CN112053874A - Key structure and temperature controller using same - Google Patents

Key structure and temperature controller using same Download PDF

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Publication number
CN112053874A
CN112053874A CN202010574040.2A CN202010574040A CN112053874A CN 112053874 A CN112053874 A CN 112053874A CN 202010574040 A CN202010574040 A CN 202010574040A CN 112053874 A CN112053874 A CN 112053874A
Authority
CN
China
Prior art keywords
key
operation panel
positioning
push button
rear side
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010574040.2A
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Chinese (zh)
Inventor
叶龙
马涛
姜红梅
田涵朴
李志敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Zilian Internet Of Things Technology Co ltd
Super Wisdom Shanghai Internet Of Things Technology Co ltd
Original Assignee
Henan Zilian Internet Of Things Technology Co ltd
Super Wisdom Shanghai Internet Of Things Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Zilian Internet Of Things Technology Co ltd, Super Wisdom Shanghai Internet Of Things Technology Co ltd filed Critical Henan Zilian Internet Of Things Technology Co ltd
Priority to CN202010574040.2A priority Critical patent/CN112053874A/en
Publication of CN112053874A publication Critical patent/CN112053874A/en
Pending legal-status Critical Current

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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
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • 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
    • H01H13/02—Details
    • H01H13/04—Cases; Covers
    • 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
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Push-Button Switches (AREA)

Abstract

The invention relates to a key structure and a temperature controller using the same. A key structure comprising: an operation panel having a front side and a rear side, the front side of the operation panel facing an operator when in use, the rear side of the operation panel facing away from the operator when in use; a circuit board arranged at the rear side of the operation panel and provided with a switch circuit; a key sheet provided on the front side of the operation panel and used for triggering the switch circuit when pressed; further comprising: the elastic piece is arranged on the rear side of the operation panel and used for applying forward elastic acting force to the key board, the elastic piece comprises a base body and a pushing bulge, the rear side of the base body is supported on the circuit board, and the pushing bulge is arranged on the base body in a forward protruding mode; the push button comprises a push button plate, a push button boss and an elastic piece, wherein the push button plate is provided with a through hole, the through hole penetrates through the operation panel in the front-back direction, and the push button boss is inserted into the through hole so that the elastic piece bears the pressing of the push button plate when the push button plate is pressed down.

