Heating knob device and microwave oven

Abstract

The invention discloses a heating knob device and a microwave oven, and relates to the technical field of electric appliances. The timing knob comprises a timing knob assembly, a limiting knob and a limiting elastic assembly, the timing knob assembly comprises a timing rotary switch, and a rotation stopping clamping hook is arranged on the outer side face of the timing rotary switch. The limiting knob is arranged on the outer edge of the timing rotary switch in a sleeving mode and movably connected with a panel of the microwave oven, and a first through hole is formed in the limiting knob. The limiting elastic assembly is embedded in the first through hole and comprises an elastic clamping hook unit arranged in the radial direction of the timing rotary switch. The elastic clamping hook unit is connected with a limiting groove formed in the panel in a clamped mode when no external pressure exists, and the rotation stopping clamping hook is limited so that the heating duration can be limited. Due to the fact that the heating duration is uncertain, when a specific user who cannot accurately distinguish the knob duration heats food, the timing rotary switch is screwed until the timing rotary switch cannot rotate, the hand is released, and then the food can be cooked normally. Therefore, the food heating difficulty is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electrical appliances, in particular to a heating knob device and a microwave oven. Background Art

[0002] A microwave oven is a cooking appliance that heats food with microwaves. It is very popular in our daily life. Due to its convenience and efficiency in heating food, it greatly improves the user's life experience. In current microwave ovens, users generally heat food by turning the corresponding heating time according to the heating power (or heating gear).

[0003] However, some special users, such as the elderly, the disabled and children, are unsure of the heating time and cannot accurately distinguish the time of the knob. They are unable to turn the knob to the appropriate heating time while using the microwave oven, which makes it more difficult for them to heat the food. Summary of the invention

[0004] In view of the problem that it is difficult for certain users to heat food in a microwave oven because they are uncertain about the heating time and cannot accurately distinguish the time for turning the knob, the present invention is proposed to provide a heating knob device and a microwave oven that overcome the above problem or at least partially solve the above problem.

[0005] Based on the first aspect of the present invention, a heating knob device is provided, the heating knob device comprising:

[0006] A timing knob assembly, the timing knob assembly comprising a timing rotary switch, and a rotation-stop hook is arranged on the outer side surface of the timing rotary switch;

[0007] A limit knob, which is sleeved on the outer surface of the timing rotary switch and movably connected to the panel of the microwave oven, wherein a first through hole is formed on the limit knob;

[0008] A position-limiting elastic component, wherein the position-limiting elastic component is embedded in the first through hole, wherein the position-limiting elastic component comprises an elastic hook unit arranged along the radial direction of the timing rotary switch; and

[0009] When there is no external pressure acting on the elastic hook unit, the elastic hook unit is engaged with the limiting groove provided in the panel and limits the anti-rotation hook to limit the heating time of the timing knob assembly.

[0010] An optional invention content, the limiting elastic component also includes a button, which is embedded in the first through hole along the axial direction of the limiting knob and abuts against the elastic hook unit to generate external pressure on the elastic hook unit by pressing the button.

[0011] In an optional invention, the elastic hook unit includes a first elastic hook and a second elastic hook, and the first elastic hook and the second elastic hook are respectively rotatably connected with the limit knob; wherein,

[0012] The first elastic hook is in contact with the button and is extended inwardly along the radial direction of the limit knob to extend to the outer edge of the timing rotary switch to limit the anti-rotation hook;

[0013] The second elastic hook is in contact with the button and is extended outwardly along the radial direction of the limiting knob to extend to the inner edge of the panel and form a locking connection with the limiting groove.

[0014] In an optional invention, the first elastic hook includes:

[0015] a first elastic arm, the first elastic arm abutting against the button and the panel respectively;

[0016] A first hook portion, wherein the first hook portion and the first elastic arm are arranged at an angle, and the first hook portion is extended in the direction of the timing rotary switch; wherein

[0017] The connection between the first elastic arm and the first hook portion is rotatably connected to the limit knob. When the button is pressed, the first elastic arm is deformed under the action of the pressing force, driving the first hook portion to rotate away from the timing rotary switch to release the limitation on the anti-rotation hook.

[0018] An optional invention content, the limiting elastic component also includes two fixed pins, one of the fixed pins rotationally connects the first elastic hook to the limiting knob, and the other fixed pin rotationally connects the second elastic hook to the limiting knob.

[0019] An optional invention content is that a first deformation cavity is opened in the first elastic arm, and the first deformation cavity is deformed under the action of pressing force of the first elastic arm.

[0020] An optional invention content is that an extension cavity is opened in the key, and a part of the first elastic arm extends into the extension cavity.

[0021] In an optional invention, the second elastic hook includes:

[0022] a second elastic arm, the second elastic arm abutting against the button and the panel respectively;

[0023] A second hook portion, wherein the second hook portion and the second elastic arm are arranged at an angle, and the second hook portion is extended toward the panel; wherein

[0024] The connection between the second elastic arm and the second hook portion is rotatably connected to the limit knob. When the button is pressed, the second elastic arm is deformed under the action of the pressing force, driving the second hook portion to rotate away from the panel to release the locking relationship with the limit groove.

[0025] An optional invention content is that a second deformation cavity is opened in the second elastic arm, and the second deformation cavity is deformed under the action of pressing force of the second elastic arm.

[0026] An optional invention content is that an extension cavity is opened in the key, and a part of the second elastic arm extends into the extension cavity.

