Induction cooker knob and induction cooker

Abstract

The utility model relates to the technical field of household appliances, and particularly discloses an induction cooker knob and an induction cooker. The surface, attached to the induction cooker microcrystalline plate, of the rotary knob supporting table is a first end face, and the rotary knob is rotationally arranged on the second end face of the rotary knob supporting table. The second end face is provided with protruding structures which are arranged around the rotating axis of the rotary knob at intervals in the circumferential direction. When the rotary knob rotates, the protruding structures make contact with the rotary knob. The rotary knob can be circumferentially supported through the protruding structures, the shaking amplitude of the rotary knob on the microcrystal plate of the induction cooker is reduced, and the stability of the rotary knob of the induction cooker is improved.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular, to an induction cooker knob and an induction cooker. Background Art

[0002] An induction cooker is a kitchen appliance that uses the principle of electromagnetic induction to heat food. At present, the induction cooker knobs sold on the market are detachably connected to the knob brackets. Due to the detachable structure, the joint between the knob and the knob bracket is prone to looseness during repeated disassembly, which not only causes damage to the knob and the knob bracket, but also leads to a large swing of the knob on the surface of the induction cooker ceramic hob, which is not conducive to accurate operation by the user. Summary of the Utility Model

[0003] The purpose of the present application is to provide an induction cooker knob and an induction cooker, which can circumferentially support the knob through the protrusions, reduce the swing amplitude of the knob on the induction cooker ceramic hob, and improve the stability of the induction cooker knob.

[0004] The embodiments of the present application are implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides an induction cooker knob, including a knob support platform and a knob; the surface of the knob support platform that fits with the induction cooker ceramic hob is the first end face, and the knob is rotatably arranged on the second end face of the knob support platform; a convex structure is arranged on the second end face at intervals circumferentially around the rotation axis of the knob; when the knob rotates, the convex structures are all in contact with the knob.

[0006] As an optional implementation manner, the knob includes a circular cover plate and a side surround plate arranged on the circumferential edge of the circular cover plate. The side surround plate and the circular cover plate form a cover-like structure covering the knob support platform, and the annular surface of the cover-like structure close to the induction cooker ceramic hob is preset with a first distance from the surface of the induction cooker ceramic hob.

[0007] As an optional implementation manner, an annular protrusion extending towards the side of the induction cooker ceramic hob is arranged on the annular surface, and the annular protrusion is preset with a second distance from the surface of the induction cooker ceramic hob, and the second distance is smaller than the first distance.

[0008] As an optional embodiment, an opening is provided on the induction cooker microcrystalline plate, and an annular groove is provided on the knob support platform; a sleeve shaft for connecting an encoder is provided on the knob, and the sleeve shaft sequentially passes through the annular groove and the opening in a direction perpendicular to the induction cooker microcrystalline plate, and is connected to the rotating shaft of the encoder; the knob is driven by the sleeve shaft to drive the encoder to rotate and obtain a detection signal; a blocking ring is provided on the inner wall of the annular groove, and a plurality of limiting parts are provided on the knob, which are arranged at intervals in the circumferential direction of the sleeve shaft, and the limiting parts abut against the blocking ring to form a force to block the knob from moving away from the induction cooker microcrystalline plate.

[0009] As an optional implementation, a middle mounting platform is provided on the knob support platform; the middle mounting platform is located in the middle of the annular groove, and a sleeve shaft mounting hole is provided on the middle mounting platform; the sleeve shaft is cooperatively connected with the sleeve shaft mounting hole.

[0010] As an optional implementation, the annular groove is formed between the middle mounting platform and the blocking ring, and the limiting portion is inserted into the annular groove.

[0011] In the second aspect, an embodiment of the present application provides an induction cooker, comprising a shell, an induction cooker microcrystalline board and the above-mentioned induction cooker knob; a control mainboard is arranged in the shell, and the induction cooker knob can control the rotation of an encoder shaft arranged on the control mainboard.

[0012] As an optional embodiment, the induction cooker microcrystalline board is laid on the shell, and a locking connector is provided on the shell. The locking connector passes through an opening on the induction cooker microcrystalline board and is connected to the knob support platform, so that a locking force is generated between the first end face of the knob support platform and the surface of the induction cooker microcrystalline board.

