through hole 31Z and the cylinder, the fixing part 32X is a screw, the screw is inserted into the hollow internal threaded rod 31Y from the inner side surface of the cover body 1 and is screwed and fixed, and the flange outer end surface of the cover button 31X is provided with a cover body insertion structure, which is basically the same as the cover body insertion structure in Embodiment 1 or Embodiment 2.

[0194] The embodiment 5 can also have a variant (not shown in the figure), that is, the fixing part is still a screw, the cover button is a cylinder with a flange, a through hole is arranged on the flange and communicates with the cylinder, an internal thread is arranged on the inner wall of the through hole, the flange outer end surface of the cover button is provided with an insertion structure, the cover button is arranged on the mounting hole 11 on the outer side surface of the cover body 1, and the screw is screwed with the internal thread of the cover button from the inner side surface of the cover body to fix the cover button on the cover body 1.

[0195] Figure 16 to Figure 20 ​The difference between this embodiment 6 and the previous embodiments is that the detachable combination structure of the fitting parts in the cover knob and cover fitting assembly is a screw structure. That is, the cover knob screw structure is arranged on the outer side of the cover knob, and the cover screw structure is arranged on the inner side of the cover knob. To adapt to the screw structure, the mounting hole 11' on the cover 1 is a rectangular hole, and the connection structure of the screw part 31' and the fixing part 32' is basically the same as that in embodiment 1. The difference is that the section shape of the fixing part cylinder 322' of the fixing part 32', the gasket cylinder 332' in the rubber gasket 33', and the cylinder 311' of the screw part 31' which is inserted into the fixing part 32' are rectangular, the slots 323' on the fixing part cylinder 322' are arranged on the four corners of the rectangular cylinder, and the tooth grooves 311a' and 322a' on the fixing part cylinder 322' and the cylinder 311' of the screw part are arranged on the four sides from top to bottom. Figure 20

[0196] The screw structure between the cover knob 2 and the screw part 31' can be a common thread connection, but it is preferably a screw connection structure with a clamping anti-backout structure as shown in embodiment 5.

[0197] In this embodiment 6, the screw connection structure with a clamping anti-backout structure is as follows: Figure 16 and Figure 17 On the cover knob 2', a stud 24' is protrudingly arranged on the inner side end surface of the cover knob 2, which is a cylindrical body with at least two radial cross columns 241' uniformly distributed on the side peripheral surface. Correspondingly, the screw hole structure of the screw part 31' is that a vertical circular groove 312a' is arranged on the outer side surface of the flange plate 312' of the screw part 31' on the cover screw assembly, the center of the groove bottom surface of the circular groove 312a' is provided with a recess 312b' corresponding to the cylindrical body of the stud 24', and the vertical slots 312c' corresponding in number and position to the cross columns 241' on the stud 24' are arranged on the side wall of the circular groove 312a' in the vertical direction. From the vertical slots 312c', the helical grooves 312d' are arranged in the circumferential direction and downwardly bent, and at the lowest part of the helical grooves 312d', the upper convex segments 312e' are smoothly transitionally arranged to match the radial cross columns 241'.

[0198] ​In use, the stud 24' of the knob 2' is inserted into the circular groove 312a' with the stud 24' aligned with the recess 312b', the cross-bar 241' falls into the vertical slot 312c', the knob 2' is turned, the cross-bar 241' moves into the helical groove 312d', and when the cross-bar 24' reaches the upper convex section 312e', the knob is screwed into place, and the cross-bar is limited by the upper convex section 312e' so that it is not easy to turn back. When the pot cover is used, the knob is not easy to loosen and come off the helical member. When the knob is to be separated from the cover, the knob is turned in the opposite direction, because the upper convex section 312e' and the helical groove are smoothly connected, the cross-bar 241' is easily separated from the upper convex section 312e' and enters the helical groove 312d', so that the knob can be separated from the helical member.

[0199] As shown in Figure 18 and Figure 19 and Figure 20 , a better helical structure is provided, a stud 31-1 is provided on the helical member 31', a cross-bar 31-2 is provided on the stud 31-1, a circular groove 2-1 is provided on the inner side end surface of the knob 2", the circular groove 2-1 is matched with the stud 31-1, a recess 2-2 is provided at the center of the groove bottom surface of the circular groove 2-1, and the recess 2-2 corresponds to the upper cylindrical body of the cross-bar 31-2 of the stud 31-1, two vertical slots 2-3 are provided on the inner side end surface of the knob and are matched with the two radial cross-bars and are communicated with the circular groove, and an upwardly curved helical groove 2-4 is provided on the side wall of the circular groove and is communicated with the vertical slot 2-2, and the helical groove 2-4 has a curved groove 2-5 at the end of the helical groove 2-4 for clamping and preventing the knob from being separated.

[0200] In use, the two vertical slots 2-3 on the knob are aligned with the two cross-bars 31-2 on the helical member 31', and the knob is inserted along the double-dot-dashed line a in the enlarged view of Figure 18 , and then the knob is rotated, the cross-bar 31-2 moves in the helical groove 2-4 so that the knob 2 moves towards the cover 1 until the cross-bar 31-2 is embedded in the curved groove 2-5, that is, the knob is installed on the cover. When the knob 2 is removed, the knob 2 is rotated in the opposite direction, and because the curved groove 2-5 and the helical groove 2-4 are smoothly connected, the cross-bar 31-2 is easily separated from the curved groove and enters the helical groove, so that the knob is separated from the cover by rotating the knob in the opposite direction.

[0201] Figure 16 and Figure 17 and Figure 18 to Figure 20 The two examples are different in that one of the stud and the helical groove is provided on the knob and the other is provided on the cover, and the functions are the same in use, but the helical groove is provided on the knob, the structure of the cover is simple, the cover with simple structure is convenient to store, and the knob with the helical groove has small volume and can be stored in a closed storage box, and the structure of the helical groove is not easy to be damaged; Figure 18 to Figure 20The embodiment of the present application has another advantage that the screw post and cross post structure is arranged on the screw member 31' fixed on the cover body, and if oil stains are on the screw post, the oil stains can be easily cleaned, but if the screw hole structure is arranged on the cover body, because the cover body is large, it is inconvenient to clean the oil stains in the screw hole on the cover body; and if the screw hole structure is arranged on the cover knob, because the cover knob is small, it is more convenient to clean the oil stains or even the oil sludge in the screw hole structure on the cover knob.

