CN111067370B - Knob switch and electric cooker - Google Patents
Knob switch and electric cooker Download PDFInfo
- Publication number
- CN111067370B CN111067370B CN201911419721.5A CN201911419721A CN111067370B CN 111067370 B CN111067370 B CN 111067370B CN 201911419721 A CN201911419721 A CN 201911419721A CN 111067370 B CN111067370 B CN 111067370B
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- knob
- rotating
- groove
- transmission
- hole
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- 230000005540 biological transmission Effects 0.000 claims abstract description 86
- 235000007164 Oryza sativa Nutrition 0.000 claims description 19
- 235000009566 rice Nutrition 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000010411 cooking Methods 0.000 abstract description 25
- 238000004321 preservation Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 241000209094 Oryza Species 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/32—Time-controlled igniting mechanisms or alarm devices
Abstract
The invention relates to a knob switch and electric cooker, the knob switch includes: a face cover; the knob comprises a rotating part and a rotating shaft, the rotating part is rotatably connected with the face cover through the rotating shaft, and a first limit groove is formed in the rotating part; the transmission piece is positioned between the face cover and the rotating part, a guide groove for the rotating shaft to pass through is formed in the transmission piece, the rotating shaft is in sliding fit with the guide groove, a first abutting column is arranged on the transmission piece, the first abutting column is inserted into the first limiting groove, and when the knob rotates, the first limiting groove is in driving fit with the first abutting column, so that the transmission piece can slide between a first position and a second position relative to the knob; and the movable piece is positioned on one surface of the surface cover, which is far away from the transmission piece, and is connected with the transmission piece in a linkage way. The knob switch of the invention can realize the control of the cooking and heat preservation functions of the electric cooker, has convenient operation, simple structure and fewer required parts and can effectively reduce the production cost.
Description
Technical Field
The invention relates to the technical field of cooking appliances, in particular to a knob switch and an electric cooker.
Background
The electric cooker is a common cooking appliance in daily life, the existing electric cooker is generally provided with a key switch corresponding to a cooking function and a heat preservation function respectively, when the electric cooker needs to cook, the key switch corresponding to the cooking function is pressed down, when the heat preservation is needed, the key switch corresponding to the heat preservation function is pressed down, the operation is very inconvenient, the two key switches are adopted to respectively control the cooking function and the heat preservation function of the electric cooker, the required parts are more in production and manufacturing, and the cost is higher in batch production.
Disclosure of Invention
Based on this, it is necessary to provide a knob switch and an electric rice cooker, wherein the knob switch can realize the control of the rice cooking and heat preservation functions of the electric rice cooker, has convenient operation and simple structure, requires fewer parts and can effectively reduce the production cost.
A knob switch, comprising:
a face cover;
the knob comprises a rotating part and a rotating shaft, the rotating part is rotatably connected with the surface cover through the rotating shaft, and a first limit groove is formed in the rotating part;
the transmission piece is positioned between the face cover and the rotating part, a guide groove for the rotating shaft to pass through is formed in the transmission piece, the rotating shaft is in sliding fit with the guide groove, a first abutting column is arranged on the transmission piece and is inserted into the first limiting groove, and when the knob rotates, the first limiting groove is in driving fit with the first abutting column, so that the transmission piece can slide between a first position and a second position relative to the knob; and
the movable piece is positioned on one surface of the surface cover, which is far away from the transmission piece, and the movable piece is connected with the transmission piece in a linkage way.
In general, a temperature sensor and a driving rod are arranged at the bottom of a cooker body of the electric cooker, the middle part of the driving rod is pivoted with the cooker body, the driving rod is provided with a jacking end matched with the temperature sensor and a pressed end driven by external force, a trigger switch (such as a micro switch) is arranged below a rod body of the driving rod, which is close to one side of the temperature sensor, and the driving rod is acted on the driving rod through the external force so as to be matched with the trigger switch, thereby realizing the cooking function or the heat preservation function of the electric cooker. When the knob switch is applied to the electric cooker, the knob switch is arranged on the cooker body through the surface cover, the knob is positioned on the outer side of the cooker body, and the movable piece is positioned on the inner side of the cooker body and above the pressure end of the driving rod. When the rice needs to be cooked, the knob is rotated along the first direction, the first limit groove on the knob is in driving fit with the first abutting column of the transmission piece, so that the transmission piece can slide downwards to the second position, the movable piece can be driven to move downwards to apply downward pressure to the pressed end of the driving rod, correspondingly, the jacking end of the driving rod moves upwards until the driving rod does not continuously apply pressure to the trigger switch, and the rice cooker is in a heating state at the moment, so that the rice cooking function can be realized; when the cooking or heat preservation needs to be canceled, the knob is rotated along the second direction, the first limit groove on the knob is in driving fit with the first abutting column of the transmission piece, the transmission piece can move upwards to the first position, the movable piece can be driven to move upwards until the movable piece does not apply force to the pressed end of the driving rod any more, the jacking end of the driving rod can move downwards to reset, and the trigger switch is triggered, so that the electric rice cooker is in the cooking or heat preservation canceling state. Therefore, the control of the rice cooking and heat preservation functions of the electric rice cooker can be realized through one knob switch, the operation is convenient, the structure is simple, fewer parts are required, and the production cost can be effectively reduced.
