CN112447431B - Key assembly and household appliance - Google Patents
Key assembly and household appliance Download PDFInfo
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- CN112447431B CN112447431B CN202011293052.4A CN202011293052A CN112447431B CN 112447431 B CN112447431 B CN 112447431B CN 202011293052 A CN202011293052 A CN 202011293052A CN 112447431 B CN112447431 B CN 112447431B
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- Prior art keywords
- elastic
- installation cavity
- key assembly
- bottom plate
- key
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
- H01H13/7065—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys characterised by the mechanism between keys and layered keyboards
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
- H01H13/7065—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys characterised by the mechanism between keys and layered keyboards
- H01H13/7073—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys characterised by the mechanism between keys and layered keyboards characterised by springs, e.g. Euler springs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/86—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the casing, e.g. sealed casings or casings reducible in size
Landscapes
- Push-Button Switches (AREA)
Abstract
The invention discloses a key assembly and a household appliance, wherein the key assembly comprises a shell, a bottom plate and keys, an installation cavity is arranged in the shell, the bottom plate is installed at the bottom of the shell, the bottom plate is provided with a switch positioned in the installation cavity, the keys are movably arranged in the installation cavity and comprise a pressing plate and an elastic piece, one side of the pressing plate, facing the bottom plate, is provided with a pressing position matched with the switch, one end of the elastic piece is connected with the pressing plate, and the other end of the elastic piece is abutted against the bottom plate. According to the invention, the shell with the installation cavity and the keys arranged in the installation cavity are arranged, the bottom of the shell is provided with the bottom plate, the keys are matched with the installation cavity to realize movable connection, and the switches on the bottom plate are controlled through the pressing positions; and realize the elasticity through elastic component and bottom plate butt cooperation and reset for the simple structure of button, part are few, the assembly of being convenient for have effectively improved production efficiency.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a key assembly and a household appliance.
Background
In the related art, the existing key structure generally adopts a spring to realize elastic reset, and has the disadvantages of complex structure, more die sinking parts, complex assembly and low production efficiency.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the key assembly is convenient to assemble, and the production efficiency is improved.
The invention also provides a household appliance with the key assembly.
A key assembly according to an embodiment of a first aspect of the present invention includes: the shell is internally provided with an installation cavity; the bottom plate is arranged at the bottom of the shell and provided with a switch, and the switch is positioned in the mounting cavity; the button is movably arranged in the mounting cavity and comprises a pressing plate and an elastic piece, one side, facing the bottom plate, of the pressing plate is provided with a pressing position matched with the switch, one end of the elastic piece is connected with the pressing plate, and the other end of the elastic piece is abutted to the bottom plate.
The key assembly provided by the embodiment of the invention at least has the following beneficial effects:
the bottom of the shell is provided with a bottom plate, the keys are matched with the installation cavity to realize movable connection, and a switch on the bottom plate is controlled through a pressing position; and realize the elasticity through elastic component and bottom plate butt cooperation and reset for the simple structure of button, part are few, the assembly of being convenient for have effectively improved production efficiency.
According to some embodiments of the invention, the resilient member is a unitary piece.
According to some embodiments of the invention, the switch is a tact switch.
According to some embodiments of the present invention, the elastic member includes a mounting portion connected to the pressing plate and an elastic portion connected to the mounting portion and bent toward the base plate.
According to some embodiments of the invention, the elastic part is connected to one end of the mounting part in a width direction and is bent toward the other end of the width direction.
According to some embodiments of the invention, two elastic members are connected to the board at intervals, and the elastic portions of the two elastic members are bent in opposite directions.
According to some embodiments of the invention, the outer side of the mounting portion is provided with a protruding point, and the protruding point is matched with the inner wall of the mounting cavity.
According to some embodiments of the invention, a connection between the elastic portion and the mounting portion is provided with a notch.
According to some embodiments of the present invention, the key further includes a connecting plate, the connecting plate is disposed on a side of the pressing plate facing the bottom plate, and two ends of the connecting plate are respectively connected to the two elastic members.
According to some embodiments of the invention, a plurality of guide ribs arranged in the up-down direction are arranged on the inner wall of the mounting cavity at intervals, and the guide ribs are in sliding fit with the mounting part or the connecting plate.