[0202] In the embodiment 6, the fixed connection structure of the screw member 31' and the fixing member 32' can adopt the bolt and hollow internal thread rod connecting structure as shown in Figure 20 , or the screw connecting structure that the bolt directly connects the screw member with the internal thread hole. Figure 15

[0203] As shown in Figure 21 to Figure 28 , another embodiment of the pot cover of the present application is provided, i.e. the embodiment 7.

[0204] In the embodiment 7, the pot cover only has the cover body 1 and the cover knob 2, and the cover body embedding structure is the cover knob mounting hole 101 on the cover body 1.

[0205] The cover knob embedding structure on the cover knob 2 is an outward protruding insertion plate 201 (see Figure 24 ) on the inner side of the cover knob 2 facing the cover body 1. Figure 26 to Figure 28 The insertion plate 201 is a column body with a non-circular cross section, forms an embedding and inserting section, the maximum length of the cross section of the embedding and inserting section is smaller than the maximum length of the cover knob mounting hole 101 but larger than the minimum length of the cover knob mounting hole 101, so that the insertion plate 201 can pass through the cover knob mounting hole 101, and after the insertion plate is driven by the cover knob 2 to rotate through a set angle, the insertion plate is axially clamped on the cover body 1 and cannot be pulled out, so that the cover knob 2 is fixed on the cover body 1 (as shown in

[0206] As shown in Figure 21 , a specific shape of the cover knob mounting hole 101 is given, and the non-circular cover knob mounting hole 101 is a non-circular hole shaped like a dumbbell, a small circular hole with a small diameter d as a positioning hole is arranged in the middle, and two fan-shaped holes with a large diameter D and the same center as the positioning hole are arranged on the two sides of the center of the positioning hole, forming a non-circular hole shaped like a dumbbell. The dumbbell-shaped cover knob mounting hole has a better positioning effect than a rectangular hole or a non-circular hole.

[0207] As shown in Figure 23 to Figure 25 , correspondingly, in the cover knob embedding structure, the non-circular embedding and inserting section on the insertion plate 201 outward protruding from the inner side of the cover knob 2 is a dumbbell-shaped non-cylindrical body with a similar shape to the cover knob mounting hole. ​

[0208] In the cover knob fitting structure, the outer end of the outwardly convex plug plate 201 is provided with a connecting section 202, the outer contour of the connecting section 202 is smaller than that of the cover knob mounting hole 101 on the cover body 1, and the axial length d1 of the connecting section 202 is equivalent to the axial length D1 of the cover knob mounting hole 101 on the cover body 1. A shoulder 203 is connected to the outer end of the connecting section 202, the outer contour of the shoulder 203 is larger than that of the cover knob mounting hole 101 on the cover body 1, so that when the plug plate 201 of the cover knob 2 is inserted into the cover knob mounting hole 101 on the cover body 1, the shoulder 203 abuts against the outer side surface of the cover body 1 as shown in Figure 28 The outer surface of the shoulder is a knob 204.

[0209] Example 7 gives a simpler structure than the previous examples, in which the plug plate 201 of the cover knob 2 is directly fixed on the mounting hole, i.e. the cover knob mounting hole 101, on the cover body 1. The plug plate on the cover knob 2 can be made of plastic material or made of metal material with a silicone layer attached to the outer surface. In order to make the position of the cover knob after rotation more stable on the cover body, a matching protrusion 205 and a recess or through hole 102 can be respectively arranged on the opposite sides of the plug plate 201 of the cover knob and the peripheral edge of the cover body 1, and when the cover knob is rotated to the position, the protrusion 204 is positioned in the recess or through hole; when the cover knob is to be removed from the cover body, the elasticity of the material of the cover knob itself can conveniently make the protrusion come out of the recess or through hole.

[0210] In order to make the cover knob 2 adapt to the thickness D1 of various cover bodies 1, an improvement is made to the cover knob: Figure 24 The cover knob is divided into two sections from the shoulder 203 and the connecting section 202 (see Figure 36 and Figure 37), which includes a pin shaft D201, a connecting cover D202, a cover knob D203, a spring D204 and a screw D205, the end of the pin shaft D201 is a shaft cap D201a which plays the role of the plug-in board, the shaft cap D201a is outwardly provided with a connecting part D201b, a shoulder D201c and a rectangular section D201d in sequence, an axial screw hole D201e is arranged on the outer end surface of the pin shaft, the inner side of the connecting cover D202 is a conical cover D202a, the outer end surface is a partition D202b, a through hole D202d is arranged on the partition D202b, a cylindrical body D202c is arranged outwardly of the partition, the cover knob D203 is a conical body, the inner side end surface is provided with a pit D203a, the axial depth of the pit D203a is greater than the length of the cylindrical body on the connecting cover, a rectangular blind hole D203b is arranged on the bottom surface of the pit, a screw hole D203c is arranged on the bottom surface of the blind hole, the pin shaft, the connecting cover and the cover knob are connected through the screw D205, the shoulder D201c of the pin shaft D201 is abutted on the partition D202b of the connecting cover D202, the rectangular section D201d is matchedly inserted into the blind hole D203b of the cover knob D203, the cylindrical body on the connecting cover D202 is inserted into the pit of the cover knob, one end of the spring D204 is abutted on the partition D202b of the connecting cover, and the other end is abutted on the bottom surface of the pit of the cover knob D203. In use, the integrated cover knob is inserted from the outside of the cover body D1 through the cover knob mounting hole D11 matched with the shaft cap D201a on the pin shaft, and the inner side end surface of the conical cover D202a of the connecting cover D202 is abutted on the outer side surface of the cover body. At this time, rotating the cover knob can make the shaft cap be clamped on the inner side surface of the cover body, that is, the cover knob is mounted. Such a cover knob can have axial movement as shown by the arrow due to the expansion and contraction between the connecting cover and the cover knob and the spring, so as to change the distance between the shaft cap D201a of the pin shaft D201 and the connecting cover D202a. Therefore, the thickness change of the cover body placed in the interval can also make the connecting cover well abut against the outer side surface of the cover body, so that such a cover knob can adapt to various cover body thicknesses D1 within a certain range. Figure 37

[0211] Now many pot covers are made of transparent glass, and it is not very convenient to process a dumbbell-shaped non-circular hole on the glass cover body. The following embodiment 8 is improved for this purpose:

[0212] As shown in the cover body fitting structure, the cover body 1A, the outer side fixing part 2B and the inner side fixing part 3C are included. Figure 29 to Figure 32

[0213] The connecting through hole 101A is a rectangular hole arranged on the cover body 1A, and the cover body has an outer surface 102A and an inner surface 103A.