[0027] In an optional invention, a first mounting hole and a second mounting hole are formed in the limit knob, and the first mounting hole and the second mounting hole are respectively connected to the first through hole; wherein,

[0028] The first mounting hole has a first opening toward the timing rotary switch, and the second mounting hole has a second opening toward the limiting groove. When there is no external pressure, one end of the elastic hook unit extends outward from the first opening to form a rotation limit for the anti-rotation hook, and the other end of the elastic hook unit extends outward from the second opening to form a snap connection with the limiting groove.

[0029] Based on the second aspect of the present invention, a microwave oven is further provided, comprising a heating knob device as described in any one of the above inventions.

[0030] Compared with the prior art, the present invention includes a timing knob assembly, a limit knob and a limit elastic assembly, wherein the timing knob assembly includes a timing rotary switch, and a stop hook is arranged on the outer surface of the timing rotary switch. The limit knob is sleeved on the outer surface of the timing rotary switch and is movably connected to the panel of the microwave oven, wherein a first through hole is provided on the limit knob. The limit elastic assembly is embedded in the first through hole, wherein the limit elastic assembly includes an elastic hook unit arranged along the radial direction of the timing rotary switch. Moreover, when there is no external pressure on the elastic hook unit, the elastic hook unit forms a clamping connection with the limit groove provided in the panel, and forms a limit on the stop hook to limit the heating time of the timing knob assembly. Thus, a normal user can first press the limit elastic assembly, so that the elastic hook unit releases the clamping relationship with the limit groove, thereby manually rotating the limit knob to the required heating time, and releasing the pressing of the limit elastic assembly. At this time, the limit elastic component is engaged with the limit groove corresponding to the heating time. Therefore, when a specific user who is uncertain about the heating time and cannot accurately distinguish the time of the knob is heating food, he or she can turn the timing rotary switch until it cannot be rotated and then let go, and the food can be cooked normally. This greatly reduces the difficulty of heating food for specific users who are uncertain about the heating time and cannot accurately distinguish the time of the knob, and helps to improve the self-care ability of such users.

[0031] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0033] In the attached picture:

[0034] Figure 1 It is a three-dimensional structural schematic diagram of a heating knob device provided by an embodiment of the present invention, which is assembled on a microwave oven;

[0035] Figure 2 It is a schematic diagram of an exploded structure of a heating knob device provided by an embodiment of the present invention;

[0036] Figure 3 is a schematic cross-sectional structural diagram of a heating knob device provided by an embodiment of the present invention;

[0037] Figure 4 is a schematic diagram of a first cross-sectional structure of a heating knob device provided by an embodiment of the present invention;

[0038] Figure 5 It is a three-dimensional structural schematic diagram of a timing rotary switch provided by an embodiment of the present invention;

[0039] Figure 6 is a schematic diagram of a three-dimensional structure of a limit knob provided by an embodiment of the present invention;

[0040] Figure 7 is a second cross-sectional structural schematic diagram of a heating knob device provided by an embodiment of the present invention;

[0041] Figure 8 yes Figure 7 A schematic diagram of the structure enlargement at the center A;

[0042] Fig. 9 is a third cross-sectional structural schematic diagram of a heating knob device provided by an embodiment of the present invention;

[0043] Fig.10 is a fourth cross-sectional structural schematic diagram of a heating knob device provided by an embodiment of the present invention;

[0044] Figure markings: 1. timed rotary switch; 11. anti-rotation hook; 2. limit knob; 201. first through hole; 202. first mounting hole; 203. second mounting hole; 3. limit elastic component; 31. elastic hook unit; 311. first elastic hook; 3111. first elastic arm; 311101. first deformation cavity; 3112. first hook part; 312. second elastic hook; 3121. second elastic arm; 3122. second hook part; 312101. second deformation cavity; 32. button; 3201. extension cavity; 33. fixing pin shaft; 4. panel; 401. limit groove. DETAILED DESCRIPTION

[0045] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0046] A microwave oven is a cooking appliance that heats food with microwaves. It is very popular in our daily life. Due to its convenience and efficiency in heating food, it greatly improves the user's life experience. In current microwave ovens, users generally heat food by turning the corresponding heating time according to the heating power (or heating gear).

[0047] However, some special users, such as the elderly, the disabled and children, are unsure of the heating time and cannot accurately distinguish the time of the knob. They are unable to turn the knob to the appropriate heating time while using the microwave oven, which makes it more difficult for them to heat the food.

[0048] Based on the above technical problems, an embodiment of the present invention is proposed. The embodiment of the present invention may include a timing knob assembly, a limit knob 2 and a limit elastic assembly 3, wherein the timing knob assembly includes a timing rotary switch 1, and a stop hook 11 is provided on the outer surface of the timing rotary switch 1. The limit knob 2 is sleeved on the outer surface of the timing rotary switch 1 and is movably connected to the panel 4 of the microwave oven, wherein a first through hole 201 is provided on the limit knob 2. The limit elastic assembly 3 is embedded in the first through hole 201, wherein the limit elastic assembly 3 includes an elastic hook unit 31 provided along the radial direction of the timing rotary switch 1. Moreover, when there is no external pressure, the elastic hook unit 31 is engaged with the limit groove 401 provided in the panel 4, and the stop hook 11 is limited to limit the heating time of the timing knob assembly. Therefore, a normal user can first press the limit elastic component 3 so that the elastic hook unit 31 releases the engagement relationship with the limit slot 401, thereby manually rotating the limit knob 2 to the desired heating duration, and releasing the pressure on the limit elastic component 3. At this time, the limit elastic component 3 is engaged with the limit slot 401 corresponding to the heating duration. Therefore, when a specific user who cannot accurately distinguish the duration of the knob due to uncertainty in the heating duration heats food, he or she can turn the timing rotary switch 1 until it cannot be rotated and then let go, and the food can be cooked normally. This greatly reduces the difficulty of heating food for specific users who cannot accurately distinguish the duration of the knob due to uncertainty in the heating duration, and helps to improve the self-care ability of such users.