In one embodiment, the cover is provided with a mounting hole, the cover comprises a sleeve part extending from the periphery of the mounting hole towards one side far away from the transmission part, the movable part is sleeved on the periphery of the sleeve part in an up-down movable mode, the transmission part is connected with the movable part through a linkage structure, the cover is provided with an avoidance hole for the linkage structure to move up and down, the end part of the sleeve part is provided with a fixing part, the fixing part is provided with a through hole corresponding to the mounting hole, the rotating shaft sequentially penetrates through the mounting hole, the sleeve part and the through hole, one end of the rotating part, far away from the rotating part, is connected with a rotating part, and the rotating part is synchronously linked with the rotating part.
In one embodiment, the movable member includes a connection portion and a driving portion disposed at a bottom side of the connection portion, a movable groove is disposed on the connection portion, the connection portion is movably sleeved on a periphery of the sleeve portion through the movable groove, and the driving portion is provided with a driving groove.
In one embodiment, one of the transmission piece and the movable piece is provided with a plug-in column, the other one is provided with a plug-in hole, and the plug-in column is in plug-in fit with the plug-in hole to form the linkage structure.
In one embodiment, one of the transmission member and the movable member is provided with a clamping portion, the other one is provided with a clamping hole, and the clamping portion passes through the avoidance hole to be in clamping fit with the clamping hole.
In one embodiment, the transmission member is further provided with a second abutting column, the second abutting column and the first abutting column are respectively located at two opposite sides of the width direction of the guide groove, the rotating part is further provided with a second limiting groove, and the second abutting column can be vertically movably inserted into the second limiting groove.
In one embodiment, the knob has an initial rotational position and a first rotational position, the transmission member moving downwardly from the first position to the second position when the knob is rotated in a first direction from the initial rotational position to the first rotational position; when the knob rotates from the first rotating position to the initial rotating position along a second direction, the transmission piece moves upwards from the second position to the first position.
In one embodiment, the knob has an initial rotational position, a first rotational position, and a second rotational position, the transmission member moving downwardly from the first position to the second position when the knob is rotated in a first direction from the initial rotational position to the first rotational position; when the knob rotates from the initial position to the second rotation position along the second direction, the transmission piece moves upwards from the second position to the first position; the knob switch further comprises an elastic reset piece, wherein the elastic reset piece is used for driving the knob to return to the initial rotation position from the first rotation position or the second rotation position after external force is removed, and the position of the transmission piece is kept unchanged in the rotation reset process of the knob.
In one embodiment, the elastic restoring member adopts a bidirectional torsion spring structure, the elastic restoring member comprises a first torsion arm, a second torsion arm and a third torsion arm, an annular table is arranged on the periphery of the through hole on one surface of the fixing member, which is close to the rotating member, the elastic restoring member is sleeved on the periphery of the annular table, a first clamping groove, a second clamping groove and a third clamping groove are formed in the periphery Xiang Sheyou of the rotating member, the first torsion arm is clamped in the first clamping groove, the second torsion arm is clamped in the second clamping groove, the third torsion arm is clamped in the third clamping groove, and a plurality of limiting convex parts are further arranged on the fixing member and used for limiting the rotating displacement of the elastic restoring member.
In one embodiment, the face cover is provided with a first function indicator light and a second function indicator light.
An electric cooker comprises the knob switch.