Description

Key structure and temperature controller using same
Technical Field
The invention relates to a key structure and a temperature controller using the same.
Background
The touch key is an electronic switch component which cannot independently generate functions and can be matched with a PCB (printed circuit board) to form a complete switch control system. The light touch key is generally installed on a circuit board, circuit conduction can be realized only by slightly pressing the light touch key, the light touch key can be automatically reset when being loosened, and the realization principle is mainly that electric signal transmission is realized through the elastic movement of a metal elastic sheet in the light touch key under stress. The light touch key has the advantages of small contact resistance charge, accurate operation force error, diversified specifications and the like, and is widely applied to electronic equipment such as a light touch switch and the like.
Chinese patent with publication number CN206774426U discloses a key structure, which comprises a key cap and a body panel, wherein the key cap is clamped on the body panel, and a reset elastic member is arranged between the key cap and the body panel and used for resetting the key cap in the pressing process; the pressing cap is contacted with the trigger key on the circuit board, and when the pressing cap is pressed, the trigger key is triggered to realize circuit conduction.
Because foretell elastic component that resets sets up between button cap and body panel, has occupied the more front space of body panel, leads to the thickness of button cap great, and then leads to the whole thickness of body panel great, is unfavorable for frivolous design.
Disclosure of Invention
The invention aims to provide a key structure, which aims to solve the technical problem that in the prior art, a reset elastic part is arranged between a key cap and a body panel, occupies more front space of the body panel and causes larger thickness of the key cap; the invention also aims to provide a temperature controller to solve the technical problem that in the prior art, the reset elastic piece is arranged between the key cap and the body panel, occupies more front space of the body panel, and causes the thickness of the key cap to be larger and further causes the whole thickness of the body panel to be larger.
In order to achieve the purpose, the technical scheme of the key structure is as follows:
a key structure comprising:
an operation panel having a front side and a rear side, the front side of the operation panel facing an operator when in use, the rear side of the operation panel facing away from the operator when in use;
a circuit board arranged at the rear side of the operation panel and provided with a switch circuit;
a key sheet provided on the front side of the operation panel and used for triggering the switch circuit when pressed;
further comprising:
the elastic piece is arranged on the rear side of the operation panel and used for applying forward elastic acting force to the key board, the elastic piece comprises a base body and a pushing bulge, the rear side of the base body is supported on the circuit board, and the pushing bulge is arranged on the base body in a forward protruding mode;
the push button comprises a push button plate, a push button boss and an elastic piece, wherein the push button plate is provided with a through hole, the through hole penetrates through the operation panel in the front-back direction, and the push button boss is inserted into the through hole so that the elastic piece bears the pressing of the push button plate when the push button plate is pressed down.
The beneficial effects are that: through setting up the elastic component in operating panel's rear side, with keypad and elastic component assembly back on operating panel, not only can improve button operation sense of touch, the elastic component can not occupy the space of operating panel front side moreover, makes the whole thickness of keypad less, is favorable to frivolousization. In addition, the elastic piece is arranged in the through hole of the operation panel in a penetrating way through the pushing bulge, so that the elastic piece is simple and convenient to install, and the processing requirement on the operation panel is low.
Furthermore, the base body is provided with a groove with a backward opening, so that the base body is of a leather cup structure.
The beneficial effects are that: the design ensures that the elastic piece has better deformation when being pressed by the key board.
Furthermore, a positioning structure is arranged between the elastic piece and the operation panel, and the positioning structure is used for positioning the elastic piece in a plane perpendicular to the front-back direction.
The beneficial effects are that: the elastic piece is prevented from moving in a plane vertical to the front and rear directions, and the stability of the elastic piece is ensured.
Furthermore, the positioning structure comprises a positioning column and a positioning hole, the positioning column is matched with the positioning hole in a positioning mode, the positioning column is arranged on one of the elastic piece and the operation panel, and the positioning hole is arranged on the other of the elastic piece and the operation panel.
The beneficial effects are that: through the positioning cooperation of the positioning columns and the positioning holes, the elastic piece is ensured not to move in a plane vertical to the front and back directions.
Further, the outer peripheral surface of the pushing projection is a smooth surface.
The beneficial effects are that: the pushing protrusion can move in the through hole conveniently.
Further, a light touch key is arranged on the circuit board and used for triggering the switch circuit;