[0049] Reference Figure 1-10The embodiment of the present invention provides a heating knob device, which may include a timing knob assembly, a limit knob 2 and a limit elastic assembly 3, wherein the timing knob assembly includes a timing rotary switch 1, and a stop hook 11 is provided on the outer surface of the timing rotary switch 1. The limit knob 2 is sleeved on the outer surface of the timing rotary switch 1 and is movably connected to the panel 4 of the microwave oven, wherein a first through hole 201 is provided on the limit knob 2. The limit elastic assembly 3 is embedded in the first through hole 201, wherein the limit elastic assembly 3 includes an elastic hook unit 31 provided along the radial direction of the timing rotary switch 1. Moreover, when there is no external pressure, the elastic hook unit 31 is engaged with the limit groove 401 provided in the panel 4, and the stop hook 11 is limited to limit the heating time of the timing knob assembly.

[0050] In an embodiment of the present invention, the heating knob device may include a timing knob assembly, a limit knob 2, and a limit elastic assembly 3. The timing knob assembly is used for the heating timing of the microwave oven, and the timing knob assembly includes a timing rotary switch 1. For example, the timing knob assembly may be embedded in the panel 4 of the microwave oven. Correspondingly, the duration mark on the panel 4 may be distributed in a circle and concentrically arranged with the timing rotary switch 1. In other words, the duration marks are distributed at equal angles around the center of the timing rotary switch 1. Thus, the heating duration of the microwave oven can be determined by rotating the timing rotary switch 1 to the corresponding duration mark. A stop hook 11 is arranged on the outer surface of the timing rotary switch 1. In other words, the stop hook 11 is distributed along the radial direction of the timing rotary switch 1.

[0051] The limit knob 2 is sleeved on the outer surface of the timing rotary switch 1 and is movably connected to the panel 4. For example, the limit knob 2 can rotate on the panel 4. In other words, the limit knob 2 and the timing rotary switch 1 can be concentrically arranged and can rotate separately. The limit knob 2 is provided with a first through hole 201, and the first through hole 201 is eccentrically arranged.

[0052] The limit elastic component 3 is embedded in the first through hole 201, and the limit elastic component 3 may include an elastic hook unit 31 arranged along the radial direction of the timing rotary switch 1. Correspondingly, a plurality of limit grooves 401 are provided in the area of ​​the panel 4 close to the limit knob 2, wherein the limit grooves 401 are adapted to the time length mark position, and the plurality of limit grooves 401 are distributed at equal angles around the center of the limit rotation. In the absence of external pressure, the elastic hook unit 31 extends to the inner and outer sides of the limit knob 2 along the radial direction of the limit knob 2, respectively. The elastic hook unit 31 is connected with the limit groove 401 on the radial outer side of the limit knob 2, thereby locking the limit knob 2 so that it cannot rotate.

[0053] The elastic hook unit 31 forms a limit on the anti-rotation hook 11 on the radial inner side of the limit knob 2. The limit here can be understood as limiting the rotation angle range of the anti-rotation hook 11. For example, when the user rotates the timed rotary switch 1 and rotates until the anti-rotation hook 11 abuts against the elastic hook unit 31, the timed rotary switch 1 cannot continue to rotate in the same direction due to the abutment force of the elastic hook unit 31 on the anti-rotation hook 11.

[0054] Under the action of external pressure, the two ends of the elastic hook unit 31 approach each other along the radial direction of the limit knob 2, that is, the elastic hook unit 31 is embedded in the limit knob 2. At this time, the elastic hook unit 31 is unlocked from the limit groove 401 on the radial outer side of the limit knob 2, and the limit knob 2 can be rotated at will. Correspondingly, the elastic hook unit 31 releases the limit of the anti-rotation hook 11 on the radial inner side of the limit knob 2, so that the timing rotary switch 1 can also be rotated to the corresponding heating time.

[0055] During the use of the heating knob device, a normal user can first press the limit elastic component 3 to apply external pressure to the elastic hook unit 31, so that the elastic hook unit 31 releases the clamping relationship with the limit slot 401, thereby manually rotating the limit knob 2 to the required heating time, and releasing the pressure on the limit elastic component 3. At this time, the limit elastic component 3 is clamped with the limit slot 401 corresponding to the heating time. Therefore, when heating food for special users who cannot accurately distinguish the time of the knob due to uncertainty of the heating time, they can turn the timing rotary switch 1 until it cannot be rotated and then let go, and the food can be cooked normally. This greatly reduces the difficulty of heating food for special users who cannot accurately distinguish the time of the knob due to uncertainty of the heating time, and helps to improve the self-care ability of such users.

[0056] An optional embodiment of the invention, referring to Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.10 As shown, the limit elastic component 3 also includes a button 32, which is embedded in the first through hole 201 along the axial direction of the limit knob 2 and abuts against the elastic hook unit 31 to generate external pressure on the elastic hook unit 31 by pressing the button 32.

[0057] In the embodiment of the present invention, the limit elastic component 3 further includes a button 32, and the button 32 is embedded in the first through hole 201 along the axial direction of the limit knob 2. For example, a portion of the button 32 is extended from the first through hole 201 to the outside of the first through hole 201, forming a protrusion protruding from the upper end surface of the limit knob 2, so that the user can press the button 32 through the protruding button 32, and the end of the button 32 located in the first through hole 201 is in contact with the elastic hook unit 31. The part of the elastic hook unit 31 away from the button 32 can be in contact with the panel 4. Therefore, when the user presses the button 32, the elastic hook unit 31 is in contact with the button 32, and an external pressure is generated on the elastic hook unit 31 through the contact relationship between the button 32 and the elastic hook unit 31.