Drawings
Fig. 1 is an exploded view of a rotary switch according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the knob switch of FIG. 1 in an initial rotated position;
FIG. 3 is a schematic view of a first cross-sectional structure of the knob switch of FIG. 2 with a cover omitted;
FIG. 4 is a schematic diagram of a second cross-sectional structure of the rotary switch of FIG. 2;
FIG. 5 is a schematic view of the knob of the rotary switch of FIG. 1 in a first rotated position;
FIG. 6 is a schematic view of a first cross-sectional structure of the knob switch of FIG. 5 with a cover omitted;
FIG. 7 is a schematic diagram of a second cross-sectional structure of the rotary switch of FIG. 5;
FIG. 8 is an exploded view of a rotary switch according to a second embodiment of the present invention;
FIG. 9 is a schematic view of the knob switch of FIG. 8 in an initial rotated position;
FIG. 10 is a schematic view of the knob switch of FIG. 9 with a cover omitted;
FIG. 11 is a schematic view of a second cross-sectional structure of the rotary switch of FIG. 9;
FIG. 12 is a schematic view of the knob of the rotary switch of FIG. 8 in a first rotated position;
FIG. 13 is a schematic view of a first cross-sectional structure of the knob switch of FIG. 12 with a cover omitted;
FIG. 14 is a schematic view of a second cross-sectional structure of the rotary switch of FIG. 12;
FIG. 15 is a schematic view of the knob of the rotary switch of FIG. 8 in a second rotated position;
FIG. 16 is a schematic view of the knob switch of FIG. 15 with a cover omitted;
FIG. 17 is a second cross-sectional view of the rotary switch of FIG. 15;
FIG. 18 is a schematic view of the back structure of the face cover of the rotary switch of FIGS. 1 and 8;
fig. 19 is a schematic cross-sectional structure of a knob of the knob switch in the first embodiment;
FIG. 20 is a schematic cross-sectional view of a knob of the knob switch in the second embodiment;
FIG. 21 is a schematic view of the driving member of the rotary switch of FIGS. 1 and 8;
FIG. 22 is a schematic view of the movable member of the rotary switch of FIGS. 1 and 8;
FIG. 23 is a schematic structural view of a fixing member of the rotary switch of FIGS. 1 and 8;
FIG. 24 is a schematic view of the rotary member of the rotary switch of FIGS. 1 and 8;
fig. 25 is a schematic structural view of an elastic restoring member of the knob switch in fig. 8.
10. The face cover, 11, the mounting hole, 12, the sleeve part, 13, the avoidance hole, 14, the positioning column, 15, the first function indicator lamp, 16, the second function indicator lamp, 17, the first mark, 20, the knob, 21, the rotating part, 211, the first limit groove, 212, the second limit groove, 213, the second mark, 22, the rotating shaft, 221, the limit column, 30, the transmission piece, 31, the guide groove, 32, the first abutting column, 33, the clamping part, 34, the plug-in column, 35, the second abutting column, 40, the movable piece, 41, the connecting part, 411, the movable groove, 412, the clamping hole, 413, the plug-in hole, 42, the driving part, 421, the driving groove, 50, the fixing part, 51, the penetrating hole, 52, the positioning hole, 53, the annular table, 54, the limit convex part, 60, the rotating part, 61, the disc body, 611, the penetrating hole, 62, the connecting column, 621, the penetrating hole, 63, the first clamping groove, 64, the second clamping groove, 65, the third clamping groove, 70, the connecting part, the fastener, the 80, the reset arm, the first torsion arm, the third torsion arm, and the torsion arm.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "first," "second," and "third" in this specification do not denote a particular quantity or order, but rather are used for distinguishing between similar or identical items.
Referring to fig. 1 and 8, a knob switch includes a cover 10, a knob 20, a transmission member 30 and a movable member 40.
The cover 10 is used for integrating the knob 20, the transmission part 30 and the movable part 40 into a whole, the cooker body of the electric cooker is reserved with a mounting opening matched with the cover 10, the cover 10 is covered at the mounting opening, and the knob switch can be integrally assembled on the cooker body of the electric cooker, so that the electric cooker is simple and convenient to assemble.
Referring to fig. 19 and 20, the knob 20 includes a rotating portion 21 and a rotating shaft 22, the rotating portion 21 is rotatably connected to the cover 10 through the rotating shaft 22, and a first limiting groove 211 is formed on the rotating portion 21. The rotating part 21 is a cover-shaped body with one side open, and a user can realize the control of the knob switch by only manually rotating the rotating part 21, so that the operation is simple and convenient. Optionally, the rotating part 21 is provided with a plurality of anti-slip lines in the circumferential direction.
Referring to fig. 21, the transmission member 30 is located between the cover 10 and the rotating portion 21, a guiding slot 31 is formed in the transmission member 30 for the rotation shaft 22 to pass through, the rotation shaft 22 is slidably engaged with the guiding slot 31, a first abutment post 32 is formed in the transmission member 30, the first abutment post 32 is inserted into the first limiting slot 211, and when the knob 20 rotates, the first limiting slot 211 is in driving engagement with the first abutment post 32, so that the transmission member 30 can slide between the first position and the second position relative to the knob 20. The guide groove 31 is arranged in a strip shape to form a certain movable space with the rotating shaft 22, and optionally, the guide groove 31 is a vertically extending kidney-shaped groove.