the rear side face of the base body is provided with a key avoiding groove, and the key avoiding groove corresponds to the light touch key on the circuit board so as to accommodate at least part of the thickness of the light touch key.
The beneficial effects are that: the key structure is suitable for the touch key.
Furthermore, the groove bottom of the key avoiding groove is provided with an avoiding hole, the avoiding hole is used for exposing the movable pressing part of the light touch key, and the groove bottom of the key avoiding groove covers one part of the light touch key.
The beneficial effects are that: due to the design, the base body is ensured to have certain strength while the light touch key is exposed.
Further, the switch circuit is a copper foil loop arranged on the circuit board;
and a conductive layer is arranged on the groove wall of the groove, or an independent silica gel key is arranged in front of the substrate and the circuit board, a conductive layer is arranged on the rear side of the silica gel key, and the conductive layer is used for triggering the copper foil loop.
The beneficial effects are that: the copper foil loop on the circuit board is triggered through the conducting layer on the base body or the silica gel key, so that the key board is silent when being pressed, and the user experience is improved.
Further, the elastic member is made of silicone.
The beneficial effects are that: silica gel material deformation volume is great, makes user's sense of touch better, possesses noise cancelling effect simultaneously, can reduce to dab the sound of feeding when the button is pressed.
In order to realize the purpose, the technical scheme of the temperature controller is as follows:
the temperature controller comprises a panel part and a bottom shell part, wherein the panel part is provided with a key structure;
the key structure includes:
an operation panel having a front side and a rear side, the front side of the operation panel facing an operator when in use, the rear side of the operation panel facing away from the operator when in use;
a circuit board arranged at the rear side of the operation panel and provided with a switch circuit;
a key sheet provided on the front side of the operation panel and used for triggering the switch circuit when pressed;
further comprising:
the elastic piece is arranged on the rear side of the operation panel and used for applying forward elastic acting force to the key board, the elastic piece comprises a base body and a pushing bulge, the rear side of the base body is supported on the circuit board, and the pushing bulge is arranged on the base body in a forward protruding mode;
the push button comprises a push button plate, a push button boss and an elastic piece, wherein the push button plate is provided with a through hole, the through hole penetrates through the operation panel in the front-back direction, and the push button boss is inserted into the through hole so that the elastic piece bears the pressing of the push button plate when the push button plate is pressed down.
The beneficial effects are that: through setting up the elastic component in operating panel's rear side, with keypad and elastic component assembly back on operating panel, not only can improve button operation sense of touch, the elastic component can not occupy the space of operating panel front side moreover, makes the whole thickness of keypad less, is favorable to frivolousization. In addition, the elastic piece is arranged in the through hole of the operation panel in a penetrating way through the pushing bulge, so that the elastic piece is simple and convenient to install, and the processing requirement on the operation panel is low.
Furthermore, the base body is provided with a groove with a backward opening, so that the base body is of a leather cup structure.
The beneficial effects are that: the design ensures that the elastic piece has better deformation when being pressed by the key board.
Furthermore, a positioning structure is arranged between the elastic piece and the operation panel, and the positioning structure is used for positioning the elastic piece in a plane perpendicular to the front-back direction.
The beneficial effects are that: the elastic piece is prevented from moving in a plane vertical to the front and rear directions, and the stability of the elastic piece is ensured.
Furthermore, the positioning structure comprises a positioning column and a positioning hole, the positioning column is matched with the positioning hole in a positioning mode, the positioning column is arranged on one of the elastic piece and the operation panel, and the positioning hole is arranged on the other of the elastic piece and the operation panel.
The beneficial effects are that: through the positioning cooperation of the positioning columns and the positioning holes, the elastic piece is ensured not to move in a plane vertical to the front and back directions.
Further, the outer peripheral surface of the pushing projection is a smooth surface.
The beneficial effects are that: the pushing protrusion can move in the through hole conveniently.
Further, a light touch key is arranged on the circuit board and used for triggering the switch circuit;
the rear side face of the base body is provided with a key avoiding groove, and the key avoiding groove corresponds to the light touch key on the circuit board so as to accommodate at least part of the thickness of the light touch key.
The beneficial effects are that: the key structure is suitable for the touch key.
Furthermore, the groove bottom of the key avoiding groove is provided with an avoiding hole, the avoiding hole is used for exposing the movable pressing part of the light touch key, and the groove bottom of the key avoiding groove covers one part of the light touch key.
The beneficial effects are that: due to the design, the base body is ensured to have certain strength while the light touch key is exposed.
Further, the switch circuit is a copper foil loop arranged on the circuit board;
