A kettle lid assembly structure and the kettle therein

Abstract

This invention relates to the field of teaware technology, and more specifically, to a teapot lid assembly structure and a kettle thereof. The teapot lid assembly structure includes a kettle body with an opening, a handle, and a lid. The handle is mounted on the side wall of the kettle body, and the lid is used to close the opening. It also includes an eccentric adjustment device with a locking mechanism. The lid has a mounting hole, and the handle has a connecting hole near the opening. The eccentric adjustment device passes through both the mounting hole and the connecting hole. Rotating the eccentric adjustment device until the lid and opening are tightly closed, the locking mechanism locks the eccentric adjustment device. This invention adds an eccentric adjustment device during the assembly process of the lid's mounting hole and the handle's connecting hole. The offset generated during rotation of the eccentric adjustment device compensates for assembly errors between the lid and the kettle body opening, achieving a complete lid fit without tilting. Kettles using this lid assembly structure exhibit good sealing and a high degree of fit between the lid and the opening.

Description

Technical Field

[0001] This invention relates to the field of teaware technology, and more specifically, to a lid assembly structure and a kettle thereof. Background Technology

[0002] There are many types of teapots, but to avoid complex and cumbersome structures, many people still prefer to use kettles for brewing tea. Kettles on the market generally consist of a body, a handle, and a lid. The lid and handle are connected by hinges or other means to seal the opening of the kettle body.

[0003] For example, Chinese Patent Publication No. CN205947646U discloses an automatic flip-top kettle, including a lid and a kettle body. A handle is provided on the kettle body, and the handle is hinged to the lid. A drive mechanism for rotating the lid is located inside the handle. The drive mechanism includes a motor that drives the lid to rotate, and the motor is sealed to the handle with sealant. Similar kettles can use a wireless receiver to drive the motor to rotate, thereby causing the lid connected to the motor to rotate, thus achieving automatic flip-top operation.

[0004] For example, Chinese Patent Publication No. CN217338212U discloses a flip-top mechanism and its kettle. The end of the kettle body is provided with an opening; the lid is rotatably mounted on the handle and closes or opens the opening of the kettle body; the lid is provided with a mounting hole; a first positioning member connects the handle and the lid; the first positioning member is sleeved on the mounting hole and positioned and connected with the mounting hole. The installation position of the first positioning member relative to the mounting hole is determined by the positioning connection between the first positioning member and the mounting hole, so as to adjust the installation position of the lid relative to the handle, thereby adjusting the fitting gap of the lid when closing the opening of the kettle body, and thus closing the lid with the opening of the kettle body.

[0005] However, for kettles like the one mentioned above, whether they are automatic or manual, there may be installation errors in the assembly of various components, such as the installation of the handle bracket relative to the kettle body, or the installation of the handle relative to the handle bracket. These assembly errors often result in the lid not fitting tightly to the opening of the kettle body, or the lid tilting back and forth. Summary of the Invention

[0006] This invention provides a kettle lid assembly structure. During the assembly process of the kettle lid mounting hole and the handle connection hole, an eccentric adjustment device is added. The offset generated by the eccentric adjustment device during rotation compensates for the assembly error between the kettle lid and the kettle body opening, so that the kettle lid can completely cover the opening without tilting.

[0007] The present invention also provides a kettle that adopts the above-mentioned lid assembly structure, wherein the lid can completely cover the opening of the kettle body, and the lid and the opening have good tightness and high fit.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A kettle lid assembly structure is provided, including a kettle body with an opening, a handle, and a kettle lid. The handle is mounted on the side wall of the kettle body, and the kettle lid is used to cover the opening. It also includes an eccentric adjustment device with a locking mechanism. The kettle lid has a mounting hole, and the handle has a connecting hole at the end near the opening. The eccentric adjustment device passes through both the mounting hole and the connecting hole. The eccentric adjustment device is rotated until the kettle lid is tightly closed with the opening, and the locking mechanism locks the eccentric adjustment device.

[0009] Furthermore, the eccentric adjustment device includes an adjustment shaft, a transmission mechanism, and a locking mechanism; the adjustment shaft passes through the connecting hole, and the adjustment shaft has an adjustment hole along the axial direction, with the axis of the adjustment hole being eccentrically set relative to the axis of the adjustment shaft; the transmission mechanism has a positioning hole along the axial direction, the axis of the positioning hole coinciding with the axis of the transmission mechanism, one end of the transmission mechanism passing through the mounting hole and being inserted into the adjustment hole, and the other end being located at the mounting hole; when the adjustment shaft is rotated until the lid and the opening are tightly closed, the locking mechanism locks the end of the transmission mechanism that passes through it and presses the other end of the transmission mechanism against the mounting hole.