The movable piece 40 is located on one surface of the surface cover 10 far away from the transmission piece 30, and the movable piece 40 is connected with the transmission piece 30 in a linkage way. When the transmission member 30 slides up and down, the movable member 40 can slide up and down along with the transmission member 30, so that the movable member 40 can act on the driving rod of the electric rice cooker.
In general, a temperature sensor and a driving rod are arranged at the bottom of a cooker body of the electric cooker, the middle part of the driving rod is pivoted with the cooker body, the driving rod is provided with a jacking end matched with the temperature sensor and a pressed end driven by external force, a trigger switch (such as a micro switch) is arranged below a rod body of the driving rod, which is close to one side of the temperature sensor, and the driving rod is acted on the driving rod through the external force so as to be matched with the trigger switch, thereby realizing the cooking function or the heat preservation function of the electric cooker. When the knob switch is applied to the electric cooker, the knob switch is arranged on the cooker body through the surface cover 10, the knob 20 is positioned on the outer side of the cooker body, and the movable piece 40 is positioned on the inner side of the cooker body and above the pressure end of the driving rod. When the knob 20 is required to cook, the first limit groove 211 on the knob 20 is in driving fit with the first abutting column 32 of the transmission piece 30 along the first direction, so that the transmission piece 30 can slide downwards to the second position, and the movable piece 40 can be driven to move downwards to apply downward pressure to the pressed end of the driving rod, correspondingly, the jacking end of the driving rod can move upwards until the driving rod does not continuously apply pressure to the trigger switch, and the electric cooker is in a heating state at the moment, so that the cooking function can be realized; when the cooking or heat preservation needs to be canceled, the knob 20 is rotated along the second direction, the first limit groove 211 on the knob 20 is in driving fit with the first abutting post 32 of the transmission piece 30, so that the transmission piece 30 can move upwards to the first position, and then the movable piece 40 can be driven to move upwards until the movable piece 40 does not apply force to the pressed end of the driving rod any more, the jacking end of the driving rod can move downwards to reset, and the trigger switch is triggered, and at the moment, the electric rice cooker is in a state of canceling the cooking or heat preservation. Therefore, the control of the rice cooking and heat preservation functions of the electric rice cooker can be realized through one knob switch, the operation is convenient, the structure is simple, fewer parts are required, and the production cost can be effectively reduced.
Further, referring to fig. 4 and 18, the cover 10 is provided with a mounting hole 11, the cover 10 includes a sleeve portion 12 extending from a periphery of the mounting hole 11 toward a side far away from the driving member 30, the moving member 40 is movably sleeved on a periphery of the sleeve portion 12, the driving member 30 and the moving member 40 are connected through a linkage structure, the cover 10 is provided with a avoiding hole 13 for the linkage structure to move up and down, an end portion of the sleeve portion 12 is provided with a fixing member 50, the fixing member 50 is provided with a through hole 51 corresponding to the mounting hole 11, the rotating shaft 22 sequentially passes through the mounting hole 11, the sleeve portion 12 and the through hole 51, one end of the rotating shaft 22 far away from the rotating portion 21 is connected with a rotating member 60, and the rotating member 60 and the rotating portion 21 are synchronously linked. During assembly, the rotary shaft 22 of the knob 20 sequentially passes through the guide groove 31, the mounting hole 11, the sleeve portion 12 and the through hole 51, so that the knob 20, the transmission member 30, the face cover 10 and the fixing member 50 can be assembled into a whole, the movable member 40 is sleeved on the sleeve portion 12 and is positioned between the face cover 10 and the fixing member 50, the movable member 40 can be limited in movement along the axial direction of the sleeve portion 12 through the fixing member 50, and finally the rotary member 60 is fixed at the tail end of the rotary shaft 22. The whole structure is simple, the required parts are fewer, and the assembly is convenient.
Referring to fig. 24, alternatively, the rotating member 60 includes a disc body 61 opposite to the fixing member 50, and a connecting post 62 disposed on one surface of the disc body 61 near the fixing member 50, the rotating shaft 22 is hollow, the connecting post 62 is inserted into the rotating shaft 22, a through hole 621 through which the fastening member 70 passes is disposed in the connecting post 62, and the rotating portion 21 is correspondingly provided with a through hole for accommodating the locking member, and the through hole is communicated with the hollow cavity of the rotating shaft 22. After the connecting post 62 of the rotating member 60 is inserted into the hollow cavity of the rotating shaft 22, the fastening member 70 (such as a bolt) is inserted into the through hole 621, and the tail end of the fastening member 70 can be locked by a locking member (such as a nut), so that the rotating member 60 can be fixedly connected with the knob 20, and the assembly is simple and convenient. Optionally, a decorative cover is provided on the outer side of the rotating portion 21 of the knob 20, and the locking member can be covered and protected by the decorative cover.