and a conductive layer is arranged on the groove wall of the groove, or an independent silica gel key is arranged in front of the substrate and the circuit board, a conductive layer is arranged on the rear side of the silica gel key, and the conductive layer is used for triggering the copper foil loop.
The beneficial effects are that: the copper foil loop on the circuit board is triggered through the conducting layer on the base body or the silica gel key, so that the key board is silent when being pressed, and the user experience is improved.
Further, the elastic member is made of silicone.
The beneficial effects are that: silica gel material deformation volume is great, makes user's sense of touch better, possesses noise cancelling effect simultaneously, can reduce to dab the sound of feeding when the button is pressed.
Drawings
FIG. 1 is a schematic structural diagram of a thermostat according to an embodiment 1 of the present invention;
FIG. 2 is a partial exploded view of the temperature controller of FIG. 1;
FIG. 3 is a schematic structural diagram of the operation panel of FIG. 2;
FIG. 4 is a schematic view of the operation panel shown in FIG. 3;
FIG. 5 is a schematic structural view of the first elastic member in FIG. 2;
FIG. 6 is a schematic view of the first elastic member shown in FIG. 5 from another perspective;
FIG. 7 is a schematic structural view of the second elastic member in FIG. 2;
FIG. 8 is a structural view of the second elastic member shown in FIG. 7 from another perspective;
FIG. 9 is a schematic structural diagram of the small key of FIG. 1;
FIG. 10 is a schematic structural diagram of the large key of FIG. 1;
FIG. 11 is a partial sectional view of the thermostat of FIG. 1;
in the figure: 101-panel portion; 102-a bottom shell portion; 1-a small keypad; 11-a first press bump; 12-a first snap; 2-large key board; 21-a second press bump; 22-a second buckle; 23-reinforcing ribs; 3-touching the key; 31-solder tail; 32-an active pressing part; 4-an operation panel; 41-a first snap hole; 42-first key hole; 43-a first locating hole; 44-a first via; 45-a second snap hole; 46-second key hole; 47-second positioning hole; 48-a second via; 49-positioning protrusions; 5-a first elastic member; 51-a first urging projection; 52-first substrate; 53-first positioning column; 54-a first avoidance hole; 55-first key avoidance slot; 56-first step structure; 57-a first groove; 6-a second elastic member; 61-a second pushing projection; 62-a second substrate; 63-a second positioning column; 64-a second avoidance hole; 65-second key evasion groove; 66-a second stepped configuration; 67-a second groove; 7-circuit board.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "upper" and "lower" are based on the orientation and positional relationship shown in the drawings and are only for convenience of description of the present invention, and do not indicate that the referred device or component must have a specific orientation, and thus, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
The specific embodiment 1 of the temperature controller of the invention:
as shown in fig. 1 and 2, the thermostat includes a panel portion 101 and a bottom case portion 102, the panel portion 101 includes an operation panel 4, the operation panel 4 has a front side and a rear side, the front side of the operation panel 4 faces an operator when in use, and the rear side of the operation panel 4 faces away from the operator when in use; a circuit board 7 is arranged on the rear side of the operation panel 4, and a switch circuit is arranged on the circuit board 7; the front side of the operation panel 4 is provided with four key boards, three of which are small key boards 1 and the other is a large key board 2, for triggering the switch circuit when pressed.
As shown in fig. 2, the rear side of the operation panel 4 is provided with a first elastic member 5 and a second elastic member 6, the first elastic member 5 applies a forward elastic force to the small key sheet 1 when the small key sheet 1 is pressed backward, and the second elastic member 6 applies a forward elastic force to the large key sheet 2 when the large key sheet 2 is pressed backward, so that not only can the pressing feeling of the operator be improved, but also a noise cancellation effect can be provided.
As shown in fig. 3, a set of holes is formed on the operation panel 4 corresponding to each small key board 1, and the set of holes includes a first fastening hole 41, a first key hole 42, a first positioning hole 43, and a first through hole 44.
In this embodiment, the number of the first fastening holes 41 is two, as shown in fig. 9 and 11, the first fasteners 12 are disposed on the small keypad 1, the first fasteners 12 correspond to the first fastening holes 41 one by one, the first fasteners 12 are inserted into the first fastening holes 41 to achieve fastening, and the small keypad 1 is mounted on the operation panel 4.
In this embodiment, the first key hole 42 is for the touch key 3 to pass through, and the first key hole 42 corresponds to the first pressing protrusion 11 on the small key board 1, so that when the operator presses the small key board 1, the touch key 3 is pressed by the first pressing protrusion 11 to realize circuit conduction.
In this embodiment, the number of the first through holes 44 is four, and the first through holes 44 penetrate through the operation panel 4 in the front-rear direction, as shown in fig. 5 and 6, the first elastic member 5 includes a first base 52, the rear side of the first base 52 is supported on the circuit board 7, the first base 52 is provided with a first avoiding hole 54, and the first avoiding hole 54 is used for exposing the movable pressing portion 32 of the light touch key 3; the front side of the first base 52 is provided with a first pushing protrusion 51, the first pushing protrusion 51 corresponds to the first through hole 44 one by one, the first pushing protrusion 51 penetrates the first through hole 44, and the front end of the first pushing protrusion 51 is exposed out of the first through hole 44, so that the first pushing protrusion 51 is in contact with the small keypad 1. Wherein, the outer peripheral surface of the first pushing projection 51 is a smooth surface.