[0013] As an optional implementation, the shell is fitted with a side of the induction cooker microcrystalline board facing away from the induction cooker knob, and an annular waterproof cylinder penetrating the opening and connected to the knob support platform is provided on the fitting surface of the shell and the induction cooker microcrystalline board.

[0014] As an optional embodiment, a waterproof groove arranged circumferentially around the annular waterproof cylinder is provided on the fitting surface between the shell and the induction cooker microcrystalline board, and the waterproof groove is filled with a waterproof adhesive layer to seal the fitting surface and the induction cooker microcrystalline board.

[0015] In a preferred embodiment of the present application, the induction cooker knob includes a knob support platform and a knob; the surface of the knob support platform that fits the induction cooker ceramic plate is the first end face, and the knob is rotatably arranged on the second end face of the knob support platform; the second end face is provided with protruding structures circumferentially spaced around the rotation axis of the knob; when the knob rotates, the protruding structures all contact the knob. The knob includes a circular cover plate and a side enclosure provided on the circumferential edge of the circular cover plate, and the side enclosure and the circular cover plate form a cover-like structure covering the knob support platform, and the annular surface of the cover-like structure close to the induction cooker ceramic plate is preset with a first distance from the surface of the induction cooker ceramic plate. The annular surface is provided with an annular protrusion extending towards the induction cooker ceramic plate, and the annular protrusion is preset with a second distance from the surface of the induction cooker ceramic plate, and the second distance is smaller than the first distance.

[0016] The beneficial effects of the embodiments of the present application include:

[0017] In the first aspect, the embodiments of the present application provide an induction cooker knob, including a knob support platform and a knob; the surface of the knob support platform that fits the induction cooker ceramic plate is the first end face, and the knob is rotatably arranged on the second end face of the knob support platform; the embodiments of the present application are provided with protruding structures circumferentially spaced around the rotation axis of the knob on the second end face; by supporting the knob through the protruding structures, when the knob rotates, the protruding structures all contact the knob, so that the rotation plane where the knob is located is parallel to the plane where the induction cooker ceramic plate is located. Therefore, the embodiments of the present application can support the knob circumferentially through the protruding structures, reduce the shaking amplitude of the knob on the induction cooker ceramic plate, and improve the stability of the induction cooker knob.

[0018] In the second aspect, the embodiments of the present application provide an induction cooker, including a housing, an induction cooker ceramic plate, and the above-mentioned induction cooker knob; a control main board is arranged in the housing, and the induction cooker knob can control the rotation of the encoder shaft arranged on the control main board. The induction cooker provided by the embodiments of the present application adopts the above-mentioned induction cooker knob, which uniformly supports the knob through the protruding structures. When the knob rotates, the protruding structures all contact the knob, so that the rotation plane where the knob is located is parallel to the plane where the induction cooker ceramic plate is located, reduce the shaking amplitude of the knob on the induction cooker ceramic plate, and improve the stability of the induction cooker knob. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 One of the structural schematic diagrams of the induction cooker according to the embodiment of the present application;

[0021] Figure 2 Another structural schematic diagram of the induction cooker according to the embodiment of the present application;

[0022] Figure 3 The third structural schematic diagram of the induction cooker according to the embodiment of the present application;

[0023] Figure 4 The fourth structural schematic diagram of the induction cooker according to the embodiment of the present application;

[0024] Figure 5 One of the structural schematic diagrams of the induction cooker knob according to the embodiment of the present application;

[0025] Figure 6 Another structural schematic diagram of the induction cooker knob according to the embodiment of the present application;

[0026] Figure 7 The third structural schematic diagram of the induction cooker knob according to the embodiment of the present application;

[0027] Figure 8 The fourth structural schematic diagram of the induction cooker knob according to the embodiment of the present application;

[0028] Figure 9 The fifth structural schematic diagram of the induction cooker according to the embodiment of the present application.