[0214] ​​The outer fixing member 2B is an end cap arranged outside the cover body 1. A dumbbell-shaped non-circular cover knob mounting hole 201B is arranged on the outer fixing member 2B. An outer connecting pipe 202B is arranged inside the outer fixing member 2B and is matched with the connecting through hole 101A on the cover body 1A. The inner end 203B of the outer connecting pipe 202B is flush with the inner surface 103A of the cover body 1A. Meanwhile, the end edge 204B of the end cap 2B outside the outer connecting pipe 202B is attached to the outer surface 102A of the cover body 1A.

[0215] The inner fixing member 3C is a sealing cap arranged inside the cover body 1A. An inner connecting pipe 301C is arranged on the outer end surface of the inner fixing member 3C and is matched with the outer connecting pipe 202B on the outer fixing member 2B. The outer connecting pipe 202B is inserted into the inner connecting pipe 301C. Meanwhile, the peripheral edge 302C of the sealing cap on the inner fixing member 3C is attached to the inner surface of the cover body 1A. A plurality of grooves a extending from the end surface of the inner connecting pipe 301C along the length of the inner connecting pipe are arranged on the side wall of the inner connecting pipe 301C. The inner connecting pipe 301C has radial elasticity. When the outer connecting pipe 202B is inserted into the inner connecting pipe 301C, the inner connecting pipe can be expanded to be fixed between the connecting through hole 101A of the cover body 1 and the outer connecting pipe 202B. The inner wall of the inner connecting pipe 301C and the outer wall of the outer connecting pipe 202B are arranged with matching tooth grooves b. The outer fixing member 2B and the inner fixing member 3C are more firmly fixed in the connecting through hole 101A of the cover body 1A. The cover body fitting structure of the combination of the cover body 1A, the outer fixing member 2B and the inner fixing member 3C is shown in Figure 31 and Figure 32 .

[0216] Through the above structure, the connecting through hole 101A on the cover body 1A can be a round hole, but preferably a rectangular hole, instead of a dumbbell-shaped cover knob mounting hole matched with the shape of the insertion plate on the cover knob 2.

[0217] In order to enable the end edges of the inner fixing member 3C and the outer fixing member 2B to be well attached to the cover body 1, the bottom surface of the inner connecting pipe 301C is recessed inward by a distance relative to the outer surface of the cover body 1A, and / or the bottom surface of the outer connecting pipe 202B is recessed inward by a distance c relative to the inner surface of the cover body 1A (see Figure 30 ).

[0218] In the cover knob fitting structure provided in the eighth embodiment, the insertion plate 201 on the cover knob 2 is inserted into the cover knob mounting hole 201B on the end cap of the outer fixing member 2B, is accommodated in the inner connecting pipe 301C and is arranged in the connecting through hole 101A of the cover body 1A. The cover knob 2 can be fixed on the cover body 1A after the insertion plate 201 is rotated by a set angle (as shown in Figure 30 ).

[0219] In this embodiment 8, the connecting hole 101A on the cover 1A can be a round hole, but preferably a non-round hole, for example, it can be a rectangular hole as in this embodiment, or it can be a polygonal hole. The connecting hole 101 matches the cross-sectional shape of the matching outer connecting pipe 202B and the inner connecting pipe 301C, and so on. Such a connecting hole is easier to process than a dumbbell-shaped cover knob mounting hole, and the dumbbell-shaped cover knob mounting hole 103B that provides better positioning effect for the cover knob is transferred to the end cover 2B of the outer fixing member.

[0220] In order to make the position of the cover knob after rotation more stable on the cover, as shown in Figure 29 , a matched protrusion 205 and a recess or through hole 205B can be respectively arranged on the opposite side of the plug-in plate 201 of the cover knob and the peripheral edge of the outer fixing member 2B on the cover 1A. When the cover knob is rotated in place, the protrusion 205 is positioned in the recess or through hole; when the cover knob is to be removed from the cover, the protrusion can be easily removed from the recess or through hole by the elasticity of the material of the cover knob itself.

[0221] As shown in Figure 33 , the utility model also provides a ninth embodiment of a pot cover, which comprises a cover A1, an inner cover knob fixing member A2 and a cover knob A3. The cover A1 is provided with a mounting hole A11. The inner cover knob fixing member A2 comprises a closed cover A21. An inner connecting pipe A22 is arranged on the outer side of the closed cover A21 facing the cover. An outer connecting pipe A31 is arranged on the inner side of the cover knob A3 facing the cover. A handle A32 is arranged on the other side of the cover knob. The inner connecting pipe A22 is inserted into the mounting hole A11 of the cover. The peripheral edge A222 outside the inner connecting pipe A22 on the outer side of the closed cover A21 is attached to the inner side of the cover A1. The outer connecting pipe A31 on the inner side of the cover knob A3 is inserted into the inner connecting pipe A22. The peripheral edge A311 outside the outer connecting pipe A31 on the inner side of the cover knob A3 is attached to the outer side of the cover. Thus, the inner cover knob fixing member A2 fixes the cover knob A3 on the cover A1.

[0222] The pipe wall of the inner connecting pipe on the inner cover knob fixing member A2 is provided with a plurality of slots (not shown in the figure, which are basically the same as the slot a structure in the previous embodiment 8) from the outer end to the inner end in the axial direction, so that the pipe wall of the inner connecting pipe has elasticity in the radial direction. When the outer connecting pipe of the cover knob is inserted into the inner connecting pipe, the inner connecting pipe is lifted, so that the cover knob is more stably fixed.

[0223] Further, the inner pipe A22 of the inner lid knob fixing member and the outer pipe A31 of the outer lid knob can be provided with matching circumferential teeth grooves A0 to make the two more firmly fixed. The mounting hole A11 of the cover is non-circular, for example, rectangular or polygonal, and the inner pipe A22 of the inner lid knob fixing member and the outer pipe A31 of the outer lid knob of the matching lid knob fitting member are matched with the shape of the mounting hole A11 of the cover.