According to some embodiments of the present invention, a first limiting member is disposed on one side of the mounting portion facing the mounting cavity, and a second limiting member engaged with the first limiting member is disposed on an inner wall of the mounting cavity.
According to some embodiments of the invention, the bottom plate is further provided with a light emitting element located in the mounting cavity, and the pressing plate can cover an upper end face of the mounting cavity.
According to some embodiments of the invention, the number of the installation cavities is multiple, the installation cavities are arranged in the shell side by side, the number of the keys is multiple, and the keys are respectively arranged in one-to-one correspondence with the installation cavities.
According to some embodiments of the invention, the upper end surface of the housing is circumferentially formed with a peripheral edge on which the decorative shell is mounted.
According to some embodiments of the invention, the base plate comprises a printed circuit board, the switch and the light emitting element being integrated on the printed circuit board.
According to some embodiments of the invention, the housing is provided with a mounting post, the bottom plate is provided with a mounting hole corresponding to the mounting post, and the mounting hole and the mounting post are connected through a fastener.
According to some embodiments of the invention, the fastening member is a screw, the mounting post has an internal thread formed therein, and the screw is inserted into the mounting hole and fixed to the mounting post.
According to some embodiments of the invention, the upper end surface of the pressing plate is provided with CD lines.
According to some embodiments of the present invention, the upper end surface of the housing is provided with a fool-proof groove, and the inner side of the pressing plate is provided with a fool-proof boss matched with the fool-proof groove.
The household appliance according to the second aspect of the embodiment of the present invention includes the key assembly described in the above embodiments.
The household appliance provided by the embodiment of the invention at least has the following beneficial effects:
by adopting the key assembly provided by the embodiment of the first aspect of the invention, the key assembly is provided with the shell with the installation cavity and the keys arranged in the installation cavity, the bottom of the shell is provided with the bottom plate, the keys are matched with the installation cavity to realize movable connection, and the switches on the bottom plate are controlled by pressing positions; and realize the elasticity through elastic component and bottom plate butt cooperation and reset for the simple structure of button, part are few, the assembly of being convenient for have effectively improved production efficiency.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
fig. 1 is a schematic structural diagram of a key assembly according to an embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 isbase:Sub>A cross-sectional view of section A-A of FIG. 3;
FIG. 5 is a cross-sectional view of section B-B of FIG. 3;
FIG. 6 is a schematic view of an angle of the key shown in FIG. 2;
FIG. 7 is a schematic view of another angle of the key shown in FIG. 2;
fig. 8 is a schematic structural view of the housing in fig. 1.
Reference numerals:
a housing 100; a mounting cavity 110; a guide rib 111; a second stopper 112; a peripheral edge 120; a decorative cover 130; a fool-proof groove 140; a mounting post 150;
a base plate 200; a switch 210; mounting holes 220;
a key 300; a pressing plate 310; a fool-proof boss 311; an elastic member 320; a mounting portion 321; an elastic portion 322; a top rod 330; bumps 340; a first limiting member 350; a notch 360; a connection plate 370;
a light-emitting element 400;
a fastener 500;
a key assembly 1000.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation descriptions, such as the orientation or positional relationship indicated by upper, lower, etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise specifically limited, terms such as set, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.
Referring to fig. 1, a key assembly 1000 according to an embodiment of the present invention is applied to a home appliance, such as a microwave oven, an oven, etc.; the key assembly 1000 of the present embodiment is specifically installed on a panel of a home appliance, so that a user can control the home appliance conveniently.
Referring to fig. 2, a key assembly 1000 of the present embodiment includes a case 100, a base plate 200, and keys 300. A mounting cavity 110 is formed in the housing 100, and the mounting cavity 110 penetrates in the vertical direction. The bottom plate 200 is installed at the bottom of the casing 100, the bottom plate 200 is used for sealing the lower end of the installation cavity 110, the switch 210 is arranged on the bottom plate 200, the switch 210 is located in the installation cavity 110, and the switch 210 can trigger a control circuit of the household appliance, so that the household appliance can realize corresponding functions. It can be understood that the switch 210 can be a tact switch, which has a compact structure, low production cost and a long service life.
