CN112117144A - Button and backlight system of CT control panel - Google Patents
Button and backlight system of CT control panel Download PDFInfo
- Publication number
- CN112117144A CN112117144A CN202010909635.9A CN202010909635A CN112117144A CN 112117144 A CN112117144 A CN 112117144A CN 202010909635 A CN202010909635 A CN 202010909635A CN 112117144 A CN112117144 A CN 112117144A
- Authority
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- China
- Prior art keywords
- key
- elastic sheet
- backlight
- metal elastic
- magnetic
- 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
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- 239000002184 metal Substances 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000007787 solid Substances 0.000 claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
- H01H13/023—Light-emitting indicators
-
- 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
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
Abstract
The invention provides a key and a backlight system of a CT control panel, which relate to the technical field of CT control panels, are arranged on a PCB and comprise a solid key, a magnetic key arranged below the solid key and a backlight arranged below the magnetic key; the magnetic key comprises a metal elastic sheet and magnets positioned on two sides of the metal elastic sheet, and a bulge in the middle of the metal elastic sheet is in contact with the solid key; when the solid key is not pressed down, the metal elastic sheet is attracted with the magnet; when the solid key is pressed down, the metal elastic sheet is separated from the magnet, and the bottoms of the two sides of the metal elastic sheet are contacted with the copper-exposed part of the PCB; the backlight lamp is positioned below the through hole of the magnetic button and fixed on the PCB circuit board. The invention adopts the magnetic spring plate key, the backlight adopts the front through hole backlight, and the backlight lamp is directly arranged below the magnetic spring plate, thereby realizing ideal backlight brightness without punching a through hole on the circuit board, simultaneously improving the antistatic property of the circuit board and improving the reliability of the control panel.
Description
Technical Field
The invention relates to a key and backlight system of a CT control panel, belonging to the technical field of CT control panels.
Background
Before CT clinical scanning, a doctor needs to perform a series of positioning and positioning actions to enable a detected object to be in a proper detected position, and the series of operations are all realized on a control panel of the CT. The CT control panel is provided with more than ten functional keys which are respectively used for controlling the movement of the CT frame and the sickbed, the on-off of the laser lamp, the resetting of the emergency stop and the on-off light, the breathing training and other functions. Due to the fact that the number of the function keys is large, in order to avoid misoperation of a doctor, corresponding icons need to be displayed on the corresponding keys, and the enabling states of the keys are indicated by the brightness of the icons. Because the CT control panel is frequently used and has higher requirements on the service life and the reliability of the keys, the stable and reliable keys and the corresponding backlight scheme need to be selected, and the clinical use is met on the premise of not damaging the reliability of the components.
There are two kinds of control panels for existing CT, one is a touch screen control panel, and the other is a physical key control panel. The reliability of the touch screen control panel is lower than that of a physical key control panel. Most CT control panels in the market at present adopt solid key control panels. The physical keys are of various types, made of different materials and touch control modes, and have great influence on the actual service life and use. The CT control panel has high requirements for the backlight of the keys besides the hand feeling and the life of the keys, and an operator needs to determine the enabling state of the keys according to the color prompt of the backlight on the control panel, so as to perform corresponding operations. The unclear backlight directly affects the normal use of the operator. However, most of CT manufacturers adopt customized keys and backlight lamps, the backlight lamps need to penetrate through the keys to enable icons on the keys to be uniformly lightened, and the backlight lamps are located right below the keys, so that installation is troublesome, through holes need to be dug in a circuit board, and light can penetrate from the back. This way of breaking the circuit board weakens the antistatic ability of the circuit board, increasing the unreliability of the control panel.
The present application was made based on this.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a key and a backlight system of a CT control panel, which ensure the antistatic performance of a circuit board and improve the reliability of the control panel.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a button and backlight system of a CT control panel is arranged on a PCB circuit board and comprises a solid button, a magnetic button arranged below the solid button and a backlight arranged below the magnetic button; the magnetic key comprises a metal elastic sheet and magnets positioned on two sides of the metal elastic sheet, and a bulge in the middle of the metal elastic sheet is in contact with the solid key; when the solid key is not pressed down, the metal elastic sheet is attracted with the magnet; when the solid key is pressed down, the metal elastic sheet is separated from the magnet, and the bottoms of the two sides of the metal elastic sheet are contacted with the copper-exposed part of the PCB; the backlight lamp is positioned below the through hole of the magnetic button and fixed on the PCB; a conductive carbon film is laid on the copper-exposed part of the PCB; the backlight lamp adopts high-brightness LEDs and independent driving chips, each chip can drive 24 paths of LEDs, and the brightness adjusting range is 0-255.