[0058] In some embodiments, when the button 32 applies external pressure to the elastic hook unit 31, the elastic hook unit 31 is elastically deformed under the pressure of the button 32 and the panel 4, and the two ends of the elastic hook unit 31 approach each other along the radial direction of the limit knob 2, that is, the elastic hook unit 31 is embedded in the limit knob 2. At this time, the elastic hook unit 31 is unlocked from the limit groove 401 on the radial outer side of the limit knob 2, and the limit knob 2 can be rotated at will. Correspondingly, the elastic hook unit 31 releases the limit of the anti-rotation hook 11 on the radial inner side of the limit knob 2, so that the timing rotary switch 1 can also be rotated to the corresponding heating time.

[0059] In other embodiments, when the pressing force on the button 32 is released, the elastic hook unit 31 recovers elastically, and the two ends of the elastic hook unit 31 extend outside the limit knob 2 respectively. The elastic hook unit 31 forms a limit on the anti-rotation hook 11 on the radial inner side of the limit knob 2. The limit here can be understood as limiting the rotation angle range of the anti-rotation hook 11. For example, when the user turns the timed rotary switch 1, when the anti-rotation hook 11 abuts against the elastic hook unit 31, the timed rotary switch 1 cannot continue to rotate in the same direction due to the abutment force of the elastic hook unit 31 on the anti-rotation hook 11.

[0060] An optional embodiment of the invention, referring to Figure 2 , Figure 3 as well as Figure 4 As shown, the heating knob device may include a timing knob assembly, a limit knob 2 and a limit elastic assembly 3, wherein the timing knob assembly includes a timing rotary switch 1, and a stop hook 11 is provided on the outer surface of the timing rotary switch 1. The limit knob 2 is sleeved on the outer surface of the timing rotary switch 1 and is movably connected to the panel 4 of the microwave oven, wherein a first through hole 201 is provided on the limit knob 2. The limit elastic assembly 3 is embedded in the first through hole 201, wherein the limit elastic assembly 3 includes an elastic hook unit 31 provided along the radial direction of the timing rotary switch 1. The elastic hook unit 31 includes a first elastic hook 311 and a second elastic hook 312, and the first elastic hook 311 and the second elastic hook 312 are respectively connected to the limit knob 2 in rotation. The first elastic hook 311 abuts against the button 32 and extends radially inwardly of the limit knob 2 to extend to the outer edge of the timing rotary switch 1 to limit the rotation-stop hook 11 and limit the heating time of the timing knob assembly. The second elastic hook 312 abuts against the button 32 and extends radially outwardly of the limit knob 2 to extend to the inner edge of the panel 4 and form a snap connection with the limit groove 401.

[0061] In an embodiment of the present invention, the heating knob device may include a timing knob assembly, a limit knob 2, and a limit elastic assembly 3. The timing knob assembly is used for the heating timing of the microwave oven, and the timing knob assembly includes a timing rotary switch 1. For example, the timing knob assembly may be embedded in the panel 4 of the microwave oven. Correspondingly, the duration mark on the panel 4 may be distributed in a circle and concentrically arranged with the timing rotary switch 1. In other words, the duration marks are distributed at equal angles around the center of the timing rotary switch 1. Thus, the heating duration of the microwave oven can be determined by rotating the timing rotary switch 1 to the corresponding duration mark. A stop hook 11 is arranged on the outer surface of the timing rotary switch 1. In other words, the stop hook 11 is distributed along the radial direction of the timing rotary switch 1.

[0062] The limit knob 2 is sleeved on the outer surface of the timing rotary switch 1 and is movably connected to the panel 4. For example, the limit knob 2 can rotate on the panel 4. In other words, the limit knob 2 and the timing rotary switch 1 can be concentrically arranged and can rotate separately. The limit knob 2 is provided with a first through hole 201, and the first through hole 201 is eccentrically arranged.

[0063] The limit elastic component 3 is embedded in the first through hole 201, and the limit elastic component 3 may include an elastic hook unit 31 arranged along the radial direction of the timing rotary switch 1. Correspondingly, a plurality of limit grooves 401 are provided in the area of ​​the panel 4 close to the limit knob 2, wherein the limit grooves 401 are adapted to the time length mark position, and the plurality of limit grooves 401 are distributed at equal angles around the center of the limit rotation. In the absence of external pressure, the elastic hook unit 31 extends to the inner and outer sides of the limit knob 2 along the radial direction of the limit knob 2, respectively. The elastic hook unit 31 is connected with the limit groove 401 on the radial outer side of the limit knob 2, thereby locking the limit knob 2 so that it cannot rotate.

[0064] The elastic hook unit 31 forms a limit on the anti-rotation hook 11 on the radial inner side of the limit knob 2. The limit here can be understood as limiting the rotation angle range of the anti-rotation hook 11. For example, when the user rotates the timed rotary switch 1 and rotates until the anti-rotation hook 11 abuts against the elastic hook unit 31, the timed rotary switch 1 cannot continue to rotate in the same direction due to the abutment force of the elastic hook unit 31 on the anti-rotation hook 11.

[0065] Under the action of external pressure, the two ends of the elastic hook unit 31 approach each other along the radial direction of the limit knob 2, that is, the elastic hook unit 31 is embedded in the limit knob 2. At this time, the elastic hook unit 31 is unlocked from the limit groove 401 on the radial outer side of the limit knob 2, and the limit knob 2 can be rotated at will. Correspondingly, the elastic hook unit 31 releases the limit of the anti-rotation hook 11 on the radial inner side of the limit knob 2, so that the timing rotary switch 1 can also be rotated to the corresponding heating time.