Referring to fig. 3, 4 and 5, the key 300 is movably disposed in the installation cavity 110, the key 300 is matched with the installation cavity 110 to move up and down along the installation cavity 110, the key 300 includes a pressing plate 310 and an elastic member 320, one side of the pressing plate 310 facing the bottom plate 200 (i.e., the inner side of the pressing plate 310) is provided with a pressing position, the pressing position may be an area where the inner side of the pressing plate 310 is matched with the switch 210, or a push rod 330 connected with the inner side of the pressing plate 310 may be adopted, the push rod 330 of the embodiment is matched with the switch 210, and the switch 210 may be triggered by pressing the push rod 330 up and down, thereby controlling the switch 210. One end of the elastic member 320 is connected to the pressing plate 310, and the other end is in abutting engagement with the base plate 200, so that the elastic member can be rebounded with respect to the pressing plate 310, and the key 300 is elastically restored by the elastic engagement of the elastic member 320 and the base plate 200. The key assembly 1000 of the embodiment adopts the elastic member 320 to realize reset, and compared with the spring structure in the prior art, the spring structure has the advantages of simple structure, few parts, convenience in assembly and capability of effectively improving the production efficiency. The elastic member 320 may be formed to be inclined toward the base plate 200, thereby increasing its elastic force.
Referring to fig. 4, 5 and 6, it can be understood that the elastic member 320 includes a mounting portion 321 and an elastic portion 322, the elastic member 320 is a single piece, the mounting portion 321 is connected to the pressing plate 310, the mounting portion 321 is formed by extending the pressing plate 310 downward, the mounting portion 321 may be configured as a strut structure or a strut structure, the elastic portion 322 is connected to the mounting portion 321, the mounting portion 321 is used to increase the durability of the elastic portion 322, and the mounting portion 321 can reduce the extending length of the elastic portion 322, thereby reducing the damage probability of the elastic portion 322 and improving the strength of the elastic member 320. The elastic part 322 is bent and extended toward the base plate 200, and the elastic member 320 has better elastic performance due to the bent structure, and the elastic performance of the elastic member 320 can be adjusted by the sectional diameter and the bending degree of the elastic part 322. It is understood that one end of the elastic portion 322 may be connected to a middle portion of the mounting portion 321 in a width direction (i.e., a left-right direction in fig. 6, the same applies below), and the other end may respectively extend along two ends of the mounting portion 321 in the width direction in a bending manner, or only extend along one end of the mounting portion 321 in a bending manner; in addition, one end of the elastic portion 322 may be connected to one end of the mounting portion 321 in the width direction, and the other end may extend to be bent toward the base plate 200, which is not particularly limited herein. The pressing plate 310 and the elastic member 320 may be integrally formed, for example, by injection molding, so that the structural strength is improved and the production is more convenient.
Referring to fig. 6, it can be understood that the elastic part 322 is connected to one end of the mounting part 321 in the width direction, and the elastic part 322 is bent to extend toward the other end of the mounting part 321 in the width direction. It should be noted that the elastic portion 322 is configured as an arc-shaped spring leg, so that the elastic member 320 forms a relatively stable elastic structure, and the elastic member rebounds through the arc-shaped spring leg, thereby resetting the key 300.
Referring to fig. 6, it can be understood that two elastic members 320 are provided at the inner side of the pressing plate 310, and the two elastic members 320 are spaced apart in the front-rear direction of fig. 6 and may be respectively located at both ends of the push rod 330. The two elastic members 320 can improve the elastic performance of the key 300 and improve the rebound effect. The two elastic members 320 are respectively provided with an elastic portion 322, and the extending directions of the two elastic portions 322 may be the same direction or opposite directions, which is not limited herein.
Referring to fig. 6, it can be understood that the two elastic portions 322 are bent in opposite directions, that is, the elastic portion 322 of one of the elastic members 320 is bent and extends from left to right, and the elastic portion 322 of the other elastic member 320 is bent and extends from right to left, so that the overall structure of the key 300 is more stable, the elastic force of the key 300 is more balanced, the movement of the key 300 is more stable, which is beneficial to prolonging the service life of the elastic member 320, and thus prolonging the service life of the key assembly 1000.
Referring to fig. 6 and 7, it can be understood that the connection between the elastic portion 322 and the mounting portion 321 is provided with a notch 360, which can further improve the elastic performance of the elastic element 320. It should be noted that the notch 360 may be arc-shaped, and is arc-shaped with a larger diameter, so as to reduce stress concentration and ensure structural strength of the key.