In this embodiment, the number of the first positioning holes 43 is two, the front side of the first base 52 is further provided with first positioning posts 53 in a protruding manner, the first positioning posts 53 correspond to the first positioning holes 43 one by one, and the first positioning posts 53 are in guiding fit with the first positioning holes 43, so as to prevent the first elastic element 5 from moving in a plane perpendicular to the front-back direction. The first positioning post 53 and the first positioning hole 43 together constitute a positioning structure.
As shown in fig. 6, the first base 52 has a first groove 57 with a backward opening, that is, the opening of the first groove 57 faces away from the operation panel 4, and the first base 52 is formed in a cup structure by providing the first groove 57 on the first base 52, so that the deformation amount of the first base 52 can be increased, and the tactile sensation of the operator can be further increased.
In this embodiment, the first key avoiding groove 55 is formed on the bottom wall of the first groove 57, the first groove 57 and the first key avoiding groove 55 form the first step structure 56, the first avoiding hole 54 is formed in the first key avoiding groove 55, and the first key avoiding groove 55 corresponds to the tact key 3 on the circuit board 7 to accommodate at least a part of the thickness of the tact key 3, so as to better avoid the tact key 3 and the soldering terminal 31 of the tact key 3, and avoid the first substrate 52 from interfering with the tact key 3 and the soldering terminal 31 of the tact key 3 when the first substrate 52 is elastically deformed.
As shown in fig. 4, the positioning protrusions 49 are provided at the rear side of the operation panel 4 corresponding to the positions of the first elastic members 5, the positioning protrusions 49 are provided in pairs, and the positioning protrusions 49 can position the corresponding first elastic members 5 mounted on the operation panel 4, so that the first elastic members 5 can be mounted conveniently, and the first elastic members 5 can be limited, thereby preventing the first elastic members 5 from moving in the arrangement direction of the two positioning protrusions 49.
As shown in fig. 3, a group of holes is disposed on the operation panel 4 corresponding to the large key sheet 2, and the group of holes includes a second fastening hole 45, a second key hole 46, a second positioning hole 47, and a second through hole 48.
In this embodiment, the number of the second fastening holes 45 is four, as shown in fig. 10 and 11, the second fasteners 22 are disposed on the large key board 2, the second fasteners 22 correspond to the second fastening holes 45 one to one, the second fasteners 22 are inserted into the second fastening holes 45 to achieve fastening, and the large key board 2 is mounted on the operation panel 4.
In this embodiment, the large key board 2 corresponds to two light touch keys 3, the number of the corresponding second key holes 46 is two, and the light touch keys 3 pass through the second key holes 46; be equipped with two seconds on big keypad 2 and press protruding 21, two seconds press protruding 21 to set up respectively at the both ends of big keypad 2, and the second is pressed protruding 21 and second key hole 46 one-to-one, when the operator pressed big keypad 2, presses down protruding 21 through the second and presses the light touch button 3 realization circuit and switches on.
As shown in fig. 10, since the large key sheet 2 is long, the reinforcing rib 23 is provided in the middle of the large key sheet 2, and the reinforcing rib can increase the strength of the large key sheet 2 and increase the service life of the large key sheet 2. Wherein the reinforcing ribs 23 are of an annular structure.
In this embodiment, the number of the second through holes 48 is four, and the second through holes 48 penetrate the operation panel 4 in the front-rear direction; the number of the second elastic members 6 is two, wherein two second through holes 48 correspond to one second elastic member 6, and the other two second through holes 48 correspond to the other second elastic member 6. Taking one of the second elastic members 6 as an example to be matched with the two second through holes 48, as shown in fig. 7 and 8, the second elastic member 6 includes a second base 62, the rear side of the second base 62 is supported on the circuit board 7, the second base 62 is provided with a second avoiding hole 64, and the second avoiding hole 64 allows the movable pressing portion 32 of the light touch key 3 to be exposed; the front side of the second base 62 is provided with two second pushing protrusions 61, the number of the second pushing protrusions 61 is two, the two second pushing protrusions 61 correspond to the two second through holes 48 one by one, the second pushing protrusions 61 penetrate the second through holes 48, and the front ends of the second pushing protrusions 61 are exposed out of the second through holes 48, so that the second pushing protrusions 61 are in contact with the large key board 2. Wherein, the peripheral surface of the second pushing projection 61 is a smooth surface.
In this embodiment, the first elastic member 5 and the second elastic member 6 are made of silica gel, and the silica gel material has a large deformation amount and a noise elimination effect, so that the noise of the touch key 3 when being pressed can be reduced. In other embodiments, the first elastic member and the second elastic member may be made of other materials having better elasticity.