Furthermore, an adhesive layer is arranged between the part of the entity key, which is not provided with the magnetic key, and the PVB circuit board.
Furthermore, each driving chip can drive 24 paths of LEDs, and the brightness adjusting range is 0-255.
Furthermore, 6 high-brightness LEDs can be mounted below each magnetic spring piece through hole at most.
The principle and the beneficial technical effects of the invention are as follows:
(1) the invention adopts the magnetic spring plate key (the key consisting of the magnet and the metal spring plate), the backlight adopts the front through hole backlight, the light transmission hole is reserved in the key, the backlight lamp can conveniently transmit light, and the backlight lamp is directly arranged below the magnetic spring plate, so that the ideal backlight brightness can be realized without punching the through hole on the circuit board, meanwhile, the antistatic performance of the circuit board is improved, and the reliability of the control panel is improved.
(2) A carbon film is laid on the position of the PCB, which is in contact with the magnetic elastic sheet, so that the contact area of the metal elastic sheet is increased, and the oxidation resistance of the contact surface is improved.
(3) High bright LED of button light trap below installation, high bright LED size is little, and luminance is high, and 6 high bright LEDs that adopt of mountable at most in every magnetic force shell fragment via hole below can be with single colour LED, also can use colour mixture LED, when using a red light, a blue light, when a green light was put up, install them on the circuit board according to the star, can realize the regulation of multiple colour through the bright regulation of going out of 3 lamps of control.
Drawings
FIG. 1 is a schematic structural diagram of a key and a backlight system of a CT control panel according to embodiment 1 (when the button is not pressed);
FIG. 2 is a schematic structural diagram of a key and a backlight system of a CT control panel according to embodiment 2 (when the button is not pressed);
fig. 3 is a schematic structural diagram of a key and a backlight system of a CT control panel according to embodiment 2 (when the button is pressed).
Description of the labeling: the PCB comprises a PCB circuit board 1, a solid key 2, a magnetic elastic sheet 3, a magnet 31, a metal elastic sheet 32, a via hole 33, an adhesive layer 4, a conductive carbon film 5 and a backlight 6.
Detailed Description
In order to make the technical means and technical effects achieved by the technical means of the present invention more clearly and more perfectly disclosed, the following embodiments are provided, and the following detailed description is made with reference to the accompanying drawings:
example 1
As shown in fig. 1, the button and backlight system of the CT control panel of the present embodiment is mounted on a PCB, and includes a physical button, a magnetic button mounted below the physical button, and a backlight mounted below the magnetic button; the magnetic key comprises a metal elastic sheet and magnets positioned on two sides of the metal elastic sheet, and a bulge in the middle of the metal elastic sheet is in contact with the solid key; when the solid key is not pressed down, the metal elastic sheet is attracted with the magnet; when the solid key is pressed down, the metal elastic sheet is separated from the magnet, and the bottoms of the two sides of the metal elastic sheet are contacted with the copper-exposed part of the PCB; the backlight lamp is positioned below the through hole (light hole) of the magnetic button and is welded on the PCB. After the key is pressed down, the magnetic force generated by the distance between the two sides of the metal elastic sheet and the magnet is still smaller than the gravity of the metal elastic sheet, so that the metal elastic sheet is not enough to be attracted under the condition of no external force.
In the embodiment, the conductive carbon film is laid on the copper-exposed part of the PCB, so that the conductivity of the key can be increased, and the oxidation of the contact surface of the key can be prevented.
In this embodiment, a glue layer is arranged between the part of the solid key, where the magnetic key is not installed, and the PVB circuit board, and the double-sided tape is adopted in this embodiment, so that the key and the PCB circuit board are conveniently fixed and connected.
In this embodiment, the backlight is a high-brightness LED, and an independent driving chip is adopted, each chip can drive 24 channels of LEDs, and the brightness adjustment range is 0-255 th.
In this embodiment, 6 high bright LEDs can be installed at most below each magnetic spring piece via hole, namely, a single-color LED and a mixed-color LED can be used, when a red lamp, a blue lamp and a green lamp are used for matching, the red lamp, the blue lamp and the green lamp are installed on the circuit board in a star shape, and the adjustment of various colors can be realized by controlling the on/off of 3 lamps.