[0224] The lid knob fixing member of the embodiment 9 can be made of elastic material.

[0225] As Figure 34 The embodiment 10 of the lid provided by the utility model is shown, which comprises a cover B1 and a lid knob assembly comprising a screw B2, a connecting member B3 and a lid knob B4. An inner hole B11 of the cover B1 is non-circular, which is an oval hole in the embodiment 10. The screw cap B2a of the screw B2 and the inserting part B31 of the connecting member B3 inserted into the inner hole B11 of the cover B1 are both oval in cross section, which are matched with the inner hole B11 of the cover B1 to be able to pass through the inner hole B11. The rear of the inserting part B31 is provided with an abutting part B32 with a circular cross section with a diameter larger than the long axis of the inner hole B11 of the cover, which is used to abut the connecting member B3 against the cover B1. The connecting member B3 is provided with a screw hole B33 in the center. The end face of the lid knob B4 adjacent to the connecting member B3 is matched with the adjacent end face of the connecting member B3. The center of the lid knob B4 is also provided with a screw hole B41. The screw B2 connects the connecting member B3 and the lid knob B4 into one body. In use, the screw B2 is screwed through the screw hole B31 of the connecting member B3 and the screw hole B41 of the lid knob. At this time, the two oval end faces of the screw cap B2a and the connecting member B3 are arranged in alignment (see FIG. 6). Figure 35The cap knob assembly is fixed on the cover B1 by the following steps: the cap knob assembly is put on the outside of the cover B1, the screw cap B2a is passed through the perforation B11 from the outside of the cover B1, the inserting part B31 of the connecting piece B3 is located in the perforation B11 of the cover B1, the abutting part B32 behind the connecting piece B3 abuts against the outside surface of the cover B1, then the screw cap B2a is turned by 90° and is perpendicular to the inserting part B3a of the connecting piece B3, and thus the cap knob assembly is fixed on the cover B1. When the cap knob is removed, the screw cap B2a is only needed to be turned by 90° and is aligned with the inserting part B31 of the connecting piece B3, and thus the cap knob assembly can be pulled out from the perforation B11. In order to make the screw cap stable when the cap knob B4 is turned, a clamping structure is arranged on the adjacent end surfaces of the screw cap B2a and the connecting piece B3, for example, a non-circular, for example, rectangular boss B2b is arranged on the screw cap, and a matching rectangular pit or groove B3a is arranged on the inserting part B31 of the connecting piece B3. When the cap knob assembly is disassembled, the cap knob B4 is first turned, the depth of the boss and the groove can be very shallow, and only one turn or less of the cap knob is needed, so that the boss B2b of the screw cap B2a is out of the pit, and then the screw cap B2a is aligned with the inserting part B31 of the connecting piece B3, and thus the cap knob assembly can be disassembled from the perforation B11.

[0226] In the above embodiment 10, there is another variation, that is, the outer contour of the screw cap B2a of the screw B2 is larger than the inserting part B31, and when the cap knob assembly is installed, the screw B2 is passed through the oval perforation B11 from the inside surface of the cover B1 and is screwed and fixed with the connecting piece B3 and the cap knob B4.

[0227] In another variation (see Figure 46 ), the screw structure is as follows:

[0228] The screw B2 and the cap knob B4 are included, and the connecting piece B3 is cancelled, the outer contour of the screw cap B2a of the screw B2 is larger than the mounting hole B11 of the cover, a non-circular boss B2b, here a rectangular boss, is arranged on one side surface of the screw rod of the screw cap, the mounting hole B11 of the cover is matched with the boss B2b, and a screw hole B41 is arranged on the inside end surface of the cap knob B4 and is abutted against the outside surface of the cover B1. When the cap knob assembly is installed, the screw B2 is passed through the mounting hole from the inside of the cover and is screwed with the cap knob B4, and the boss B2b is arranged in the mounting hole. When the cap knob is disassembled, only the cap knob B4 needs to be turned by one hand, and a screwdriver is not needed to press against the screw to turn off the cap knob, unlike the existing pot cover. As the boss arranged in the mounting hole of the cover, the boss can also be arranged on the inside end surface of the cap knob B4.

[0229] As Figure 38 The eleventh embodiment of the utility model is given, which is a cap knob assembly and includes a cap knob piece C1 and a locking pin C2.

[0230] The cap knob piece C1 is as Figure 39 to Figure 41As shown, it comprises a cap shell C11, which is a cylinder, the outer end face is closed by a rear end cover C111, the inner end face is provided with a front end cover C112, the center of the front end cover C112 is provided with a through needle hole C112a for the insertion of the locking pin C2, the outer end face of the front end cover C112 is provided with a non-circular boss, which is an oval boss C112b in this embodiment 11 and matches the non-circular cap button mounting hole on the cap body, a groove C112c extending in the short axis direction is arranged on the end face of the boss C112b, and a handle clamping groove C112d is arranged on the other end face of the front end cover C112 (see Figure 40 ), and a handle through hole C113a is arranged on the side wall C113 close to the rear end cover C111.

[0231] The locking and unlocking structure of the locking pin is arranged in the cap shell C11; the locking and unlocking structure comprises a conical sleeve cap C12, a compression spring C13, an inner conical cylinder C14, a locking steel ball C15, an outer conical cylinder C16 and an unlocking handle C17 (see Figure 42 ).