[0010] Furthermore, the lid has a mounting portion extending outward from the side near the handle, and two connecting ears are provided opposite each other on the side of the mounting portion facing the handle. The two connecting ears are respectively fitted to both sides of the connecting hole; there are two mounting holes, and the two mounting holes are respectively provided at the two connecting ears. The transmission mechanism includes a pair of transmission shafts mounted on both sides of the adjusting shaft. Each transmission shaft includes a transmission part and a fixing part. The transmission part passes through the mounting hole and is installed inside the adjusting hole. The fixing part is located at the mounting hole. The transmission shaft has a connecting hole along the axial direction that passes through the transmission part and the fixing part. The two connecting holes form the positioning hole. The axes of the two connecting holes are on the same axis and coincide with the axis of the positioning hole. The locking mechanism passes through the connecting hole, and the adjusting shaft is rotated until the lid and the opening are tightly closed. The locking mechanism fixes the pair of transmission parts and makes the two fixed parts abut against the two connecting ears respectively.

[0011] Preferably, the outer diameter of the adjusting shaft is clearance-fitted with the inner diameter of the connecting hole, and the inner diameter of the adjusting hole is clearance-fitted with the outer diameter of the transmission part of the transmission shaft.

[0012] As an improvement, a countersunk plate is provided at one end of the connecting hole, and a positioning element is provided on the countersunk plate; the adjusting shaft includes an insertion end and a fixed end, the adjusting hole passes through the insertion end and the fixed end, the fixed end is provided with a shoulder, and a limiting element is provided on the end face of the shoulder facing the insertion end; the insertion end of the adjusting shaft passes through the connecting hole from the side of the connecting hole where the countersunk plate is provided, and the limiting element on the shoulder is adapted to the positioning element on the countersunk plate.

[0013] Preferably, the positioning element is a plurality of countersunk holes equidistantly arranged along the bottom surface of the countersunk platform, and the limiting element is a plurality of protrusions equidistantly arranged along the end face of the shaft shoulder, wherein the protrusions correspond one-to-one with the countersunk holes; when the adjusting shaft is rotated, the protrusions slide sequentially to the adjacent countersunk holes until the lid of the pot is sealed with the opening.

[0014] Preferably, the adjusting hole is a cylindrical hole, the end hole of the adjusting hole on the insertion end is circular, and the end hole on the shoulder of the fixed end is a regular polygon, and the adjusting hole has the same diameter as the inscribed circle of the regular polygon; the transmission part of the transmission shaft is a cylindrical structure, the shape of the fixed part is adapted to the end hole on the shoulder, and the outer diameter of the transmission part is clearance-fitted with the inner diameter of the adjusting hole.

[0015] As an improvement, the locking mechanism includes a first locking member and a second locking member that are connected to each other; the end hole on the fixed part of the connecting hole is the first opening, and the end hole on the transmission part is the second opening. The size of the first locking member and the second locking member is smaller than the size of the first opening and larger than the size of the second opening. The first locking member and the second locking member enter the second opening from the first opening on both sides respectively. When the adjusting shaft is rotated until the lid and the opening are tightly closed, the first locking member and the second locking member are fixedly connected to tighten the two transmission parts and make the two fixed parts abut against the two connecting ears respectively.

[0016] Preferably, the first locking member and the second locking member are respectively a bolt and a nut that are compatible with each other.

[0017] The present invention also provides a kettle, including a lid assembly structure as described in any of the above claims.

[0018] Compared with the prior art, the lid assembly structure of the present invention adds an eccentric adjustment device with a locking mechanism during the assembly process of the lid mounting hole and the handle connection hole. The eccentric adjustment device passes through both the mounting hole and the connection hole during assembly. The tightness between the lid and the opening is adjusted by rotating the eccentric adjustment device. After adjustment, the position of the eccentric adjustment device is locked by the locking mechanism. This lid assembly structure can compensate for the assembly error between the lid and the opening of the pot body by the offset generated by the eccentric adjustment device during rotation, so as to achieve the lid completely covering the opening without tilting.