[0066] Specifically, the elastic hook unit 31 may include a first elastic hook 311 and a second elastic hook 312, and the first elastic hook 311 and the second elastic hook 312 are spaced apart along the radial direction of the limit knob 2, wherein the first elastic hook 311 is rotationally connected to the limit knob 2, and the second elastic hook 312 is rotationally connected to the limit knob 2. The limit elastic component 3 may also include two fixed pins 33, and the first elastic hook 311 and the limit knob 2 may be rotationally connected through one of the fixed pins 33, and the second elastic hook 312 and the limit knob 2 may also be rotationally connected through another fixed pin 33. The first elastic hook 311 abuts against the button 32, and the second elastic hook 312 abuts against the button 32.

[0067] When there is no external pressure on the button 32, the button 32 is limited in the first through hole 201 by the abutment between the first elastic hook 311 and the second elastic hook 312. The corresponding button 32 may also be provided with a protrusion, or the limit knob 2 may also be provided with a connecting groove, so that the axial movement stroke of the button 32 is limited by the shape matching between the protrusion and the connecting groove. At the same time, under the abutment of the button 32 and the panel 4, the first elastic hook 311 is away from the end of the second elastic hook 312 and extends to the radial inner side of the limit knob 2, thereby limiting the rotation angle range of the timing rotary switch 1. Under the abutment of the button 32 and the panel 4, the second elastic hook 312 is away from the end of the first elastic hook 311 and extends to the radial outer side of the limit knob 2, thereby extending to the outside of the limit knob 2, and forming a snap fit with the limit groove 401 provided on the panel 4.

[0068] When the user presses the button 32, the contact force of the button 32 on the first elastic hook 311 is increased, and the contact force of the button 32 on the second elastic hook 312 is increased. Therefore, the first elastic hook 311 is deformed toward the panel 4 under the contact force of the button 32, and the first elastic hook 311 is close to the end of the timing rotary switch 1, and rotates around the fixed pin 33 to enter the limit knob 2 under the deformation force. Thus, the limit of the anti-rotation hook 11 is released, so that the timing rotary switch 1 can be rotated to the corresponding heating time at will.

[0069] The second elastic hook 312 is deformed toward the panel 4 under the abutting force of the button 32. The second elastic hook 312 is close to the end of the timing rotary switch 1, and under the deformation force, it enters the limit knob 2 around the fixing pin 33. Thus, the second elastic hook 312 is unlocked from the limit groove 401 on the radial outer side of the limit knob 2, and the limit knob 2 can be rotated at will.

[0070] During the use of the heating knob device, a normal user can first press the limit elastic component 3 to apply external pressure to the elastic hook unit 31, so that the elastic hook unit 31 releases the clamping relationship with the limit slot 401, thereby manually rotating the limit knob 2 to the required heating time, and releasing the pressure on the limit elastic component 3. At this time, the limit elastic component 3 is clamped with the limit slot 401 corresponding to the heating time. Therefore, when heating food for special users who cannot accurately distinguish the time of the knob due to uncertainty of the heating time, they can turn the timing rotary switch 1 until it cannot be rotated and then let go, and the food can be cooked normally. This greatly reduces the difficulty of heating food for special users who cannot accurately distinguish the time of the knob due to uncertainty of the heating time, and helps to improve the self-care ability of such users.

[0071] An optional embodiment of the invention, referring to Figure 3 and Figure 4As shown, the first elastic hook 311 may include a first elastic arm 3111 and a first hook portion 3112, and the first elastic arm 3111 is respectively in contact with the button 32 and the panel 4. The first hook portion 3112 is arranged at an angle with the first elastic arm 3111, and the first hook portion 3112 is extended in the direction of the timing rotary switch 1. The connection between the first elastic arm 3111 and the first hook portion 3112 is rotationally connected to the limit knob 2. When the button 32 is pressed, the first elastic arm 3111 is deformed under the pressure, driving the first hook portion 3112 to rotate away from the timing rotary switch 1, so as to release the restriction on the anti-rotation hook 11.

[0072] In the embodiment of the present invention, the first elastic hook 311 may include a first elastic arm 3111 and a first hook portion 3112. As a preferred embodiment, the first elastic arm 3111 and the first hook portion 3112 may be an integrated structure. The first elastic arm 3111 abuts against the button 32 and forms an abutment with the panel 4. When the button 32 is not pressed, the first elastic arm 3111 abuts against the button 32 to keep the button 32 protruding outward from the limit button. The first hook portion 3112 is arranged at an angle with the first elastic arm 3111, that is, the first hook portion 3112 may be arranged obliquely on the first elastic arm 3111. The fixed pin 33 is disposed at the connection between the first hook portion 3112 and the first elastic arm 3111, so that when the button 32 is pressed by the user, the abutment force applied by the button 32 to the first elastic arm 3111 increases, so that the first elastic arm 3111 is deformed in the direction close to the panel 4, and the first hook portion 3112 is driven to rotate around the fixed pin 33, that is, the first hook portion 3112 is driven to rotate away from the timing rotary switch 1, and rotated back to the inside of the limit knob 2. Thus, the limit of the anti-rotation hook 11 is released, so that the timing rotary switch 1 can be rotated to the corresponding heating time at will.

[0073] An optional embodiment of the invention, referring to Figure 4 As shown, a first deformation cavity 311101 is defined in the first elastic arm 3111 , and the first deformation cavity 311101 is deformed under the pressing force of the first elastic arm 3111 .