Referring to fig. 5 and 6, it can be understood that a protruding point 340 is disposed on an outer side of the mounting portion 321, and the protruding point 340 is in abutting fit with an inner wall of the mounting cavity 110, so that the key 300 and the mounting cavity 110 are positioned between front and rear sides in fig. 5, the positioning effect between the key 300 and the mounting cavity 110 can be improved, and the key 300 is prevented from tilting and shaking.
Referring to fig. 6, it can be understood that the key 300 further includes a connection plate 370, the connection plate 370 is provided at a side of the button plate 310 facing the base plate 200, and the connection plate 370 may be formed by extending downward from an inner side of the button plate 310. The two connecting plates 370 are arranged at intervals in the left-right direction in fig. 6, two ends of the connecting plate 370 are connected between the two elastic members 320, and the connecting plate 370 generally adopts a support plate structure, so that the mounting strength of the mounting portion 321 can be improved, and the structural strength of the elastic members 320 can be improved. The connection plate 370 is abutted and matched with the inner wall of the installation cavity 110, so that the stability of the key 300 relative to the installation cavity 110 is further improved.
Referring to fig. 8, it can be understood that the inner wall interval of installation cavity 110 is equipped with many direction muscle 111 that extend along upper and lower direction, direction muscle 111 can set up around installation cavity 110, direction muscle 111 cooperates with installation department 321 or connecting plate 370, realizes the location between button 300 and the installation cavity 110, further improves the location effect between button 300 and the installation cavity 110, improves the slip precision of button 300, prevents that button 300 from rocking or jamming, promotes user experience.
Referring to fig. 5, 6 and 8, it can be understood that, in order to prevent the key 300 from being released from the installation cavity 110 during the elastic reset, a first limiting member 350 is disposed on an outer side of the installation portion 321, and a second limiting member 112 engaged with the first limiting member 350 is disposed on an inner wall of the installation cavity 110; of course, the key 300 can be prevented from being removed by providing a limiting structure on the upper end surface of the housing 100. In this embodiment, the first limiting member 350 is a clamping groove structure, the corresponding second limiting member 112 is a clamping column structure, and the clamping column and the clamping groove are matched to limit the stroke of the key 300 moving in the up-down direction, so that the overall structure of the key assembly 1000 is more stable, and the key 300 can be assembled only by being pressed into the installation cavity 110 during assembly, which is convenient to install and improves the assembly efficiency. Of course, the first limiting member 350 may also be a clamping column structure, and the corresponding second limiting member 112 is a clamping groove structure, which can also limit the stroke of the key 300 moving in the up-down direction.
Referring to fig. 3, 4 and 5, key assembly 1000 according to another embodiment of the present invention further includes a light emitting element 400, where light emitting element 400 is disposed in mounting cavity 110, for example, mounted on bottom plate 200. The key assembly 1000 of the present embodiment is a transparent key. It is understood that the light emitting element 400 may be a light emitting diode, or other components with light source characteristics, and is not limited in detail herein. The light emitted from the light emitting element 400 is projected to the pressing plate 310 through the installation cavity 110, and then the light is scattered by the pressing plate 310 and passes through the surface of the pressing plate 310 to be displayed in a light-transmitting manner, if a font or an icon is provided on the pressing plate 310, the light can also pass through the pressing plate 310 to transmit the font or the icon, such as a STAR font in fig. 3. It should be noted that the pressing plate 310 may be made of translucent light-scattering plastic, the surface of the pressing plate 310 is electroplated, and the fonts or icons are laser-etched, so that the fonts or icons on the surface of the key 300 can be uniformly transmitted after light scattering, and the visual effect is improved. Of course, the pressing plate 310 may be processed in other manners to realize the light transmission of the key 300, and is not limited in detail herein. In addition, the light emitting element 400 may be electrically connected to the switch 210, so that the light emitting element 400 is controlled by the switch 210 to implement different functions; for example, when the switch 210 is turned on, the light emitting element 400 emits light, and when the switch 210 is turned off, the light emitting element 400 does not emit light; or the light emitting element 400 emits light of one color when the switch 210 is turned off, and the light emitting element 400 emits light of another color when the switch 210 is turned on.