[0019] The kettle of the present invention adopts the above-mentioned kettle lid assembly structure, and its lid can completely cover the opening of the kettle body, with good tightness and high fit between the lid and the opening. Attached Figure Description

[0020] Figure 1 This is an overall view of the lid assembly structure in one embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the lid of a teapot according to one embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of a handle in one embodiment of the present invention.

[0023] Figure 4 This is an exploded view of an eccentric adjustment device according to an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of a drive shaft in one embodiment of the present invention.

[0025] Figure 6 This is a partial structural diagram of the handle in one embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the adjusting shaft in one embodiment of the present invention.

[0027] Figure 8 This is another schematic diagram of the adjusting shaft in one embodiment of the present invention. Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It should be understood that terms such as "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationships; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0029] Example 1 like Figures 1 to 3The illustration shows an embodiment of the lid assembly structure of the present invention, including a pot body 10, a handle 20, a lid 30, and an eccentric adjustment device 40 with a locking mechanism (not shown). The upper end of the pot body 10 has an opening 11, the handle 20 is mounted on the side wall of the pot body 10, and the lid 30 is used to close the opening. The lid 30 has a mounting hole 312, and the handle 20 has a connecting hole 21 at the end near the opening. During assembly, the eccentric adjustment device 40 passes through both the mounting hole 312 and the connecting hole 21. The eccentric adjustment device 40 is rotated until the lid 30 is tightly closed with the opening, and then the locking mechanism locks the position of the eccentric adjustment device 40, thereby positioning the assembly position between the lid 30 and the handle 20.

[0030] In this embodiment, the lid assembly structure adds an eccentric adjustment device 40 with a locking mechanism during the assembly process of the lid 30 mounting hole 312 and the handle 20 connecting hole 21. The eccentric adjustment device 40 can pass through both the mounting hole 312 and the connecting hole 21 during assembly. In the actual assembly process, the eccentric adjustment device 40 is rotated to adjust the tightness between the lid 30 and the opening. The offset generated by the eccentric adjustment device 40 during rotation compensates for the assembly error between the lid 30 and the opening of the pot body 10. After adjustment, the position of the eccentric adjustment device 40 is locked by the locking mechanism, thereby achieving complete lid 30 covering the opening and no tilting of the lid 30 at the front or back.

[0031] Example 2 like Figures 1 to 5 The illustration shows an embodiment of the lid assembly structure of the present invention, including a pot body 10, a handle 20, a lid 30, and an eccentric adjustment device 40 with a locking mechanism. The upper end of the pot body 10 has an opening, the handle 20 is mounted on the side wall of the pot body 10, the lid 30 is used to cover the opening, the lid 30 has a mounting hole 312, and the handle 20 has a connecting hole 21 at the end near the opening. The eccentric adjustment device 40 includes an adjustment shaft 41, a transmission mechanism 42, and a locking mechanism.

[0032] like Figure 3 , Figure 4 As shown, the adjusting shaft 41 passes through the connecting hole 21. The adjusting shaft 41 has an adjusting hole 411 along the axial direction. The axis of the adjusting hole 411 is eccentrically set relative to the axis of the adjusting shaft 41, that is, the axis of the adjusting hole 411 does not coincide with the axis of the adjusting shaft 41, so that there is a certain amount of offset between the two. As a result, the linkage connected to the shaft can generate a certain amount of offset as the adjusting shaft 41 rotates when the shaft passes through the adjusting hole 411.

[0033] In this embodiment, the transmission mechanism 42 is provided with a positioning hole along the axial direction. The axis of the positioning hole coincides with the axis of the transmission mechanism 42. One end of the transmission mechanism 42 passes through the mounting hole 312 and is installed in the adjustment hole 411, while the other end is located at the mounting hole 312. The adjustment shaft 41 is rotated until the lid 30 is tightly closed with the opening. The locking mechanism locks the end of the transmission mechanism 42 that is inserted and makes the other end of the transmission mechanism 42 press against the mounting hole 312.

[0034] As an improvement to this embodiment, such as Figure 2 As shown, the lid 30 has a mounting portion 31 extending outward from the side near the handle 20. Two connecting ears 311 are arranged opposite each other on the side of the mounting portion 31 facing the handle 20. The two connecting ears 311 are respectively fitted onto both sides of the connecting hole 21, that is, the two connecting ears 311 are symmetrically clamped on both sides of the handle 20 near the opening of the pot body 10, for a more stable mounting of the lid 30. Correspondingly, two mounting holes 312 are provided, and these two mounting holes 312 are respectively located at the two connecting ears 311.