Example 2
As shown in fig. 2 and fig. 3, the button and backlight system of the CT control panel of the present embodiment is mounted on a PCB, and includes a physical button, a magnetic button mounted below the physical button, and a backlight mounted below the magnetic button; the magnetic key comprises a metal elastic sheet and magnets positioned on two sides of the metal elastic sheet, and a bulge in the middle of the metal elastic sheet is in contact with the solid key; as shown in fig. 2, when the physical key is not pressed, the metal dome and the magnet are attracted; as shown in fig. 3, when the physical key is pressed, the metal spring is separated from the magnet, the bottoms of the two sides of the metal spring are contacted with the copper exposed part of the PCB, and the circuit is communicated; the backlight lamp is positioned below the through hole (light hole) of the magnetic button and is welded on the PCB.
The difference between this embodiment and embodiment 1 is that the solid button of this embodiment is a relatively flat button, and the shape of the metal dome is different from the shape of the metal dome in embodiment 1.
Compared with the traditional mode of digging a through hole at the back, the LED light of the embodiment has higher utilization efficiency and better signal integrity of the circuit board.
The above description is provided for the purpose of further elaboration of the technical solutions provided in connection with the preferred embodiments of the present invention, and it should not be understood that the embodiments of the present invention are limited to the above description, and it should be understood that various simple deductions or substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and all such alternatives are included in the scope of the present invention.
Claims (3)
1. The utility model provides a CT control panel's button and backlight system, installs on the PCB circuit board which characterized in that: comprises a solid key, a magnetic key arranged below the solid key and a backlight arranged below the magnetic key; the magnetic key comprises a metal elastic sheet and magnets positioned on two sides of the metal elastic sheet, and a bulge in the middle of the metal elastic sheet is in contact with the solid key; when the solid key is not pressed down, the metal elastic sheet is attracted with the magnet; when the solid key is pressed down, the metal elastic sheet is separated from the magnet, and the bottoms of the two sides of the metal elastic sheet are contacted with the copper-exposed part of the PCB; the backlight lamp is positioned below the through hole of the magnetic button and fixed on the PCB; a conductive carbon film is laid on the copper-exposed part of the PCB; the backlight lamp adopts a high-brightness LED and an independent driving chip.
2. The button and backlight system of a CT control panel of claim 1, wherein: and an adhesive layer is arranged between the part of the entity key, which is not provided with the magnetic key, and the PVB circuit board.
3. The button and backlight system of a CT control panel of claim 1, wherein: at most 6 high-brightness LEDs can be arranged below each magnetic elastic sheet through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010909635.9A CN112117144A (en) | 2020-09-02 | 2020-09-02 | Button and backlight system of CT control panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010909635.9A CN112117144A (en) | 2020-09-02 | 2020-09-02 | Button and backlight system of CT control panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112117144A true CN112117144A (en) | 2020-12-22 |
Family
ID=73803950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010909635.9A Pending CN112117144A (en) | 2020-09-02 | 2020-09-02 | Button and backlight system of CT control panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112117144A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202142452U (en) * | 2011-03-24 | 2012-02-08 | 杭州瑞高智能设备有限公司 | Pressure detection switch |
| CN103714997A (en) * | 2012-10-02 | 2014-04-09 | 群光电子股份有限公司 | Thin pressure type key structure |
| CN206349280U (en) * | 2016-10-25 | 2017-07-21 | 比亚迪股份有限公司 | A kind of key device and vehicle |
| CN207852544U (en) * | 2018-01-24 | 2018-09-11 | 广州市嘉艺电子薄膜开关有限公司 | Embedded surface touches thin film switch |
| CN210925820U (en) * | 2019-07-22 | 2020-07-03 | 薛慎彬 | Push type switch with light transmission structure |
-
2020
- 2020-09-02 CN CN202010909635.9A patent/CN112117144A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202142452U (en) * | 2011-03-24 | 2012-02-08 | 杭州瑞高智能设备有限公司 | Pressure detection switch |
| CN103714997A (en) * | 2012-10-02 | 2014-04-09 | 群光电子股份有限公司 | Thin pressure type key structure |
| CN206349280U (en) * | 2016-10-25 | 2017-07-21 | 比亚迪股份有限公司 | A kind of key device and vehicle |
| CN207852544U (en) * | 2018-01-24 | 2018-09-11 | 广州市嘉艺电子薄膜开关有限公司 | Embedded surface touches thin film switch |
| CN210925820U (en) * | 2019-07-22 | 2020-07-03 | 薛慎彬 | Push type switch with light transmission structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201222 |