Optionally, a plurality of limiting posts 221 are disposed at intervals on the end surface of the rotating shaft 22, and limiting holes 611 in plug-in fit with the limiting posts 221 are correspondingly disposed on the tray 61. By the cooperation of the limit post 221 and the limit hole 611, the knob 20 and the rotating member 60 can form transmission connection before, so as to ensure that the rotating member 60 and the knob 20 are synchronously linked.
Further, referring to fig. 22, the movable member 40 includes a connecting portion 41 and a driving portion 42 disposed at a bottom side of the connecting portion 41, the connecting portion 41 is provided with a movable slot 411, the connecting portion 41 is movably sleeved on an outer periphery of the sleeve portion 12 through the movable slot 411, and the driving portion 42 is provided with a driving slot 421. By providing the driving groove 421, the pressed end of the driving rod can be inserted into the driving groove 421, so that linkage connection between the driving rod and the movable member 40 is realized, and the movable member 40 can act on the driving rod more accurately.
Referring to fig. 18 and 23, optionally, the fixing member 50 is provided with a positioning hole 52, the face cover 10 is correspondingly provided with a positioning column 14, and the fixing member 50 and the face cover 10 can be assembled into a whole rapidly and accurately by matching the positioning column 14 with the positioning hole 52, so that the assembly efficiency is further improved. At the same time, by the cooperation of the positioning posts 14 and the positioning holes 52, the fixing member 50 can be ensured to be kept stationary relative to the face cover 10 during the rotation of the knob 20. The number of the positioning posts 14 can be set according to practical needs, for example, as shown in fig. 18, four positioning posts 14 are provided on the cover 10, and correspondingly, four positioning holes 52 are provided on the fixing member 50.
Further, one of the transmission member 30 and the movable member 40 is provided with a plug-in post 34, and the other is provided with a plug-in hole 413, and the plug-in post 34 is in plug-in fit with the plug-in hole 413 to form a linkage structure. By the engagement of the plug-in post 34 with the plug-in hole 413, the transmission member 30 and the movable member 40 can be synchronously linked. For example, as shown in fig. 21 and 22, a plug post 34 is disposed on a surface of the transmission member 30 away from the first abutment post 32, correspondingly, a plug hole 413 is disposed on the movable member 40, and the plug post 34 passes through the avoidance hole 13 and is inserted into the plug hole 413, so that the transmission member 30 and the movable member 40 can be connected in a linkage manner, and the avoidance hole 13 on the face cover 10 can make a space for the plug post 34 to move up and down, so that the transmission member 30 can drive the movable member 40 to move up and down. Alternatively, the opposite sides of the transmission member 30 are respectively provided with the plugging posts 34, and correspondingly, the opposite sides of the movable member 40 are provided with the plugging holes 413 corresponding to the plugging posts 34 one by one.
Further, in order to prevent the transmission member 30 from being separated from the movable member 40, one of the transmission member 30 and the movable member 40 is provided with a locking portion 33, and the other is provided with a locking hole 412, and the locking portion 33 passes through the avoiding hole 13 to be locked and engaged with the locking hole 412. The transmission part 30 and the movable part 40 are connected by adopting a buckling structure, so that the assembly is simple and convenient, and the connection is reliable. Alternatively, the two opposite sides of the transmission member 30 are respectively provided with the clamping portions 33, and correspondingly, the two opposite sides of the movable member 40 are provided with the clamping holes 412 corresponding to the clamping portions 33 one by one, so that the reliability of linkage connection can be further ensured.
Further, the transmission member 30 is further provided with a second abutment post 35, the second abutment post 35 and the first abutment post 32 are respectively located at two opposite sides of the width direction of the guide slot 31, the rotating part 21 is further provided with a second limiting slot 212, and the second abutment post 35 can be inserted into the second limiting slot 212 in an up-down movable manner. In the rotation process of the knob 20, the first limiting groove 211 and the first abutting column 32 are in driving fit to enable the transmission member 30 to generate vertical displacement, the second abutting column 35 can move up and down in the second limiting groove 212, and the movement of the transmission member 30 can be limited through abutting fit of the upper groove wall or the lower groove wall of the second limiting groove 212 and the second abutting column 35, so that the transmission member 30 can be ensured to move to a preset position accurately.