Referring to fig. 4 and 5, it can be understood that the pressing plate 310 can cover the upper end surface of the mounting cavity 110, that is, the cross-sectional area of the pressing plate 310 is configured to cover the upper end surface of the mounting cavity 110, so as to block the edge light scattered by the light emitting element 400 to the upper end of the mounting cavity 110, avoid light leakage between the key 300 and the housing 100, improve the display quality of the key assembly 1000, and improve the user experience and the product grade.
Referring to fig. 4, it can be understood that the light emitting elements 400 are located at two ends of the switch 210 along the second direction (i.e., the left-right direction in fig. 4), so as to avoid interference with the elastic member 320, and the light emitting elements 400 are disposed opposite to the connecting plate 370, so that the connecting plate 370 can block light, thereby preventing light from leaking out of the edge of the mounting cavity 110 to cause light leakage, and further improving the display quality of the key assembly 1000.
Referring to fig. 5, it can be understood that the mounting portion 321 is configured as a support plate structure, which can block light of the light emitting element 400, and further prevent light from overflowing from the edge of the mounting cavity 110 to cause light leakage. Moreover, the first position-limiting member 350 is also designed as a blind hole, so that the key 300 can obtain a better light leakage prevention effect.
Referring to fig. 8, it can be understood that a plurality of installation cavities 110 are provided, a plurality of installation cavities 110 are arranged side by side in the housing 100, and a plurality of keys 300 are provided, wherein the plurality of keys 300 are respectively arranged in one-to-one correspondence with the installation cavities 110 to form a plurality of rows of keys 300, for example, a double-row or multi-row array structure, which is not limited in detail herein. It should be noted that, referring to fig. 3, fig. 4 and fig. 5, in the key assembly 1000 of the present embodiment, each key 300 is in fit connection with the independent installation cavity 110, so that stable movement of the key 300 is ensured, the plurality of keys 300 do not interfere with each other, and there is no light leakage or light leakage. In addition, the elastic piece 320 structure is adopted to realize the resilience of the keys 300, so that a larger gap does not need to be reserved between the pressing plates 310 of the adjacent keys 300, the gap between the adjacent pressing plates 310 can be 0.5mm, the gap between the keys 300 is smaller, the requirement of appearance is met, the visual effect is improved, the assembly is convenient, and the cost is low.
Referring to fig. 2 and 5, it can be understood that a surrounding edge 120 is formed on the upper end surface of the housing 100 along the circumferential direction, the decoration shell 130 is mounted on the surrounding edge 120, and the arrangement of the decoration shell 130 can reduce the gap between the edge of the pressing plate 310 and the surrounding edge 120, thereby improving the visual effect of the appearance, and reducing the occurrence of light leakage and light channeling of the key 300. It should be noted that the decorative shell 130 can be fixed on the housing 100 by adhesion, which is convenient for assembly and lower in cost.
Referring to fig. 7 and 8, it can be understood that the upper end surface of the housing 100 is provided with the fool-proof groove 140, and the inner side of the pressing plate 310 is provided with the fool-proof boss 311 matched with the fool-proof groove 140, thereby preventing the reverse installation of the key 300 with fonts or icons, improving the accuracy of assembly, and reducing the risk of misinstallation.
Referring to fig. 2 and 4, it can be understood that the base plate 200 includes a printed circuit board, i.e., a PCB board, which may be fixed on the base plate 200, or the base plate 200 is cut out of the printed circuit board, on which the switch 210 and the light emitting element 400 are integrated, which is more convenient and less costly to produce.
Referring to fig. 2, it can be understood that housing 100 is provided with mounting posts 150, base plate 200 is provided with mounting holes 220 corresponding to mounting posts 150, and mounting holes 220 and mounting posts 150 are connected by fasteners 500, so that housing 100 and base plate 200 are stably connected, and the overall structure of key assembly 1000 is more stable.
Referring to fig. 2, it can be understood that the fastening member 500 is a screw, an internal thread is formed in the mounting post 150, and the screw is inserted into the mounting hole 220 and fixed to the mounting post 150, which is convenient to assemble, stable in structure, and durable.
Referring to fig. 2, it can be understood that the upper end surface of the pressing plate 310 is provided with CD patterns, so that the visual effect of the key 300 is obviously improved, and the product grade is improved. It should be noted that the CD striations are an effect similar to the CD striations obtained by removing material on the metal surface by using a precise CD striation machine, the space between the striations is determined according to the external dimension effect of the product, and the CD striations are recognized in the industry as a higher-grade surface treatment process of the metal surface.