[0035] Opposite to mounting hole 312, such as Figure 4 As shown, the transmission mechanism 42 of this embodiment includes a pair of transmission shafts 421 mounted on both sides of the adjusting shaft 41, that is, there are two transmission shafts 421. Wherein, as Figure 5 As shown, the drive shaft 421 includes a drive portion 422 and a fixing portion 423. The drive portions 422 of the two drive shafts 421 pass through the mounting holes 312 on the corresponding sides and are finally inserted into the adjustment holes 411. After assembly, the fixing portion 423 is located at the mounting holes 312. Each drive shaft 421 has a connecting hole 424 that passes through the drive portion 422 and the fixing portion 423 along the axial direction. Since the drive shafts 421 are arranged in pairs, the two connecting holes 424 form the positioning hole mentioned above. That is, the axes of the two connecting holes 424 are on the same axis and coincide with the axis of the positioning hole. In this embodiment, the locking mechanism passes through the connecting hole 424. In practice, two locking mechanisms can also be provided as needed and pass through the two connecting holes 424 respectively. When the adjusting shaft 41 is rotated until the lid 30 is tightly closed with the opening, the locking mechanism is used to fix the pair of transmission parts 422. After the two transmission parts 422 are fixed, the two fixing parts 423 abut against the two connecting ears 311 respectively, thereby positioning the connecting ears 311, that is, positioning the assembly position of the lid 30.

[0036] In this embodiment, the outer diameter of the adjusting shaft 41 is clearance-fitted with the inner diameter of the connecting hole 21, and the inner diameter of the adjusting hole 411 is clearance-fitted with the outer diameter of the transmission part 422 of the transmission shaft 421. That is, the outer diameter of the adjusting shaft 41 is slightly smaller than the inner diameter of the connecting hole 21 and matches the size of the connecting hole 21; the outer diameter of the transmission part 422 of the transmission shaft 421 is slightly smaller than the inner diameter of the adjusting hole 411 and matches the size of the adjusting hole 411, so as to facilitate assembly and ensure that it is not easily loosened after assembly. It is understood that if the shaft passing through the hole is not a perfect cylinder (such as having a step, spline, or irregular cross-section), the outer diameter generally refers to the maximum outer diameter of the main body part used for fitting or passing through. Furthermore, the connecting hole 21 in this embodiment is a strip-shaped hole. It should be noted that the strip-shaped hole is usually oblong, waist-shaped, or rectangular, and its width (short side dimension) is the key factor restricting the passage of the shaft. If the shaft is cylindrical, then as long as the diameter of the shaft is less than or equal to the width of the strip-shaped hole, the shaft can pass through.

[0037] Example 3 like Figures 1 to 8 The image shows an embodiment of the lid assembly structure of the present invention. As an improvement to the above embodiment, such as... Figure 6 As shown, in this embodiment, a countersunk platform 211 is provided at one end hole of the connecting hole 21 on the handle 20, and a positioning member 212 is provided on the countersunk platform 211. Figure 7 As shown, the adjusting shaft 41 includes an insertion end 412 and a fixed end 413, with an adjusting hole 411 passing through both the insertion end 412 and the fixed end 413. The fixed end 413 of the adjusting shaft 41 also has a shoulder 414, and a limiting member 415 is provided on the end face of the shoulder 414 facing the insertion end 412. The insertion end 412 of the adjusting shaft 41 passes through the connecting hole 21 from the side where the countersunk platform 211 is located. The limiting member 415 on the shoulder 414 is adapted to the positioning member 212 on the countersunk platform 211. That is, the axial positioning of the adjusting shaft 41 and the connecting hole 21 can be achieved by the engagement of the end face of the shoulder 414 with the bottom surface of the countersunk platform 211.

[0038] As an improvement to this embodiment, the positioning member 212 can be a plurality of countersunk holes equidistantly arranged along the bottom surface of the countersunk platform 211, and the limiting member 415 can be a plurality of protrusions equidistantly arranged along the end face of the shoulder 414, with each protrusion corresponding to a countersunk hole. When the adjusting shaft 41 is rotated, the protrusions can slide sequentially to adjacent countersunk holes to position the adjusting shaft 41 and the connecting hole 21 until the lid 30 is tightly closed with the opening and then locked in place by the locking mechanism.