[0029] Icon:

[0030] 100 - Induction cooker knob; 101 - Knob support platform; 102 - Knob; 103 - First end face; 104 - Second end face; 105 - Protrusion structure; 106 - Circular cover plate; 107 - Side enclosure plate; 108 - Annular surface; 109 - Annular protrusion; 110 - Induction cooker ceramic glass panel; 111 - Opening; 112 - Annular card slot; 113 - Sleeve shaft; 114 - Encoder; 115 - Blocking ring; 116 - Limiting part; 117 - Middle mounting platform; 118 - Sleeve shaft mounting hole; 119 - Housing; 120 - Control main board; 121 - Annular waterproof cylinder; 122 - Waterproof groove; 123 - Hook. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0032] Accordingly, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0033] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] An induction cooker is a kitchen appliance that uses the principle of electromagnetic induction to heat food. Currently, the knob 100 and the knob 102 bracket of the induction cooker sold on the market are detachably connected. Due to the detachable structure, it is easy to cause loosening at the mating part of the knob 102 and the knob 102 bracket during repeated disassembly, which not only causes problems such as damage to the knob 102 and the knob 102 bracket, but also leads to the problem that the knob 102 shakes greatly on the surface of the induction cooker ceramic glass panel 110, which is not conducive to accurate operation by the user.

[0036] To solve the above technical problems, the embodiments of the present application provide an induction cooker knob 100 and an induction cooker.

[0037] Referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in

[0038] It should be noted that the number of the protruding structures 105 in the embodiment of the present application can be set by those skilled in the art as required, and there is no special limitation on this.

[0039] For example, refer to Figure 5 As shown, there are six protrusion structures 105 arranged circumferentially and spaced apart around the rotation axis of the knob 102 on the second end surface 104 .

[0040] Preferably, the surface of the protrusion structure 105 is a curved surface, for example, the protrusion structure 105 is a hemispherical protrusion or a spherical protrusion.

[0041] The embodiment of the present application enables the raised structure 105 to achieve point-to-surface contact with the surface of the knob 102 through the arc surface of the hemispherical protrusion, which greatly reduces the contact area between the knob 102 and the raised structure 105, helps to reduce the friction resistance generated between the knob 102 and the raised structure 105, and facilitates the rotation adjustment of the knob 102.

[0042] An induction cooker knob 100 provided in an embodiment of the present application comprises a knob support platform 101 and a knob 102; the surface of the knob support platform 101 that is in contact with the induction cooker microcrystalline plate 110 is a first end surface 103, and the knob 102 is rotatably arranged on a second end surface 104 of the knob support platform 101; in the embodiment of the present application, protruding structures 105 arranged circumferentially at intervals around the rotation axis of the knob 102 are arranged on the second end surface 104; the knob 102 is supported by the protruding structures 105, and when the knob 102 rotates, the protruding structures 105 are in contact with the knob 102, so that the rotation plane where the knob 102 is located is parallel to the plane where the induction cooker microcrystalline plate 110 is located. Therefore, the embodiment of the present application can circumferentially support the knob 102 through the protruding structures 105, reduce the shaking amplitude of the knob 102 on the induction cooker microcrystalline plate 110, and improve the stability of the induction cooker knob 100.

[0043] Reference Figure 3 , Figure 6 as well as Figure 7 As shown, as an optional embodiment, the knob 102 includes a circular cover plate 106 and a side panel 107 arranged on the circumferential edge of the circular cover plate 106, the side panel 107 and the circular cover plate 106 form a cover-like structure covering the knob support platform 101, and the cover-like structure is close to the annular surface 108 of the induction cooker microcrystalline plate 110 and a first distance is preset between the surface of the induction cooker microcrystalline plate 110.

[0044] The annular surface 108 is provided with an annular protrusion 109 extending toward one side of the induction cooker microcrystalline plate 110 . A second spacing is preset between the annular protrusion 109 and the surface of the induction cooker microcrystalline plate 110 . The second spacing is smaller than the first spacing.

[0045] It should be noted that a first preset distance is provided between the knob 102 of the embodiment of the present application and the surface of the induction cooker ceramic glass panel 110. Therefore, there is no frictional force between the knob 102 and the surface of the induction cooker ceramic glass panel 110, and an upward supporting force is generated by the protruding structure 105 on the second end face 104. Therefore, the frictional force of the knob 102 in the embodiment of the present application is relatively small during the rotation process.