Referring to fig. 1 and 2, a household appliance according to an embodiment of the present invention includes a key assembly 1000 according to an embodiment of the first aspect. The household appliance of the embodiment adopts the key assembly 1000 of the first aspect of the present invention, the key assembly 1000 is provided with the casing 100 having the installation cavity 110 and the keys 300 arranged in the installation cavity 110, the bottom of the casing 100 is provided with the bottom plate 200, the keys 300 are matched with the installation cavity 110 to realize the movable connection in the up-and-down direction, the switch 210 on the bottom plate 200 is controlled by the ejector rod 330, and the elastic reset is realized by the abutting and matching of the elastic member 320 and the bottom plate 200, so that the key 300 has a simple structure, few parts, and is convenient for assembly, and the production efficiency is effectively improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (9)
1. A key assembly, comprising:
the shell is internally provided with an installation cavity;
the bottom plate is arranged at the bottom of the shell and provided with a switch, and the switch is positioned in the installation cavity;
the key is movably arranged in the mounting cavity and comprises a pressing plate and an elastic piece, one side of the pressing plate, facing the bottom plate, is provided with a pressing position matched with the switch, one end of the elastic piece is connected with the pressing plate, and the other end of the elastic piece is abutted to the bottom plate;
the elastic part comprises an installation part and an elastic part, the installation part is connected with the pressing plate and extends downwards through the pressing plate, the elastic part is connected with the installation part and extends towards the bottom plate in a bending way, and a gap is formed at the joint of the elastic part and the installation part.
2. The key assembly of claim 1, wherein: the elastic member is an integral piece.
3. The key assembly of claim 2, wherein: the elastic part is connected with one end of the mounting part along the width direction and is bent towards the other end of the mounting part along the width direction.
4. The key assembly of claim 3, wherein: the pressing plate is connected with two elastic pieces at intervals, and the elastic parts of the two elastic pieces bend towards opposite directions.
5. The key assembly of claim 4, wherein: the key further comprises a connecting plate, the connecting plate is arranged on one side, facing the bottom plate, of the pressing plate, and two ends of the connecting plate are connected with the two elastic pieces respectively.
6. The key assembly of claim 1, wherein: the installation department orientation first locating part has been seted up to one side of installation cavity, the inner wall of installation cavity be equipped with first locating part complex second locating part.
7. The key assembly according to any one of claims 1 to 6, wherein: the bottom plate is further provided with a light-emitting element located in the installation cavity, and the pressing plate can cover the upper end face of the installation cavity.
8. The key assembly of claim 1, wherein: the installation cavity is equipped with a plurality ofly, and is a plurality of the installation cavity is located side by side in the casing, the button is equipped with just a plurality ofly the button respectively with the installation cavity one-to-one sets up.
9. A household appliance, characterized in that: a key assembly including the key assembly of any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011293052.4A CN112447431B (en) | 2020-11-18 | 2020-11-18 | Key assembly and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011293052.4A CN112447431B (en) | 2020-11-18 | 2020-11-18 | Key assembly and household appliance |
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| Publication Number | Publication Date |
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| CN112447431A CN112447431A (en) | 2021-03-05 |
| CN112447431B true CN112447431B (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011293052.4A Active CN112447431B (en) | 2020-11-18 | 2020-11-18 | Key assembly and household appliance |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023087479A1 (en) * | 2021-11-17 | 2023-05-25 | 广东美的厨房电器制造有限公司 | Lock structure and cooking appliance |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19704419C1 (en) * | 1997-02-06 | 1998-03-12 | Whirlpool Co | Illuminated switch pushbutton device |
| JP2007257844A (en) * | 2006-03-20 | 2007-10-04 | Sony Corp | Push-button structure |
| CN106653438B (en) * | 2016-10-21 | 2018-12-28 | 广州视源电子科技股份有限公司 | The production method of interactive intelligent tablet computer, press-key structure and its light-guiding pillar |
| CN107658159A (en) * | 2017-10-27 | 2018-02-02 | 大明电子有限公司 | Motor switch drive mechanism, rearview mirror adjusting switch and there is its stacked switch |
| CN211045320U (en) * | 2019-11-28 | 2020-07-17 | 星络智能科技有限公司 | Switch button and switch panel |
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| CN112447431A (en) | 2021-03-05 |
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