[0232] The conical sleeve cap C12 is a conical cylinder, the small end is fixed on the inner side of the rear end cover C111 of the cap shell C11, the large end of the inner conical cylinder C14 is inserted into the large end of the conical sleeve cap C12 and is pressed against the conical inner wall of the conical sleeve cap, the compression spring C13 is arranged between the conical sleeve cap C12 and the inner conical cylinder C14, the three locking steel balls C15 are clamped on the through hole C14a on the conical side wall of the inner conical cylinder C14 and can move radially, the boss C141 is arranged at the center of the front end of the inner conical cylinder C14, the boss is provided with a needle hole C141a, the large end of the outer conical cylinder C16 is inserted into the cap shell C11 and is combined and fixed with the large end of the conical sleeve cap C12, the front small end is provided with a cover plate C161, and the through hole 161a is arranged on the cover plate C161 for the boss C141 on the inner conical cylinder C14 to pass through, the conical side wall of the outer conical cylinder C16 limits the part of the locking steel ball C15 exposed outside the inner conical cylinder C14; the unlocking handle C17 is a rod body, the cross rod C17a at one end is clamped in the handle clamping groove C112d on the front end cover C112 and is limited, the cross rod C17a is provided with a cross rod needle hole C17a1, the cross rod C17a is fixedly connected with the boss C141 of the inner conical cylinder C14, or the cross rod C17a can be pressed between the front end cover C112 of the cap shell and the boss C141 of the inner conical cylinder C14 through the compression spring C13, the cross rod C17a is connected with one end of a connecting rod C17b, the connecting rod C17a is arranged in the cap shell C11 and outside the outer conical cylinder C16 and the sleeve cap C12, the other end of the connecting rod is connected with a bent section as a handle C17c which passes through the handle through hole C113a on the side wall of the cap shell C11, pulling the handle C17c can drive the inner conical cylinder C14 to move in the axial direction, and the spring C13 is arranged on the inner side of the rear end cover C111 of the cap shell C11.

[0233] The fixed needle C2 comprises a needle cap C21 and a needle rod C22 (see Figure 43 and Figure 44 A rectangular protrusion C21a is protruded on the side of the needle rod of the needle cap, which matches the groove C112c on the end surface of the protrusion C112b on the cover knob shell 1C112.

[0234] The fixed needle C2 is inserted between the three locking steel balls C15 through the needle hole of the front end cover C112 of the cover knob shell C11 and the protrusion on the inner conical cylinder C14, and the steel balls are clamped and fixed by the conical side wall of the outer conical cylinder under the elastic force of the compression spring C13, so that the fixed needle C2 is integrated with the cover knob C1. The cross section of the needle cap of the fixed needle C2 is larger than the mounting hole on the cover body, and the shape of the oval protrusion C112b matches the mounting hole on the cover body.

[0235] In use, the cover knob C1 in the cover knob assembly is inserted into the mounting hole on the cover body from the outside, and the oval protrusion C112b is placed in the perforation of the cover body, and then the fixed needle C2 is inserted into the cover knob C1 from the inside of the cover body and is placed between the three locking steel balls C15, and is axially locked under the action of the compression spring and the outer conical cylinder C16, that is, the cover knob assembly is fixed on the cover body. When the cover knob assembly is to be removed, only the handle C17c needs to be pulled to move the inner conical cylinder C14 against the spring force to the spring side. Since the conical side wall of the outer conical cylinder gradually expands in the direction of the compression spring, the three locking steel balls can be moved radially outward, the fixed needle can be pulled out, and the cover knob assembly can be removed.

[0236] Figure 45 Another structure of the unlocking steel ball is given. The unlocking pull handle C18 is a rod body, one end of the horizontal rod C18a of one end of the rod body is embedded in the handle clamping groove C112d on the front end cover C112 for limiting and is fixed with the outer conical cylinder C16 or is pressed against the front end cover of the cover knob shell C11 by the spring C13, the horizontal rod needle hole C18a1 is arranged on the horizontal rod C18a, the other end of the horizontal rod C18a is hinged with a connecting rod C18b through a hinge C18a3, the other end of the connecting rod extends to the rear end cover of the cover knob shell and is exposed, and a button C18c is connected. A rotating fulcrum C18a2 is arranged in the middle of the horizontal rod C18a and is fixed with the cover knob shell C11. When the locking steel ball is to be unlocked, only the button C18c needs to be pressed to move the inner conical cylinder C14 through the connecting rod.

[0237] The embodiments in the utility model are only regarded as exemplary examples, and the true scope and spirit of the application are indicated by the claims. It should be understood that the application is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the application is only limited by the appended claims.

Claims

1. A pot cover with a cover knob which can be easily disassembled, comprising a cover body and a cover knob, characterized in that: The cover body and the knob are respectively provided with matched cover body fitting structure or cover body screw structure and knob fitting structure or knob screw structure, so as to form the fitting structure or the screw structure, and the knob is detachably fitted or screwed on the cover body through the fitting structure or the screw structure; The cover body is provided with a connecting hole; The connecting hole of the cover body is a circular hole, a rectangular hole or a polygonal hole; and / or In the knob fitting structure, the outer end of the outwardly protruding insertion plate on the knob is axially provided with a connecting section, the outer contour of the connecting section is smaller than the knob mounting hole, a shoulder is separately connected at the outer end of the connecting section, a cylinder and an annular groove are respectively arranged on the two end faces adjacent to the connecting section and the shoulder, the cylinder is inserted into the annular groove, a screw is additionally arranged, screw holes are arranged on the insertion plate and the connecting section, a screw hole is arranged on the shoulder, the screw connects the separate connecting section and the shoulder into one body, a spring is arranged on the screw rod between the connecting section and the shoulder, and the spring is arranged in the cylinder, The outer contour of the shoulder is larger than the maximum length of the knob mounting hole, so that when the insertion plate of the knob is inserted into the knob mounting hole, the shoulder abuts against the outer side of the cover body or the outer side fixing member, and the outer side of the shoulder is the knob.

2. A knob assembly in a pot lid which can be easily disassembled, characterized by: The cover body fitting structure or the cover body screw structure and the knob fitting structure or the knob screw structure are arranged on the knob, and the cover body fitting structure or the cover body screw structure is matched with the knob fitting structure or the screw structure to form the fitting structure or the screw structure.