[0046] Furthermore, in the embodiment of the present application, an annular protrusion 109 is provided on the annular surface 108, and the annular protrusion 109 extends towards the induction cooker ceramic glass panel 110 to form a second preset distance. That is to say, the embodiment of the present application can make the lower annular surface 108 of the knob 102 close to the induction cooker ceramic glass panel 110, but still a preset distance is maintained and no direct friction will occur. Among them, when the knob 102 generates an offset in the direction perpendicular to the induction cooker ceramic glass panel 110, by reducing the first distance, the offset distance of the knob 102 is reduced, thereby realizing the limitation of the shaking amplitude.

[0047] Referring to Figure 3 , Figure 4 and Figure 8 As shown, as an alternative embodiment, an opening 111 is provided on the induction cooker ceramic glass panel 110, and an annular card slot 112 is provided on the knob support platform 101; a sleeve shaft 113 for connecting the encoder 114 is provided on the knob 102, and the sleeve shaft 113 sequentially penetrates through the annular card slot 112 and the opening 111 in the direction perpendicular to the induction cooker ceramic glass panel 110 and then is connected to the rotating shaft of the encoder 114; the knob 102 is driven to drive the encoder 114 to rotate through the sleeve shaft 113 and a detection signal is obtained; a blocking ring 115 is provided on the inner wall of the annular card slot 112, and a plurality of limiting parts 116 are arranged on the knob 102 at intervals in the circumferential direction around the sleeve shaft 113, and the limiting parts 116 are in contact with the blocking ring 115 to form a force for blocking the knob 102 from moving away from the induction cooker ceramic glass panel 110.

[0048] Compared with the prior art, in the embodiment of the present application, the limiting part 116 is inserted into the annular card slot 112, so that the limiting part 116 is in contact with the blocking ring 115 to form a force for blocking the induction cooker knob 100 from coming off. The embodiment of the present application can reliably install the knob 102, prevent the knob 102 from loosening and falling off, and can effectively improve the use reliability of the induction cooker knob 100.

[0049] Furthermore, referring to Figure 6 As shown, the limiting part 116 includes a hook 123; the blocking ring 115 protrudes radially along the sleeve shaft 113 and forms a hanging surface parallel to the induction cooker ceramic glass panel 110; when the sleeve shaft 113 moves close to the encoder 114, the hook 123 is inserted into the annular card slot 112 until the hook 123 contacts the hanging surface and stops moving, forming a force for blocking the knob 102 from moving axially along the sleeve shaft 113.

[0050] The limiting part 116 abuts against the inner wall annular surface of the annular clamping groove 112, forming a force that blocks the radial movement of the knob 102 along the sleeve shaft 113.

[0051] It should be noted that after the limiting part 116 of the embodiment of the present application is inserted into the annular clamping groove 112, when the user operates the knob 102 to rotate, the hook 123 can rotate synchronously in the annular clamping groove 112. The part of the hook 123 extending along the axial direction contacts the inner wall annular surface of the annular clamping groove 112, preventing the knob 102 from shaking radially on the knob support platform 101.

[0052] Refer to Figure 3 and Figure 8 As shown, as an optional implementation manner, a middle mounting platform 117 is provided on the knob support platform 101; the middle mounting platform 117 is located in the middle of the annular clamping groove 112, and a sleeve shaft mounting hole 118 is provided on the middle mounting platform 117; the sleeve shaft 113 is connected with the sleeve shaft mounting hole 118 in a matching manner.

[0053] Among them, an annular clamping groove 112 is formed between the middle mounting platform 117 and the blocking ring 115, and the limiting part 116 is inserted into the annular clamping groove 112.

[0054] In the embodiment of the present application, a middle mounting platform 117 is provided in the middle of the knob support platform 101, and the knob 102 is installed downward so that the sleeve shaft 113 is sleeved on the rotating shaft of the encoder 114. At this time, the inner wall of the sleeve shaft 113 contacts the rotating shaft of the encoder 114, and the outer wall of the sleeve shaft 113 is connected with the sleeve shaft mounting hole 118.

[0055] It should be noted that due to the tolerance of the shaft hole fit between the rotating shaft of the encoder 114 and the sleeve shaft 113, and the force arm generated by the rotating shaft in the radial direction, the problem of shaking will occur after the knob 102 is assembled.