In practical application, the knob switch can meet different usage scenarios by changing the dimensions of the first limit groove 211 and the second limit groove 212, and the following two application scenarios of the knob switch are illustrated.
Referring to fig. 1 to 7, in the first embodiment, the knob 20 has an initial rotation position and a first rotation position, and when the knob 20 rotates from the initial rotation position to the first rotation position along a first direction, the transmission member 30 moves downward from the first position to the second position; when the knob 20 is rotated in the second direction from the first rotational position to the initial rotational position, the transmission member 30 moves upward from the second position to the first position.
In the present embodiment, the upper and lower side groove walls of the first limiting groove 211 can be kept in contact with the first contact post 32. Referring to fig. 2 to 4, when the knob 20 is at the initial rotation position, the first abutment post 32 is sandwiched between the upper and lower side walls of the first limiting groove 211, the upper side wall of the second limiting groove 212 abuts against the second abutment post 35, and the lower side wall of the second limiting groove 212 is separated from the second abutment post 35, and at this time, the transmission member 30 is at the first position. Referring to fig. 5 to 7, when cooking is required, the knob 20 is manually rotated clockwise to the first rotation position, and during rotation of the knob 20, the first limiting groove 211 is in driving engagement with the first abutment post 32, the second abutment post 35 moves downward until abutting against the lower side wall of the second limiting groove 212, and the transmission member 30 moves downward from the first position to the second position, so that the movable member 40 can be driven to move downward, and the movable member 40 can act on the pressed end of the driving rod, so that the electric rice cooker is in a heating state. When the cooking needs to be canceled or the knob 20 is in a heat-preserving state, the knob 20 is only required to be rotated anticlockwise from the first rotation position to the initial rotation position, the first limiting groove 211 is in driving fit with the first abutting column 32, the second abutting column 35 moves upwards until abutting against the upper side groove wall of the second limiting groove 212, and the transmission piece 30 moves upwards from the second position to the first position, so that the movable piece 40 can be driven to move upwards until the movable piece 40 no longer exerts acting force on the pressed end of the driving rod.
Optionally, as shown in fig. 2, the cover 10 is provided with a first mark 17, and the knob 20 is provided with a second mark 213, and when the knob 20 is in the initial rotation position, the second mark 213 is opposite to the first mark 17. The user can know whether the rice cooker is in a cooking state or a cooking-canceling (or insulating) state by observing the relative positions of the first mark 17 and the second mark 213.
Optionally, the face cover 10 is provided with a first function indicator light 15 and a second function indicator light 16. The first function indicator lamp 15 may correspond to a cooking function, and the second function indicator lamp 16 may correspond to a heat preservation function, and a user may rapidly obtain the state of the electric rice cooker by observing the state of the indicator lamp.
Referring to fig. 8 to 17, in the second embodiment, the knob 20 has an initial rotation position, a first rotation position and a second rotation position, and when the knob 20 rotates from the initial rotation position to the first rotation position along the first direction, the transmission member 30 moves downward from the first position to the second position; when the knob 20 is rotated from the initial position to the second rotated position in the second direction, the transmission member 30 is moved upward from the second position to the first position; the knob switch further comprises an elastic reset element 80, wherein the elastic reset element 80 is used for driving the knob 20 to return to the initial rotation position from the first rotation position or the second rotation position after the external force is removed, and the position of the transmission element 30 is kept unchanged in the process of rotating and resetting the knob 20.
In the present embodiment, as shown in fig. 20, the width of the first limiting groove 211 is relatively increased, and the elastic restoring member 80 is also added, compared to the first embodiment. Referring to fig. 9 to 11, when the knob 20 is at the initial rotation position, the upper side groove wall of the first limiting groove 211 is abutted against the first abutment post 32, the lower side groove wall of the first limiting groove 211 is separated from the first abutment post 32, the second abutment post 35 is located at the middle position of the second limiting groove 212 and is separated from the upper side groove wall and the lower side groove wall of the second limiting groove 212, and at this time, the transmission member 30 is located at the first position.