[0074] In the embodiment of the present invention, a first deformation cavity 311101 is provided in the first elastic arm 3111, so that when the first elastic arm 3111 is deformed by being abutted by the button 32, the deformation of the first deformation cavity 311101 can provide more deformation space for the first elastic arm 3111 in the limit knob 2. For example, the cross-sectional shape of the first deformation cavity 311101 can be semicircular, and the corresponding curved side abuts against the panel 4.

[0075] An optional embodiment of the invention, referring to Figure 3 and Figure 4 As shown, an extension cavity 3201 is defined in the button 32 , and a portion of the first elastic arm 3111 extends into the extension cavity 3201 .

[0076] In the embodiment of the present invention, an extension cavity 3201 is provided in the button 32, wherein the extension cavity 3201 is arranged along the axial direction of the button 32, and a portion of the first elastic arm 3111 extends into the extension cavity 3201. Thus, the contact area between the first elastic arm 3111 and the button 32 can be increased, and the matching stability between the first elastic arm 3111 and the button 32 can be improved.

[0077] An optional embodiment of the invention, referring to Figure 3 and Figure 4 As shown, the second elastic hook 312 may include a second elastic arm 3121 and a second hook portion 3122, and the second elastic arm 3121 is respectively in contact with the button 32 and the panel 4. The second hook portion 3122 is arranged at an angle with the second elastic arm 3121, and the second hook portion 3122 is extended in the direction of the panel 4. The connection between the second elastic arm 3121 and the second hook portion 3122 is rotatably connected to the limit knob 2. When the button 32 is pressed, the second elastic arm 3121 is deformed under the pressure, driving the second hook portion 3122 to rotate away from the panel 4, so as to release the engagement relationship with the limit groove 401.

[0078] In the embodiment of the present invention, the second elastic hook 312 may include a second elastic arm 3121 and a second hook portion 3122. As a preferred embodiment, the second elastic arm 3121 and the second hook portion 3122 may be an integrated structure. The second elastic arm 3121 abuts against the button 32 and forms an abutment with the panel 4. When the button 32 is not pressed, the second elastic arm 3121 abuts against the button 32 to keep the button 32 protruding outward from the limit button. The second hook portion 3122 is arranged at an angle with the second elastic arm 3121, that is, the second hook portion 3122 may be arranged obliquely on the second elastic arm 3121. The fixing pin 33 is provided at the connection between the second hook portion 3122 and the second elastic arm 3121, so that when the button 32 is pressed by the user, the abutting force applied by the button 32 to the second elastic arm 3121 increases, so that the second elastic arm 3121 is deformed in the direction close to the panel 4, and the second hook portion 3122 is driven to rotate around the fixing pin 33, that is, the second hook portion 3122 is driven to rotate away from the panel 4, and rotated back to the inside of the limit knob 2. In this way, the clamping relationship with the limit slot 401 is released, and the limit knob 2 can be rotated at will.

[0079] An optional embodiment of the invention, referring to Figure 4 As shown, a second deformation cavity 312101 is defined in the second elastic arm 3121 , and the second deformation cavity 312101 is deformed under the pressing force of the second elastic arm 3121 .

[0080] In the embodiment of the present invention, a second deformation cavity 312101 is provided in the second elastic arm 3121, so that when the second elastic arm 3121 is deformed by being abutted by the button 32, the deformation of the second deformation cavity 312101 can provide more deformation space for the second elastic arm 3121 in the limit knob 2. For example, the cross-sectional shape of the second deformation cavity 312101 can be semicircular, and the corresponding curved side abuts against the panel 4.

[0081] An optional embodiment of the invention, referring to Figure 3 and Figure 4 As shown, an extension cavity 3201 is defined in the button 32 , and a portion of the second elastic arm 3121 extends into the extension cavity 3201 .

[0082] In the embodiment of the present invention, an extension cavity 3201 is provided in the button 32, wherein the extension cavity 3201 is arranged along the axial direction of the button 32, and a portion of the second elastic arm 3121 extends into the extension cavity 3201. Thus, the contact area between the second elastic arm 3121 and the button 32 can be increased, and the matching stability between the second elastic arm 3121 and the button 32 can be improved.

[0083] An optional embodiment of the invention, referring to Figure 3 , Figure 4 as well as Figure 8 As shown, the limit knob 2 is provided with a first mounting hole 202 and a second mounting hole 203, and the first mounting hole 202 and the second mounting hole 203 are respectively connected with the first through hole 201. The first mounting hole 202 has a first opening toward the timing rotary switch 1, and the second mounting hole 203 has a second opening toward the limit slot 401. When there is no external pressure, one end of the elastic hook unit 31 extends outward from the first opening to form a rotation limit for the anti-rotation hook 11, and the other end of the elastic hook unit 31 extends outward from the second opening to form a snap connection with the limit slot 401.

[0084] In the embodiment of the present invention, the limit knob 2 may further include a first mounting hole 202 and a second mounting hole 203, wherein the first mounting hole 202 is used to provide the mounting of the first elastic hook 311, and the second mounting hole 203 is used to provide the mounting of the second elastic hook 312. The first mounting hole 202 is connected to the first through hole 201 so that the button 32 can abut against the first elastic hook 311, and the second mounting hole 203 is connected to the first through hole 201 so that the button 32 can abut against the second elastic hook 312.

[0085] The first mounting hole 202 has a first opening toward the timing rotary switch 1, and the first elastic hook 311 extends toward the timing rotary switch 1 through the first opening, thereby limiting the rotation angle range of the anti-rotation hook 11 through the first elastic hook 311. The second mounting hole 203 has a second opening toward the limiting groove 401, and the second elastic hook 312 extends toward the panel 4 through the second opening, thereby locking the limiting knob 2 through the engagement between the second elastic hook 312 and the limiting groove 401, and the limiting knob 2 cannot continue to rotate.