[0056] In the embodiment of the present application, the knob support platform 101 is fixedly arranged on the surface of the electromagnetic furnace ceramic plate 110, and the top surface supports the knob 102, that is, the top surface of the knob support platform 101 fits with the knob 102. In addition, through the radial limit of the hook 123, the shaking amplitude of the knob 102 in the radial direction can be effectively reduced. Further, in the embodiment of the present application, through the shaft hole fit between the sleeve shaft mounting hole 118 and the sleeve shaft 113, the knob 102 can rotate stably around the rotation axis, avoiding radial shaking on the surface of the electromagnetic furnace ceramic plate 110.

[0057] Refer to Figure 1 , Figure 2 and Figure 4As shown, an embodiment of the present application provides an induction cooker, including a shell 119, an induction cooker microcrystalline plate 110 and the above-mentioned induction cooker knob 100; a control mainboard 120 is arranged in the shell 119, and the induction cooker knob 100 can control the rotation of the rotating shaft of the encoder 114 arranged on the control mainboard 120.

[0058] It should be noted that the encoder 114 can be used to control the output power during the operation of the induction cooker to achieve stepless regulation. The button-type regulation used in the prior art usually provides a button for increasing the output power and a button for reducing the output power. By pressing one of the buttons, the output power is reduced or increased by a fixed value. Therefore, the prior art cannot achieve stepless regulation. The embodiment of the present application achieves stepless regulation by means of a knob and an encoder, and the adjustment process is more delicate, so that the user can adjust the output power parameter size as desired according to the needs.

[0059] The induction cooker provided in the embodiment of the present application adopts the above-mentioned induction cooker knob 100, which evenly supports the knob 102 through the protruding structure 105. When the knob 102 rotates, the protruding structure 105 contacts the knob 102, so that the rotation plane where the knob 102 is located is parallel to the plane where the induction cooker microcrystalline plate 110 is located, thereby reducing the shaking amplitude of the knob 102 on the induction cooker microcrystalline plate 110 and improving the stability of the induction cooker knob 100.

[0060] The embodiment of the present application uses a locking connector to make the first end face 103 of the knob support platform 101 fit tightly with the surface of the induction cooker microcrystalline board 110, preventing domestic water from entering the induction cooker knob 100, which can help the contact surface between the knob support platform 101 and the induction cooker microcrystalline board 110 achieve the first level of waterproofing.

[0061] The locking connector includes at least two connecting bolts disposed in the annular waterproof tube 121 .

[0062] Exemplarily, three connecting bolts extending in the axial direction are disposed in the annular waterproof cylinder 121 , and the connecting bolts pass through the openings 111 and are connected to threaded holes disposed on the knob support platform 101 .

[0063] Reference Figure 3 as well as Figure 9 As shown, as an optional embodiment, the shell 119 is bonded to the side of the induction cooker microcrystalline board 110 facing away from the induction cooker knob 100, and an annular waterproof tube 121 is provided on the bonding surface of the shell 119 and the induction cooker microcrystalline board 110, which penetrates the opening 111 and is connected to the knob support platform 101.

[0064] On the joint surface between the housing 119 and the induction cooker ceramic glass panel 110, there is a waterproof groove 122 arranged circumferentially around the annular waterproof cylinder 121. The waterproof groove 122 is filled with a waterproof adhesive layer, so that the joint surface is hermetically connected to the induction cooker ceramic glass panel 110.

[0065] Furthermore, in the embodiment of the present application, the waterproof groove 122 is arranged circumferentially on the annular waterproof cylinder 121, and a waterproof adhesive layer is provided in the waterproof groove 122, so that the joint surface between the housing 119 and the induction cooker ceramic glass panel 110 is hermetically waterproofed, achieving a second level of waterproofing and effectively preventing domestic water from entering the interior of the induction cooker. It should be noted that multiple waterproof grooves 122 can be provided. Exemplarily, two or three concentric waterproof grooves 122 are sleeved on the circumference of the annular waterproof cylinder 121.

[0066] It should be noted that the waterproof adhesive layer can be a silicone adhesive layer or other types of waterproof adhesives, and no special limitation is made thereto. Those skilled in the art can select according to needs.