Referring to fig. 12 to 14, when cooking is required, only the knob 20 is manually rotated clockwise, the upper side groove wall of the first limiting groove 211 is in driving engagement with the first abutment post 32, the second abutment post 35 moves downward until abutting against the lower side groove wall of the second limiting groove 212, and the transmission member 30 moves downward from the first position to the second position, so that the movable member 40 can be driven to move downward, and the movable member 40 can act on the pressed end of the driving rod, so that the electric rice cooker is in a heating state. After the external force applied to the knob 20 by the user is removed, the elastic reset piece 80 drives the knob 20 to return to the initial rotation position from the first rotation position, and in the process of rotating and resetting the knob 20, a certain space is formed between the lower side groove wall of the first limiting groove 211 and the first abutting column 32, so that the lower side groove wall of the first limiting groove 211 cannot generate an acting force on the first abutting column 32, at this time, the transmission piece 30 is still kept at the second position, and the movable piece 40 is kept in a state of abutting against the driving rod, so that the electric cooker is kept in a heating state.
Referring to fig. 15 to 17, when the cooking needs to be canceled or the cooking is in a heat-preserving state, only the knob 20 needs to be rotated counterclockwise to the second rotation position, the lower side groove wall of the first limiting groove 211 is in driving engagement with the first abutting post 32, the second abutting post 35 moves upward until abutting against the upper side groove wall of the second limiting groove 212, and the transmission member 30 moves upward from the second position to the first position, so that the movable member 40 can be driven to move upward until the movable member 40 no longer applies a force to the driving rod. After the external force applied to the knob 20 by the user is removed, the elastic reset element 80 drives the knob 20 to return to the initial rotation position from the second rotation position, and in the process of rotating and resetting the knob 20, a certain space is formed between the upper side groove wall of the first limiting groove 211 and the first abutting column 32, so that the acting force can not be generated on the first abutting column 32 by the upper side groove wall of the first limiting groove 211, at this time, the transmission element 30 is still kept at the first position, and the acting force can not be applied on the driving rod by the movable element 40.
Optionally, as shown in fig. 9, the cover 10 is provided with a first mark 17, and the knob 20 is provided with a second mark 213, and when the knob 20 is in the initial rotation position, the second mark 213 is opposite to the first mark 17. Optionally, the face cover 10 is provided with a first function indicator light 15 and a second function indicator light 16. The first function indicator lamp 15 may correspond to a cooking function, and the second function indicator lamp 16 may correspond to a heat preservation function, and a user may rapidly obtain the state of the electric rice cooker by observing the state of the indicator lamp.
Further, please combine fig. 23 to 25, the elastic restoring member 80 adopts a bidirectional torsion spring structure, the elastic restoring member 80 includes a first torsion arm 81, a second torsion arm 82 and a third torsion arm 83, the surface of the fixing member 50, which is close to the rotating member 60, is provided with an annular table 53 at the periphery of the through hole 51, the elastic restoring member 80 is sleeved at the periphery of the annular table 53, a first clamping groove 63, a second clamping groove 64 and a third clamping groove 65 are provided in the circumferential direction of the rotating member 60, the first torsion arm 81 is clamped in the first clamping groove 63, the second torsion arm 82 is clamped in the second clamping groove 64, the third torsion arm 83 is clamped in the third clamping groove 65, a plurality of limiting protrusions 54 are further provided on the fixing member 50, and the limiting protrusions 54 are used for limiting the rotational displacement of the elastic restoring member 80. When the knob 20 is rotated by an external force, the rotating member 60 and the knob 20 rotate synchronously, the elastic restoring member 80 can rotate together through the cooperation of the first torsion arm 81 and the first clamping groove 63, the cooperation of the second torsion arm 82 and the second clamping groove 64, and the cooperation of the third torsion arm 83 and the third clamping groove 65, and meanwhile, the elastic restoring member 80 is in a compressed state through the spacing cooperation of the spacing protruding portions 54 with the first torsion arm 81, the second torsion arm 82 and the third torsion arm 83 respectively, and after the external force is removed, the elastic restoring member 80 can drive the knob 20 to return to an initial rotating position.
The invention also provides an electric cooker which comprises a cooker body and a knob switch arranged on the cooker body. The specific structure of the knob switch can refer to the above embodiment, and since the electric cooker adopts all the technical schemes of the above embodiment, the electric cooker has at least all the beneficial effects brought by the technical schemes, and will not be described in detail herein.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A rotary switch, comprising:
a face cover;
the knob comprises a rotating part and a rotating shaft, the rotating part is rotatably connected with the surface cover through the rotating shaft, and a first limit groove is formed in the rotating part;
the transmission piece is positioned between the face cover and the rotating part, a guide groove for the rotating shaft to pass through is formed in the transmission piece, the rotating shaft is in sliding fit with the guide groove, a first abutting column is arranged on the transmission piece and is inserted into the first limiting groove, and when the knob rotates, the first limiting groove is in driving fit with the first abutting column, so that the transmission piece can slide between a first position and a second position relative to the knob; and
the movable piece is positioned on one surface of the surface cover, which is far away from the transmission piece, and the movable piece is connected with the transmission piece in a linkage way.