3. The knob assembly according to claim 2, characterized in that: The fitting structure is: The cover body fitting structure is arranged on a cover body fitting assembly, and the cover body fitting assembly comprises a fitting member and a fixing member, and the cover body fitting structure is arranged on the outer side of the fitting member; The knob fitting structure is arranged on the inner side end face of the knob, that is, the knob connecting end; or The cover body fitting structure comprises an outer side fixing member and an inner side fixing member, The outer side fixing member is an end cover, the knob mounting hole in a non-circular shape is arranged on the outer side fixing member, and an outer connecting pipe is arranged on the inner side of the outer side fixing member; The inner side fixing member is a cover, an inner connecting pipe is arranged on the outer side end face of the inner side fixing member and matched with the outer connecting pipe on the outer side fixing member, so that the inner connecting pipe is inserted into the outer connecting pipe; The outer side fixing member with the knob mounting hole is fixed on the cover body through the inner side fixing member; The knob fitting structure is an outwardly protruding insertion plate on the inner side, the insertion plate is a column in a non-circular shape, an insertion section is formed, the maximum length of the cross section of the insertion section is smaller than the maximum length of the knob mounting hole but larger than the minimum length of the knob mounting hole, so that the insertion plate can pass through the knob mounting hole, and the insertion plate is clamped on the cover body after being turned through a set angle and cannot be pulled out, so that the knob is fixed on the cover body; The bottom surface of the inner connecting pipe is inwardly recessed from the outer side surface of the cover body by a distance, and / or the bottom surface of the outer connecting pipe is inwardly recessed from the inner side surface of the cover body by a distance, or The cover button fitting structure comprises a pin shaft (D201), a connecting cover (D202), a cover button part (D203), a spring (D204) and a screw (D205). The end of the pin shaft (D201) is a shaft cap (D201a) which functions as a plug-in board. The shaft cap (D201a) has a connecting part (D201b), a shoulder (D201c) and a rectangular section (D201d) on the outer side. An axial screw hole is arranged on the outer end surface of the pin shaft. The inner side of the connecting cover (D202) is a conical cover (D202a) and the outer end surface is a partition plate (D202b). A through hole is arranged on the partition plate (D202b). A cylindrical body (D202c) is arranged on the outer side of the partition plate. The cover button part (D203) is a conical body. A pit (D203a) is arranged on the inner side end surface. The axial depth of the pit is greater than the length of the cylindrical body on the connecting cover. A rectangular blind hole (D203b) is arranged on the bottom surface of the pit. A screw hole (D203c) is arranged on the bottom surface of the blind hole. The pin shaft, the connecting cover and the cover button part are connected by the screw (D205). The shoulder (D201c) of the pin shaft (D201) is arranged on the partition plate (D202b) of the connecting cover (D202). The rectangular section (D201d) is matched and inserted into the blind hole (D203b) of the cover button part (D203). The cylindrical body on the connecting cover (D202) is inserted into the pit of the cover button part. One end of the spring (D204) is arranged on the partition plate (D202b) of the connecting cover. The other end of the spring (D204) is arranged on the bottom surface of the pit of the cover button part (D203); or The cover button fitting structure is a cover button assembly which comprises a cover button part A (C1) and a lock pin (C2). The cover button part comprises a cover button shell (C11) which is a cylindrical body. The outer end surface is closed by a rear end cover (C111). The inner end surface is provided with a front end cover (C112). A through needle hole is arranged at the center of the front end cover for inserting the lock pin. A non-circular boss is arranged on the end surface of the front end cover towards the outside of the cylindrical body and matched with a non-circular cover button mounting hole on the cover body. A handle clamping groove (C112d) is arranged on the end surface of the front end cover towards the inside of the cylindrical body. A handle through hole is arranged on the side wall close to the rear end cover or the rear end cover. A lock and unlock structure of the lock pin is arranged in the cover button shell. One end of the unlock handle is clamped on the handle clamping groove. The other end is exposed from the handle through hole. The lock pin has a lock pin cap and a pin rod. The shape and size of the lock pin cap are the same as those of the boss. The lock pin cap is arranged on the inner side surface of the cover body at a certain angle. Or the lock pin cap is larger than the cover button mounting hole on the cover body. The pin rod is inserted into the needle hole in the cover button shell and locked by the lock and unlock structure; or The spiral structure further comprises: The cover body spiral structure is arranged on a cover body spiral assembly which comprises a spiral part and a fixing part. The cover body spiral structure is arranged on the outer side surface of the spiral part. The cover button spiral structure is arranged on the inner side end surface of the cover button, i.e. the cover button connecting end, and matched and combined with the cover body spiral structure; or The screw structure is: a cover button assembly including a screw A (B2), a connecting piece (B3) and a cover button (B4), the screw cap (B2a) of the screw and the insertion part (B31) of the connecting piece (B3) inserted into the connecting hole (B11) of the cover body (B1) are both non-circular cross sections and have the same cross section, the rear of the insertion part (B31) is provided with an abutting part (B32) for abutting the connecting piece (B3) on the cover body (B1), the center of the connecting piece (B3) is provided with a screw hole (B33), the end face of the cover button (B4) adjacent to the connecting piece (B3) matches the adjacent end face of the connecting piece (B3), the center of the cover button (B4) is also provided with a screw hole (B41), the screw A (B2) connects the connecting piece (B3) and the cover button (B4) into a whole, the outer contour of the screw cap (B2a) is the same as the insertion part (B31), or is larger than the outer contour of the insertion part (B31); or, The screw structure is: including a screw A (B2) and a cover button (B4), the outer contour of the screw cap (B2a) of the screw A (B2) is larger than the connecting hole (B11) of the cover body, a non-circular boss (B2b) is arranged on one side surface of the screw rod of the screw cap, and a screw hole (B41) is arranged on the cover button.