[0067] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An induction cooker knob (100), characterized in that: The invention comprises a knob support platform (101) and a knob (102); the surface of the knob support platform (101) that is in contact with an induction cooker microcrystalline plate (110) is a first end surface (103); the knob (102) is rotatably arranged on a second end surface (104) of the knob support platform (101); the second end surface (104) is provided with protruding structures (105) that are circumferentially spaced around a rotation axis of the knob (102); when the knob (102) is rotated, the protruding structures (105) are in contact with the knob (102).

2. The induction cooker knob (100) according to claim 1, characterized in that: The knob (102) comprises a circular cover plate (106) and a side panel (107) arranged on the circumferential edge of the circular cover plate (106); the side panel (107) and the circular cover plate (106) form a cover-like structure covering the knob support platform (101); the cover-like structure is close to the annular surface (108) of the induction cooker microcrystalline plate (110) and has a preset first spacing from the surface of the induction cooker microcrystalline plate (110).

3. The induction cooker knob (100) according to claim 2, characterized in that: The annular surface (108) is provided with an annular protrusion (109) extending toward one side of the induction cooker microcrystalline plate (110), and a second spacing is preset between the annular protrusion (109) and the surface of the induction cooker microcrystalline plate (110), and the second spacing is smaller than the first spacing.

4. The induction cooker knob (100) according to claim 1, characterized in that: The induction cooker microcrystalline plate (110) is provided with an opening (111), and the knob support platform (101) is provided with an annular groove (112); the knob (102) is provided with a sleeve shaft (113) for connecting with an encoder (114); the sleeve shaft (113) sequentially penetrates the annular groove (112) and the opening (111) in a direction perpendicular to the induction cooker microcrystalline plate (110) and is then connected to the rotating shaft of the encoder (114); the knob (102) is provided with a sleeve shaft (113) for connecting with an encoder (114); 02) is driven by the sleeve shaft (113) to drive the encoder (114) to rotate and obtain a detection signal; the inner wall of the annular groove (112) is provided with a blocking ring (115), and the knob (102) is provided with a plurality of limiting portions (116) arranged at intervals in the circumferential direction around the sleeve shaft (113), and the limiting portions (116) abut against the blocking ring (115) to form a force that blocks the knob (102) from moving away from the induction cooker microcrystalline plate (110).

5. The induction cooker knob (100) according to claim 4, characterized in that: The knob support platform (101) is provided with a middle mounting platform (117); the middle mounting platform (117) is located in the middle of the annular groove (112); a sleeve shaft mounting hole (118) is provided on the middle mounting platform (117); the sleeve shaft (113) is matched and connected with the sleeve shaft mounting hole (118).

6. The induction cooker knob (100) according to claim 5, characterized in that: The annular groove (112) is formed between the middle mounting platform (117) and the blocking ring (115), and the limiting portion (116) is inserted into the annular groove (112).

7. An induction cooker, characterized in that: The invention comprises a shell (119), an induction cooker microcrystalline plate (110), and an induction cooker knob (100) as claimed in any one of claims 1 to 6; a control mainboard (120) is arranged in the shell (119), and the induction cooker knob (100) can control the rotation of a shaft of an encoder (114) arranged on the control mainboard (120).

8. The induction cooker according to claim 7, characterized in that: The induction cooker microcrystalline plate (110) is laid on the shell (119), and a locking connector is provided on the shell (119). The locking connector passes through an opening (111) on the induction cooker microcrystalline plate (110) and is connected to the knob support platform (101), so that a locking force is generated between the first end surface (103) of the knob support platform (101) and the surface of the induction cooker microcrystalline plate (110).

9. The induction cooker according to claim 8, characterized in that: The shell (119) is bonded to a side of the induction cooker microcrystalline plate (110) facing away from the induction cooker knob (100), and an annular waterproof cylinder (121) penetrating the opening (111) and connected to the knob support platform (101) is provided on the bonding surface of the shell (119) and the induction cooker microcrystalline plate (110).

10. The induction cooker according to claim 9, characterized in that: A waterproof groove (122) arranged circumferentially around the annular waterproof cylinder (121) is provided on the fitting surface between the shell (119) and the induction cooker microcrystalline plate (110), and the waterproof groove (122) is filled with a waterproof adhesive layer so that the fitting surface and the induction cooker microcrystalline plate (110) are sealed and connected.

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