2. The knob switch according to claim 1, wherein the cover is provided with a mounting hole, the cover comprises a sleeve portion extending from the periphery of the mounting hole towards a side far away from the transmission member, the movable member is movably sleeved on the periphery of the sleeve portion up and down, the transmission member and the movable member are connected through a linkage structure, the cover is provided with a avoiding hole for the linkage structure to move up and down, the end of the sleeve portion is provided with a fixing member, the fixing member is provided with a through hole corresponding to the mounting hole, the rotating shaft sequentially penetrates through the mounting hole, the sleeve portion and the through hole, one end of the rotating shaft far away from the rotating portion is connected with a rotating member, and the rotating member and the rotating portion are synchronously linked.
3. The rotary switch according to claim 2, wherein the movable member comprises a connecting portion and a driving portion disposed at a bottom side of the connecting portion, a movable groove is disposed on the connecting portion, the connecting portion is movably sleeved on a periphery of the sleeve portion up and down through the movable groove, and a driving groove is disposed on the driving portion.
4. The rotary switch according to claim 2, wherein one of the transmission member and the movable member is provided with a plug-in post, and the other is provided with a plug-in hole, and the plug-in post and the plug-in hole are in plug-in fit to form the linkage structure.
5. The rotary switch of claim 4, wherein one of the transmission member and the movable member is provided with a locking portion, and the other is provided with a locking hole, and the locking portion passes through the avoiding hole to be locked and engaged with the locking hole.
6. The rotary switch according to any one of claims 2 to 5, wherein the transmission member is further provided with a second abutment post, the second abutment post and the first abutment post are respectively located at two opposite sides of the width direction of the guide slot, the rotating portion is further provided with a second limit slot, and the second abutment post is vertically movably inserted in the second limit slot.
7. The rotary switch of claim 6, wherein the knob has an initial rotational position and a first rotational position, the transmission moving downwardly from the first position to the second position when the knob is rotated in a first direction from the initial rotational position to the first rotational position; when the knob rotates from the first rotating position to the initial rotating position along a second direction, the transmission piece moves upwards from the second position to the first position.
8. The rotary switch of claim 6, wherein the knob has an initial rotational position, a first rotational position, and a second rotational position, the transmission moving downwardly from the first position to the second position when the knob is rotated in a first direction from the initial rotational position to the first rotational position; when the knob rotates from the initial rotation position to the second rotation position along a second direction, the transmission piece moves upwards from the second position to the first position; the knob switch further comprises an elastic reset piece, wherein the elastic reset piece is used for driving the knob to return to the initial rotation position from the first rotation position or the second rotation position after external force is removed, and the position of the transmission piece is kept unchanged in the rotation reset process of the knob.
9. The rotary switch according to claim 8, wherein the elastic restoring member adopts a bidirectional torsion spring structure, the elastic restoring member comprises a first torsion arm, a second torsion arm and a third torsion arm, an annular table is arranged on the periphery of the penetrating hole, which is close to one surface of the rotating member, the elastic restoring member is sleeved on the periphery of the annular table, a first clamping groove, a second clamping groove and a third clamping groove are formed in the periphery Xiang Sheyou of the rotating member, the first torsion arm is clamped in the first clamping groove, the second torsion arm is clamped in the second clamping groove, the third torsion arm is clamped in the third clamping groove, and a plurality of limiting protrusions are further arranged on the fixing member and are used for limiting the rotational displacement of the elastic restoring member.
10. An electric rice cooker comprising a knob switch according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911419721.5A CN111067370B (en) | 2019-12-31 | 2019-12-31 | Knob switch and electric cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911419721.5A CN111067370B (en) | 2019-12-31 | 2019-12-31 | Knob switch and electric cooker |
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| Publication Number | Publication Date |
|---|---|
| CN111067370A CN111067370A (en) | 2020-04-28 |
| CN111067370B true CN111067370B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911419721.5A Active CN111067370B (en) | 2019-12-31 | 2019-12-31 | Knob switch and electric cooker |
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| CN (1) | CN111067370B (en) |
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| GB1444156A (en) * | 1972-10-06 | 1976-07-28 | Philips Nv | Control knob assembly |
| DE19951422A1 (en) * | 1999-10-26 | 2001-05-10 | Aeg Hausgeraete Gmbh | Rotary operating unit for domestic appliance, esp. cooker, has damping element for damping movement of knob from recessed position to operating position |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111067370A (en) | 2020-04-28 |
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