[0086] In summary, the embodiment of the present invention discloses a heating knob device, which may include a timing knob assembly, a limit knob 2 and a limit elastic assembly 3, wherein the timing knob assembly includes a timing rotary switch 1, and a stop hook 11 is provided on the outer surface of the timing rotary switch 1. The limit knob 2 is sleeved on the outer surface of the timing rotary switch 1 and is movably connected to the panel 4 of the microwave oven, wherein a first through hole 201 is provided on the limit knob 2. The limit elastic assembly 3 is embedded in the first through hole 201, wherein the limit elastic assembly 3 includes an elastic hook unit 31 provided along the radial direction of the timing rotary switch 1. Moreover, when there is no external pressure, the elastic hook unit 31 is engaged with the limit groove 401 provided in the panel 4, and the stop hook 11 is limited to limit the heating time of the timing knob assembly. Therefore, a normal user can first press the limit elastic component 3 so that the elastic hook unit 31 releases the engagement relationship with the limit slot 401, thereby manually rotating the limit knob 2 to the desired heating duration, and releasing the pressure on the limit elastic component 3. At this time, the limit elastic component 3 is engaged with the limit slot 401 corresponding to the heating duration. Therefore, when a specific user who cannot accurately distinguish the duration of the knob due to uncertainty in the heating duration heats food, he or she can turn the timing rotary switch 1 until it cannot be rotated and then let go, and the food can be cooked normally. This greatly reduces the difficulty of heating food for specific users who cannot accurately distinguish the duration of the knob due to uncertainty in the heating duration, and helps to improve the self-care ability of such users.

[0087] Reference Figure 1 As shown, an embodiment of the present invention further discloses a microwave oven, which includes the heating knob device as described in any one of the above-mentioned embodiments of the invention.

[0088] In the embodiment of the present invention, during the use of the microwave oven, referring to Figure 7 and Figure 8 As shown, when the heating knob device is in the initial state, the anti-rotation hook 11 of the timing rotary switch 1 corresponds to the position marked as "zero" for the duration, and the second elastic hook 312 is engaged with the limit groove 401 at the position corresponding to the time length marked as "zero". At this time, the timing rotary switch 1 cannot rotate, and the limit knob 2 cannot rotate either.

[0089] Normal users (such as guardians of users in special groups) can press the button 32 to increase the contact force of the button 32 on the first elastic hook 311 and the contact force of the button 32 on the second elastic hook 312. As a result, the first elastic hook 311 is deformed toward the panel 4 under the contact force of the button 32, and the first elastic hook 311 is close to the end of the timing rotary switch 1, and rotates around the fixed pin 33 into the limit knob 2 under the deformation force. Thus, the limit of the anti-rotation hook 11 is released, so that the timing rotary switch 1 can be rotated to the corresponding heating time at will.

[0090] The second elastic hook 312 is deformed toward the panel 4 under the abutting force of the button 32. The second elastic hook 312 is close to the end of the timing rotary switch 1, and under the action of the deformation force, it enters the limit knob 2 around the fixed pin 33. Thereby, the second elastic hook 312 is unlocked from the limit groove 401 on the radial outer side of the limit knob 2, and the limit knob 2 can be rotated arbitrarily at this time. At this time, a normal user can screw the limit knob 2 to the limit groove 401 corresponding to the appropriate heating time mark. Refer to Fig. 9 As shown, after the screwing is completed, the button 32 is released, and the second elastic hook 312 is engaged with the corresponding limit groove 401. At this time, the position of the limit knob 2 is locked and cannot be rotated further, and the maximum heating time of the microwave oven is locked. When a special user heats food, the timing rotary switch 1 can be rotated until it cannot be rotated (that is, the first elastic hook 311 is in contact with the anti-rotation hook 11), and then the timing rotary switch 1 is released. At this time, the microwave oven can heat the food according to the heating time set in advance by the normal user. This greatly reduces the difficulty of heating food for specific users who cannot accurately distinguish the time of the knob due to uncertainty in the heating time, and helps to improve the self-care ability of such users.

[0091] In summary, the embodiment of the present invention discloses a heating knob device and a microwave oven. The embodiment of the present invention may include a timing knob assembly, a limit knob 2 and a limit elastic assembly 3, wherein the timing knob assembly includes a timing rotary switch 1, and a stop hook 11 is provided on the outer surface of the timing rotary switch 1. The limit knob 2 is sleeved on the outer surface of the timing rotary switch 1 and is movably connected to the panel 4 of the microwave oven, wherein a first through hole 201 is provided on the limit knob 2. The limit elastic assembly 3 is embedded in the first through hole 201, wherein the limit elastic assembly 3 includes an elastic hook unit 31 provided along the radial direction of the timing rotary switch 1. Moreover, when there is no external pressure, the elastic hook unit 31 is engaged with the limit groove 401 provided in the panel 4, and the stop hook 11 is limited to limit the heating time of the timing knob assembly. Therefore, a normal user can first press the limit elastic component 3 so that the elastic hook unit 31 releases the engagement relationship with the limit slot 401, thereby manually rotating the limit knob 2 to the desired heating duration, and releasing the pressure on the limit elastic component 3. At this time, the limit elastic component 3 is engaged with the limit slot 401 corresponding to the heating duration. Therefore, when a specific user who cannot accurately distinguish the duration of the knob due to uncertainty in the heating duration heats food, he or she can turn the timing rotary switch 1 until it cannot be rotated and then let go, and the food can be cooked normally. This greatly reduces the difficulty of heating food for specific users who cannot accurately distinguish the duration of the knob due to uncertainty in the heating duration, and helps to improve the self-care ability of such users.