[0039] As another improvement to this embodiment, in order to further increase the convenience and stability of assembly, such as Figure 7 and Figure 8As shown, the adjusting hole 411 is a cylindrical hole. The end hole of the adjusting hole 411 on the insertion end 412 is circular, and the end hole on the shoulder 414 of the fixed end 413 is a regular polygon. The adjusting hole 411 has the same diameter as the inscribed circle of the regular polygon. Correspondingly, the transmission part 422 of the transmission shaft 421 has a cylindrical structure, which can better fit with the adjusting hole 411. The shape of the fixed part 423 matches the end hole on the shoulder 414, and the outer diameter of the transmission part 422 is clearance-fitted with the inner diameter of the adjusting hole 411. It can be understood that, for the sake of installation stability, the end hole on the side of the mounting hole 312 that abuts against the fixed part 423 of the transmission shaft 421 can also be set to a shape that matches it.

[0040] Example 4 like Figure 1 and Figure 4The diagram illustrates an embodiment of the lid assembly structure of the present invention. As an improvement to the above embodiment, the locking mechanism of this embodiment includes a first locking member 431 and a second locking member 432 that are connected to each other. The end hole of the connecting hole 424 on the fixing part 423 is a first opening 425, and the end hole on the transmission part 422 is a second opening 426. The dimensions of both the first locking member 431 and the second locking member 432 are smaller than the size of the first opening 425 and larger than the size of the second opening 426. Since the drive shafts 421 are arranged in pairs and respectively installed on both sides of the adjusting shaft 41, the drive shaft 421 includes a drive part 422 and a fixing part 423. The drive parts 422 on both sides pass through the mounting holes 312 on the corresponding sides and finally pass into the adjusting hole 411. During actual assembly, the first locking member 431 and the second locking member 432 enter from the first hole 425 on the fixing part 423 on both sides to the second hole 426 on the drive part 422. When the adjusting shaft 41 is rotated until the lid 30 is closed with the opening, the first locking member 431 and the second locking member 432 are fixedly connected to tighten the two drive parts 422 and make the two fixing parts 423 abut against the two connecting ears 311 respectively. The dimensions of the first locking member 431 and the second locking member 432 are smaller than the size of the first opening 425 to facilitate entry, while the dimensions of the first locking member 431 and the second locking member 432 are larger than the size of the second opening 426 to prevent dislodgement. However, it should be noted that in order for the first locking member 431 and the second locking member 432 to be fixedly connected, a portion of the first locking member 431 and / or the second locking member 432 needs to extend out of the second opening 426 for mutual connection and fixation. In a preferred embodiment, the first locking member 431 and the second locking member 432 can be selected from respectively compatible bolts and nuts. The thread size of the bolt can be smaller than the size of the second opening 426 to allow passage and tightening with the corresponding nut, while the head size of the bolt should be larger than the size of the second opening 426 to prevent dislodgement. Furthermore, after assembling the first locking member 431 and the second locking member 432, a cap 44 can be installed on the second opening 426 of the drive shaft 421 fixing part 423 for waterproofing and aesthetics.

[0041] In actual assembly, first install the adjusting shaft 41 of the eccentric adjustment device 40 into the connecting hole 21 at the upper end of the handle 20. Then, install the two connecting ears 311 of the lid 30 on both sides of the upper end of the handle 20, and align the two mounting holes 312 with the corresponding adjusting holes 411. Next, insert the two drive shafts 421 from the mounting holes 312 on both sides. After the drive shafts 421 are installed, use a tool to rotate the adjusting shaft 41. Use the offset generated by the rotation of the adjusting shaft 41 to adjust the tightness of the lid 30 and the opening 11 of the body 10. After adjustment, tighten the bolts and nuts that pass through the drive shafts 421 on both sides to complete the assembly of the lid 30 and the opening 11 of the body 10.

[0042] Example 5 This embodiment is a kettle using the lid assembly structure of the present invention. Its lid can completely cover the opening of the kettle body 10, and the lid and the opening have good tightness and high fit.

[0043] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A pot lid assembly structure comprising a pot body having an opening, a handle provided on a side wall of the pot body, and a pot lid for covering the opening, characterized in that, It also includes an eccentric adjustment device with a locking mechanism. The lid has a mounting hole, and the handle near the opening has a connecting hole. The eccentric adjustment device passes through both the mounting hole and the connecting hole. The eccentric adjustment device is rotated until the lid and the opening are tightly closed, and the locking mechanism locks the eccentric adjustment device.