In this embodiment, the number of the second positioning holes 47 is four, two of the second positioning holes 47 correspond to one second elastic member 6, and the other two second positioning holes 47 correspond to the other second elastic member 6. Taking one of the second elastic members 6 as an example to be matched with two second positioning holes 47, the front side of the second base 62 is provided with two second positioning posts 63 in a protruding manner, the two second positioning posts 63 are in one-to-one correspondence with the two second positioning holes 47, and the second positioning posts 63 are in guiding fit with the second positioning holes 47 to prevent the second elastic members 6 from moving in a plane perpendicular to the front-back direction. The second positioning posts 63 and the second positioning holes 47 together form a positioning structure.
As shown in fig. 8, the second base 62 has a second groove 67 with a backward opening, that is, the opening of the second groove 67 faces away from the operation panel 4, and the second base 62 is formed in a cup structure by providing the second groove 67 on the second base 62, so that the deformation amount of the second base 62 can be increased, and the tactile sensation of the operator can be further increased.
In this embodiment, the second key avoiding groove 65 is formed in the bottom wall of the second groove 67, the second groove 67 and the second key avoiding groove 65 form a second step structure 66, the second avoiding hole 64 is formed in the second key avoiding groove 65, and the second key avoiding groove 65 corresponds to the light touch key 3 on the circuit board 7 to accommodate at least a part of the thickness of the light touch key 3, so that the second groove 67 can better avoid the light touch key 3 and the solder leg 31 of the light touch key 3, and the second substrate 62 is prevented from interfering with the light touch key 3 and the solder leg 31 of the light touch key 3 when being elastically deformed.
As shown in fig. 2 and 11, taking the first elastic member 5 and the small key sheet 1 as an example, when assembling, the small key sheet 1 is clamped on the operation panel 4 from the front side of the operation panel 4, and the first elastic member 5 is installed on the operation panel 4 from the rear side of the operation panel 4, so that the first elastic member 5 does not occupy the space on the front side of the operation panel 4, the whole thickness of the operation panel 4 is small, and the temperature controller is favorable for being light and thin. Moreover, the first elastic piece 5 is assembled on the operation panel 4, so that the processing requirement on the operation panel 4 is low, and the effects of simple structure and convenience in installation are achieved.
The specific embodiment 2 of the temperature controller of the invention:
the difference from embodiment 1 is that in embodiment 1, a avoiding hole is formed in the base body, and the avoiding hole is used for avoiding a light touch key on the circuit board so as to trigger the light touch key when an operator presses the key board to realize circuit conduction.
In other embodiments, the touch key may be replaced by a silicone key.
The specific embodiment 3 of the temperature controller of the invention:
the difference with embodiment 1 is that, in embodiment 1, the base body has a groove with a backward opening, the avoiding hole is formed in the groove bottom wall of the groove, the groove can avoid the light touch key and the solder leg, and can ensure that the base body has a good deformation amount when being pressed by the key board.
The specific embodiment 4 of the temperature controller of the invention:
the difference from embodiment 1 is that in embodiment 1, the front side of the base body is provided with a positioning column in a protruding manner, the operation panel is provided with a positioning hole, and the positioning column and the positioning hole are assembled together in a guiding manner so as to ensure that the base body does not move in a plane perpendicular to the front-back direction.
In other embodiments, a positioning rib plate may be disposed at the rear side of the operation panel, the positioning rib plate forms an enclosure frame, and the base body is integrally placed in the enclosure frame to position the base body through the positioning rib plate, so as to ensure that the base body does not move in a plane perpendicular to the front-back direction.
The specific embodiment 5 of the temperature controller of the invention:
the difference from embodiment 1 is that in embodiment 1, an elastic member is disposed on the operation panel corresponding to each of the light touch buttons, and each of the elastic members is separately disposed to facilitate processing.
The specific embodiment 6 of the temperature controller of the invention:
the difference from embodiment 1 is that in embodiment 1, the front end of the pushing protrusion is exposed outside the through hole to increase the length of the pushing protrusion, thereby ensuring a better deformation amount.
In embodiment 1 of the key structure of the present invention, the key structure includes an elastic member, an operation panel and a key plate, and the elastic member, the operation panel and the key plate in this embodiment are the same as the first elastic member, the operation panel and the small key plate in any one of embodiments 1 to 6 of the temperature controller, and are not described herein again.
In embodiment 2 of the key structure of the present invention, the key structure includes an elastic member, an operation panel and a key plate, and the elastic member, the operation panel and the key plate in this embodiment are the same as the second elastic member, the operation panel and the large key plate in any one of embodiments 1 to 6 of the temperature controller, and are not described herein again.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims (10)