4. The cover button assembly according to claim 3, wherein: The embedded structure is a sliding embedded structure, or a rotating embedded structure; or, The screw structure includes a screw column and a screw hole, the screw column is protruded on the outer side surface of the screw member of a cover body screw structure component on the cover body, or is protruded on the inner side end surface of the cover button; the screw hole is recessed on the inner side end surface of the cover button, or is recessed on the outer side surface of the screw member, and the screw button and the screw hole are matched through the thread structure to make the cover button and the embedded member or the screw member detachably connected; and / or, The connecting hole on the cover body is non-circular in shape matched with the screw structure; and / or, The embedded member or the screw member and the fixing member are provided with a fixing structure; or, In the cover body embedded structure, the non-circular cover button mounting hole is a non-circular hole in the shape of a dumbbell, and correspondingly, In the cover button embedded structure, the non-circular embedded segment on the protruding insertion plate is a dumbbell-shaped non-cylindrical body similar to the shape of the mounting hole; or, In the cover button embedded structure, the insertion plate is inserted into the cover button mounting hole and accommodated in the outer connecting pipe, and is fixed on the outer side fixing member end cover by rotating to a set angle; and / or, The side wall of the inner connecting pipe is provided with a plurality of slots extending axially from the end surface of the inner connecting pipe to the length of the inner connecting pipe segment, so that the inner connecting pipe has radial elasticity and can be expanded and fixed in the outer connecting pipe when inserted into the outer connecting pipe, and / or, The cover button mounting hole is provided with a recess hole or a through hole beside the cover button on the cover body or the end cover of the outer side fixing member connected to the cover body, and correspondingly, protrusions are arranged on the corresponding positions of the opposite side surfaces of the insertion plate on the cover button, so that the protrusions are clamped into the recess hole or the through hole when the insertion plate is rotated to a set angle; and / or, The connecting hole on the cover body is a round hole, a rectangular hole, or a polygonal hole; and / or, In the cover knob embedding structure, the outer end of the outwardly protruding insertion plate is provided with a connecting section extending axially, the outer contour of the connecting section is smaller than that of the cover knob mounting hole, the axial length d1 of the connecting section is equivalent to the axial length D1 of the cover knob mounting hole, a shoulder is connected to the outer end of the connecting section, or a shoulder is separately connected to the outer end of the connecting section, a cylinder and an annular groove are respectively arranged on the two end faces adjacent to the connecting section and the shoulder, the cylinder is inserted into the annular groove, and a spring is additionally arranged on the screw rod between the connecting section and the shoulder, and the spring is arranged in the cylinder; The outer contour of the shoulder is larger than the maximum length of the cover knob mounting hole, so that when the insertion plate of the cover knob is inserted into the cover knob mounting hole, the shoulder abuts against the outer side of the cover or the outer side of the sealing cover of the outer side fixing member, and the outer side of the shoulder is the rotary knob; or The locking and unlocking structure includes a conical sleeve cap (C12), a compression spring (C13), an inner conical cylinder (C14), locking steel balls (C15), an outer conical cylinder (C16), and an unlocking pull handle, the conical sleeve cap is a conical cylinder, the small-end port of the conical sleeve cap is fixed to the inner side of the rear end cover of the cover knob shell, the large-end port of the inner conical cylinder is inserted into the large-end port of the conical sleeve cap and abuts against the conical inner wall of the conical sleeve cap, the compression spring is arranged between the conical sleeve cap and the inner conical cylinder, the three locking steel balls are radially movably clamped in the radial perforations (C14a) on the conical side wall of the inner conical cylinder, the end cover of the front end of the inner conical cylinder is provided with an inner conical cylinder boss (C141), the inner conical cylinder boss is provided with a needle hole (C141a), the large-end port of the outer conical cylinder is inserted into the cover knob shell and is combined and fixed with the large-end port of the conical sleeve cap, the front small-end port of the outer conical cylinder is provided with a cover plate (C161), the cover plate is provided with a cover plate perforation (C161a) for the inner conical cylinder boss to pass out, the conical side wall of the outer conical cylinder limits the part of the outer surface of the inner conical cylinder exposed to the locking steel balls, the unlocking pull handle is a rod body, the cross rod (C17a) at one end of the rod body is clamped into the handle clamping groove on the front end cover to limit, the cross rod is provided with a cross rod needle hole, the inner conical cylinder is fixedly connected with the cross rod or abuts against the front end cover of the cover knob shell and the inner conical cylinder boss (C141) through the compression spring, the cross rod is connected with one end of a connecting rod, the connecting rod is arranged in the cover knob shell and outside the outer conical cylinder and the sleeve cap, the other end of the connecting rod serves as a handle and passes out from the handle perforation in the rear end cover of the cover knob shell, or the cross rod is hingedly connected with the cover knob shell, the other end of the connecting rod is connected with a button (C18c) and passes out from the handle perforation in the rear end cover of the cover knob shell.

5. The cover knob assembly according to claim 4, wherein: The sliding embedding structure is: The cover body embedding structure arranged on the outer side end face of the embedding part in the cover body embedding assembly is an outwardly protruding insertion part or an inwardly recessed insertion slot parallel to each other. The cover knob fitting structure is an insertion slot or an insertion part on the inner end surface of the cover knob, which matches the insertion part or the insertion slot on the fitting part; the detachable connection of the cover knob and the cover body is realized by inserting the insertion part into the insertion slot; Alternatively, The rotating fitting structure is: The cover body fitting structure on the outer end surface of the fitting part in the cover body fitting assembly is an outwardly protruding insertion plate, which is non-circular or an insertion hole cavity on the outer end surface of the fitting part, and the insertion hole at the end of the insertion hole cavity has a non-circular insertion hole; correspondingly, the cover knob fitting structure is an insertion hole cavity on the end surface of the cover knob connecting end, which is provided with a non-circular insertion hole, or a protruding non-circular insertion plate on the end surface of the cover knob connecting end; The maximum length of the insertion plate is smaller than the maximum length of the insertion hole but larger than the minimum length of the insertion hole, so that the insertion plate can pass through the insertion hole and enter the insertion hole cavity, and after the insertion plate is turned by an angle, it is clamped in the insertion hole and cannot be pulled out; or The screw structure is a screw connection structure with a clamping anti-backout structure; and / or On the cover body fitting structure or the screw structure, the fixing structure between the fitting part or the screw part and the fixing part is that one end of the fixing part has a fixing part flange, the fixing part flange is connected to a fixing part cylinder, the fixing part cylinder is provided with a clamping structure, the fixing part cylinder is inserted into the connecting through hole of the cover body, and the fixing part flange abuts against the inner surface of the cover body, The inner end of the fitting part or the screw part towards the inner side of the cover body is provided with a fixing part matching the clamping structure, which is inserted into the fixing part cylinder and clamped with the fixing part cylinder through the clamping structure, and the outer end away from the cover body is provided with a flange, and the cover body fitting structure is arranged on the end surface of the flange, and the flange abuts against the outer surface of the cover body; or, on the cover body fitting structure or the screw structure, the fixing structure between the fitting part or the screw part and the fixing part is that the fixing part is a screw, the fitting part or the screw part is a cylinder body with a flange, a through hole is arranged on the flange and communicates with the cylinder body, and a screw thread is arranged on the inner wall of the through hole, the flange outer end surface of the fitting part or the screw part is provided with the fitting structure or the screw structure, the fitting part or the screw part abuts against the outer surface of the cover body, and the fixing part, i.e. the screw, passes through the connecting through hole from the inner surface of the cover body and is screwed into the inner screw thread of the fitting part or the screw part to fix the fitting part or the screw part on the cover body; or, the fitting part or the screw part includes a cylinder body with a flange, a through hole is arranged on the flange and communicates with the cylinder body, and a hollow inner screw thread rod is inserted into the through hole, the fixing part is a screw, which passes through the connecting through hole from the inner surface of the cover body and is inserted into the hollow inner screw thread rod to be screwed and fixed, and the flange outer end surface of the fitting part or the screw part is provided with the cover body fitting structure or the cover body screw structure; or In the cover body fitting structure, the non-circular cover knob mounting hole shaped like a dumbbell is a small circular hole as a positioning hole, and two fan-shaped holes with the same center as the small circular hole are connected on both sides of the center of the small circular hole, forming a non-circular hole shaped like a dumbbell.