2. The lid assembly according to claim 1, wherein The eccentric adjustment device includes an adjustment shaft, a transmission mechanism, and a locking mechanism; The adjusting shaft passes through the connecting hole, and the adjusting shaft has an adjusting hole along the axial direction. The axis of the adjusting hole is eccentrically set relative to the axis of the adjusting shaft. The transmission mechanism is provided with a positioning hole along the axial direction. The axis of the positioning hole coincides with the axis of the transmission mechanism. One end of the transmission mechanism passes through the mounting hole and is inserted into the adjustment hole, while the other end is located at the mounting hole. The adjustment shaft is rotated until the lid and the opening are tightly closed. The locking mechanism locks the end of the transmission mechanism that is inserted and presses the other end of the transmission mechanism against the mounting hole.

3. The lid assembly according to claim 2, wherein The lid has a mounting portion extending outward from the side near the handle. Two connecting ears are provided opposite each other on the side of the mounting portion facing the handle. The two connecting ears are respectively fitted to both sides of the connecting hole. There are two mounting holes, which are respectively located at the two connecting ears. The transmission mechanism includes a pair of transmission shafts mounted on both sides of the adjusting shaft. Each transmission shaft includes a transmission part and a fixing part. The transmission part passes through the mounting hole and is installed inside the adjusting hole, and the fixing part is located at the mounting hole. The drive shaft is provided with a through hole along the axial direction, which passes through the drive part and the fixing part. Two through holes form the positioning hole. The axes of the two through holes are on the same axis and coincide with the axis of the positioning hole. The locking mechanism passes through the connecting hole, and the adjusting shaft is rotated until the lid and the opening are tightly closed. The locking mechanism fixes the pair of transmission parts and makes the two fixed parts abut against the two connecting ears respectively.

4. The lid assembly structure according to claim 3, characterized in that, The outer diameter of the adjusting shaft is clearance-fitted with the inner diameter of the connecting hole, and the inner diameter of the adjusting hole is clearance-fitted with the outer diameter of the transmission part of the transmission shaft.

5. The lid assembly structure according to claim 3, characterized in that, A countersunk platform is provided at one end of the connecting hole, and a positioning element is provided on the countersunk platform; The adjusting shaft includes an insertion end and a fixed end, the adjusting hole passes through the insertion end and the fixed end, the fixed end is provided with a shoulder, and a limiting member is provided on the end face of the shoulder facing the insertion end; The insertion end of the adjusting shaft passes through the connecting hole from the side where the countersunk platform is located, and the limiting member on the shaft shoulder is adapted to the positioning member on the countersunk platform.

6. The lid assembly structure according to claim 5, characterized in that, The positioning element consists of several countersunk holes equidistantly arranged along the bottom surface of the platform, and the limiting element consists of several protrusions equidistantly arranged along the end face of the shaft shoulder. Each protrusion corresponds to a countersunk hole. When the adjusting shaft is rotated, the protrusions slide sequentially to adjacent countersunk holes until the lid and opening are tightly closed.

7. The lid assembly structure according to claim 5, characterized in that, The adjustment hole is a cylindrical hole, the end hole of the adjustment hole on the insertion end is circular, and the end hole on the shoulder of the fixed end is a regular polygon. The adjustment hole has the same diameter as the inscribed circle of the regular polygon. The transmission part of the transmission shaft is a cylindrical structure, the shape of the fixing part is adapted to the end hole on the shaft shoulder, and the outer diameter of the transmission part is clearance-fitted with the inner diameter of the adjustment hole.

8. The lid assembly structure according to claim 3, characterized in that, The locking mechanism includes a first locking element and a second locking element that are connected to each other. The end hole on the fixed part of the connecting hole is the first opening, and the end hole on the transmission part is the second opening. The size of the first locking member and the second locking member is smaller than the size of the first opening and larger than the size of the second opening. The first locking member and the second locking member enter the second opening from the first opening on both sides respectively. When the adjusting shaft is rotated until the lid and the opening are tightly closed, the first locking member and the second locking member are fixedly connected to tighten the two transmission parts and make the two fixed parts abut against the two connecting ears respectively.

9. The lid assembly structure according to claim 8, characterized in that, The first locking component and the second locking component are respectively a bolt and a nut that are compatible with each other.

10. A kettle, characterized in that, Includes the lid assembly structure as described in any one of claims 1 to 9.

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