1. A key structure comprising:
an operation panel having a front side and a rear side, the front side of the operation panel facing an operator when in use, the rear side of the operation panel facing away from the operator when in use;
a circuit board arranged at the rear side of the operation panel and provided with a switch circuit;
a key sheet provided on the front side of the operation panel and used for triggering the switch circuit when pressed;
it is characterized by also comprising:
the elastic piece is arranged on the rear side of the operation panel and used for applying forward elastic acting force to the key board, the elastic piece comprises a base body and a pushing bulge, the rear side of the base body is supported on the circuit board, and the pushing bulge is arranged on the base body in a forward protruding mode;
the push button comprises a push button plate, a push button boss and an elastic piece, wherein the push button plate is provided with a through hole, the through hole penetrates through the operation panel in the front-back direction, and the push button boss is inserted into the through hole so that the elastic piece bears the pressing of the push button plate when the push button plate is pressed down.
2. The key structure of claim 1, wherein the base has a rearwardly opening recess to provide the base with a cup-like configuration.
3. The key structure according to claim 1, wherein a positioning structure is provided between the elastic member and the operation panel, the positioning structure being configured to position the elastic member in a plane perpendicular to the front-rear direction.
4. The key structure according to claim 3, wherein the positioning structure comprises a positioning post and a positioning hole, the positioning post and the positioning hole are in positioning fit, the positioning post is arranged on one of the elastic member and the operation panel, and the positioning hole is arranged on the other of the elastic member and the operation panel.
5. The key structure according to any one of claims 1 to 4, wherein the outer peripheral surface of the pushing projection is a smooth surface.
6. The key structure according to any one of claims 1 to 4, wherein a tact key is provided on the circuit board, and the tact key is used for triggering the switch circuit;
the rear side face of the base body is provided with a key avoiding groove, and the key avoiding groove corresponds to the light touch key on the circuit board so as to accommodate at least part of the thickness of the light touch key.
7. The key structure according to claim 6, wherein the bottom of the key escape groove is provided with an escape hole for exposing the movable pressing portion of the tact key, and the bottom of the key escape groove covers a portion of the tact key.
8. The key structure of claim 2, wherein the switch circuit is a copper foil loop disposed on a circuit board;
and a conductive layer is arranged on the groove wall of the groove, or an independent silica gel key is arranged in front of the substrate and the circuit board, a conductive layer is arranged on the rear side of the silica gel key, and the conductive layer is used for triggering the copper foil loop.
9. The key structure according to any one of claims 1 to 4, wherein the elastic member is made of silicone.
10. The temperature controller comprises a panel part and a bottom shell part;
wherein the panel portion has the key structure of any of claims 1-9.
CN202010574040.2A 2020-06-22 2020-06-22 Key structure and temperature controller using same Pending CN112053874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010574040.2A CN112053874A (en) 2020-06-22 2020-06-22 Key structure and temperature controller using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010574040.2A CN112053874A (en) 2020-06-22 2020-06-22 Key structure and temperature controller using same

Publications (1)

Publication Number Publication Date
CN112053874A true CN112053874A (en) 2020-12-08

Family

ID=73602139

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010574040.2A Pending CN112053874A (en) 2020-06-22 2020-06-22 Key structure and temperature controller using same

Country Status (1)

Country Link
CN (1) CN112053874A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114241942A (en) * 2021-12-07 2022-03-25 巴可(苏州)医疗科技有限公司 Positioning and mounting structure and method for indicator lamp of medical display
CN115020135A (en) * 2022-06-09 2022-09-06 温州港源电子有限公司 Tact switch and production process thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114241942A (en) * 2021-12-07 2022-03-25 巴可(苏州)医疗科技有限公司 Positioning and mounting structure and method for indicator lamp of medical display
CN115020135A (en) * 2022-06-09 2022-09-06 温州港源电子有限公司 Tact switch and production process thereof
CN115020135B (en) * 2022-06-09 2024-04-26 温州港源电子有限公司 Tact switch and production process thereof

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