[0092] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0093] It is easy for a person skilled in the art to think that any combination of the above embodiments is feasible, so any combination of the above embodiments is an implementation scheme of the present invention. However, due to space limitations, this specification will not describe them in detail here.

[0094] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0095] Similarly, it should be understood that in order to streamline the present invention and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof.

[0096] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

Claims

1. A heating knob device, characterized in that: The heating knob device comprises: A timing knob assembly, the timing knob assembly comprising a timing rotary switch (1), wherein a rotation-stop hook (11) is provided on the outer side surface of the timing rotary switch (1); a limit knob (2), the limit knob (2) being sleeved on the outer surface of the timing rotary switch (1) and movably connected to the panel (4) of the microwave oven, wherein the limit knob (2) is provided with a first through hole (201); a position-limiting elastic component (3), the position-limiting elastic component (3) being embedded in the first through hole (201), wherein the position-limiting elastic component (3) comprises an elastic hook unit (31) arranged along the radial direction of the timing rotary switch (1); and When no external pressure is applied to the elastic hook unit (31), the elastic hook unit (31) is engaged with a limiting groove (401) provided in the panel (4), and limits the anti-rotation hook (11) to limit the heating time of the timing knob assembly; When external pressure acts on the elastic hook unit (31), the locking relationship between the elastic hook unit (31) and the limiting groove (401) is released.

2. The heating knob device according to claim 1, characterized in that: The limit elastic component (3) also includes a button (32), which is embedded in the first through hole (201) along the axial direction of the limit knob (2) and abuts against the elastic hook unit (31) so as to generate external pressure on the elastic hook unit (31) by pressing the button (32).

3. The heating knob device according to claim 2, characterized in that: The elastic hook unit (31) comprises a first elastic hook (311) and a second elastic hook (312), wherein the first elastic hook (311) and the second elastic hook (312) are respectively rotatably connected to the limit knob (2); wherein: The first elastic hook (311) abuts against the button (32) and is extended inwardly along the radial direction of the limit knob (2) to extend to the outer edge of the timing rotary switch (1) to limit the anti-rotation hook (11); The second elastic hook (312) abuts against the button (32) and is extended outwardly along the radial direction of the limit knob (2) to extend to the inner edge of the panel (4) to form a snap connection with the limit groove (401).

4. The heating knob device according to claim 3, characterized in that: The first elastic hook (311) comprises: A first elastic arm (3111), the first elastic arm (3111) being in abutment with the button (32) and the panel (4) respectively; A first hook portion (3112), wherein the first hook portion (3112) and the first elastic arm (3111) are arranged at an angle, and the first hook portion (3112) is extended in the direction of the timing rotary switch (1); wherein: The connection between the first elastic arm (3111) and the first hook portion (3112) is rotatably connected to the limit knob (2). When the button (32) is pressed, the first elastic arm (3111) is deformed under the action of the pressing force, driving the first hook portion (3112) to rotate away from the timing rotary switch (1), so as to release the limitation on the anti-rotation hook (11).

5. The heating knob device according to claim 3, characterized in that: The position-limiting elastic component (3) further comprises two fixing pins (33), one fixing pin (33) rotatably connects the first elastic hook (311) to the position-limiting knob (2), and the other fixing pin (33) rotatably connects the second elastic hook (312) to the position-limiting knob (2).

6. The heating knob device according to claim 4, characterized in that: A first deformation cavity (311101) is provided in the first elastic arm (3111), and the first deformation cavity (311101) is deformed under the action of pressing force of the first elastic arm (3111).

7. The heating knob device according to claim 4, characterized in that: An extension cavity (3201) is provided in the button (32), and a portion of the first elastic arm (3111) extends into the extension cavity (3201).

8. The heating knob device according to claim 3, characterized in that: The second elastic hook (312) comprises: A second elastic arm (3121), wherein the second elastic arm (3121) is in abutment with the button (32) and the panel (4) respectively; A second hook portion (3122), the second hook portion (3122) and the second elastic arm (3121) are arranged at an angle, and the second hook portion (3122) is extended in the direction of the panel (4); wherein, The connection between the second elastic arm (3121) and the second hook portion (3122) is rotatably connected to the limit knob (2). When the button (32) is pressed, the second elastic arm (3121) is deformed under the action of the pressing force, driving the second hook portion (3122) to rotate away from the panel (4) to release the locking relationship with the limit groove (401).

9. The heating knob device according to claim 8, characterized in that: A second deformation cavity (312101) is provided in the second elastic arm (3121), and the second deformation cavity (312101) is deformed under the action of pressing force of the second elastic arm (3121).

10. The heating knob device according to claim 8, characterized in that: An extension cavity (3201) is provided in the button (32), and a portion of the second elastic arm (3121) extends into the extension cavity (3201).

11. The heating knob device according to claim 2, characterized in that: The limit knob (2) is provided with a first mounting hole (202) and a second mounting hole (203), and the first mounting hole (202) and the second mounting hole (203) are respectively connected to the first through hole (201); wherein: The first mounting hole (202) has a first opening facing the timing rotary switch (1), and the second mounting hole (203) has a second opening facing the limiting groove (401). When there is no external pressure, one end of the elastic hook unit (31) extends outward from the first opening to form a rotation limit for the anti-rotation hook (11), and the other end of the elastic hook unit (31) extends outward from the second opening to form a snap connection with the limiting groove (401).

12. A microwave oven, characterized in that: The microwave oven comprises a heating knob device as described in any one of claims 1-11.

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