6. The knob assembly according to claim 5, wherein: In the sliding fitting structure, The insertion part is two parallel bent protrusions provided on the corresponding end face, and correspondingly, the insertion groove is a groove corresponding to the bent protrusions and provided on the corresponding end face. The insertion part is a protrusion on the corresponding end face, and at least two opposite edges of the protrusion form outward protrusions and are parallel to each other, and correspondingly, the insertion groove is an insertion groove corresponding to the protrusions and provided on the corresponding end face, and opposite two side walls of the insertion groove match the two parallel edges of the protrusion, and at least one side of the insertion groove is provided with a port on the edge of the corresponding end face to form an opening. The screw connection structure with a clamping anti-backout structure is that the stud is provided on the inner side end face of the knob and is a cylindrical body, and at least two radial cross columns are uniformly distributed on the side peripheral surface of the cylindrical body, and correspondingly, the screw hole structure is that a vertical circular groove is provided on the outer side face of the screw member on the cover body screw assembly or the inner side end face of the knob, the center of the groove bottom face of the circular groove is provided with a recess corresponding to the cylindrical body of the stud, vertical slots corresponding to the number and position of the cross columns on the stud are provided on the side wall of the circular groove, the vertical slots are provided with downward curved spiral grooves in the circumferential direction, and at the lowest part of the spiral grooves, a curved groove segment opposite to the lifting direction of the spiral groove is smoothly and transitionally provided to match the radial cross column to clamping and prevent backout; and / or, The fixing structure of the fitting member or the screw member and the fixing member is: One end of the inner side of the fixing member cylinder is closed, the outer edge of the closing plate on the fixing member cylinder is formed into an annular stopper to form a fixing member flange for clamping on the inner side face of the cover body, and a plurality of opening grooves are provided on the side wall of the fixing member cylinder and extend from the end face of the outer end of the fixing member cylinder to the closing plate and are parallel to the axis of the fixing member cylinder, so that the side wall of the fixing member cylinder has a contractile elasticity; The fitting member or the screw member has a cylinder with an outer diameter matching the inner diameter of the fixing member cylinder, so that when the cylinder is inserted into the fixing member cylinder, the fixing member cylinder is expanded, and when the fixing member and the fitting member or the screw member are respectively inserted into the connection through hole from the inner side and the outer side of the cover body, the cylinder of the fitting member or the screw member is inserted into the fixing member cylinder and is fastened into an integral whole by the restoring force of the fixing member cylinder; and / or, In the rotating fitting structure, the insertion hole and the insertion plate are similar shapes.

7. The knob assembly of claim 6, wherein: The similar shapes are similar triangular insertion plates and insertion holes, or similar oval insertion plates and insertion holes, or similar rectangular insertion plates and insertion holes, and the insertion plate is smaller than the insertion hole.

8. The knob assembly of claim 6, wherein: The inner wall of the fixing member cylinder and the outer wall of the fitting member or the spiral member cylinder are provided with matching tooth-shaped structures to form an anti-loosening structure; and / or, An annular groove is arranged on the end face of the flange of the fitting member or the spiral member facing the end face of the fixing member cylinder to match the end face of the fixing member cylinder; and / or, An annular groove is arranged on the bottom face of the fixing member cylinder, i.e. the closing plate, to match the end face of the cylinder of the fitting member or the spiral member, so that when the end plate of the fitting member or the spiral member and the outer side face of the cover body can be fixedly attached when the cover body of different thicknesses is matched; and / or, The cover body fitting assembly or the cover body spiral assembly further comprises a resilient sealing gasket arranged between the fixing member and the inner surface of the cover body; or The cover body fitting assembly or the cover body spiral assembly further comprises a resilient sealing gasket, which comprises a gasket cylinder, one end of which is provided with a sealing gasket flange radially outward, the gasket cylinder of the sealing gasket is inserted into the connecting hole of the cover body outside the fixing member cylinder, the sealing gasket flange is abutted against the inner side face of the cover body, and the fixing member flange on the fixing member is abutbed against the sealing gasket flange.

9. A knob assembly for a pot lid, the knob assembly being readily detachable, the knob assembly comprising: It comprises a cover knob, which is fixed on the cover body through a cover body fitting structure and a cover knob fitting structure, The cover body fitting structure comprises an inner side knob fixing member, which comprises a closing cover, an inner side pipe is arranged on the outer side face of the closing cover facing the cover body, The cover knob fitting structure is provided with an outer side pipe on the inner side face of the cover knob facing the cover body, and a handle is arranged on the other side face of the cover knob, the inner side pipe is inserted into the connecting hole of the cover body, the outer periphery of the inner side pipe outside the outer side face of the closing cover is attached to the inner side face of the cover body, and the outer side pipe on the cover knob is cooperatively inserted into the inner side pipe.

10. The cover knob assembly according to claim 9, wherein: A plurality of axial slots are arranged on the pipe wall of the inner side pipe of the inner side knob fixing member from the outer end thereof inwardly, so that the pipe wall of the inner side pipe has radial elasticity, and when the outer side pipe of the cover knob is inserted into the inner side pipe, the inner side pipe is lifted up, so that the cover knob is more stably fixed; and / or, Matching circumferential tooth grooves are arranged on the inner wall of the inner side pipe and the outer wall of the outer side pipe, so that they are more firmly fixed; and / or The connecting hole of the cover body is non-circular, and the shape of the inner side pipe of the inner side knob fixing member and the outer side pipe of the cover knob matched with the connecting hole of the cover body matches the shape of the connecting hole of the cover body.

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