CN115223814A - Keyboard with a keyboard body - Google Patents
Keyboard with a keyboard body Download PDFInfo
- Publication number
- CN115223814A CN115223814A CN202110426545.9A CN202110426545A CN115223814A CN 115223814 A CN115223814 A CN 115223814A CN 202110426545 A CN202110426545 A CN 202110426545A CN 115223814 A CN115223814 A CN 115223814A
- Authority
- CN
- China
- Prior art keywords
- keycap
- top surface
- vertical distance
- keyboard
- light emitting
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- 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.)
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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
- H01H13/70—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
- H01H13/83—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 legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
Landscapes
- Push-Button Switches (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
本发明关于一种键盘，包含底板、薄膜开关层、框架、发光元件、键帽以及升降机构。发光元件设置于框架的贯通开口内。当键帽位于未按压位置时，框架的第一顶表面至薄膜开关层的上表面的第一垂直距离被定义。薄膜开关层的上表面至发光元件的第二顶表面的第二垂直距离被定义。发光元件的光轴与框架的贯通开口的内侧壁之间的水平距离系等于或大于预定距离。预定距离藉由第一垂直距离、第二垂直距离以及环绕发光元件的光轴的光覆盖区的夹角所计算。藉此，本发明中由发光元件所发射且射向框架的第一顶表面的光线不会由第一顶表面散射至使用者的眼睛。
The present invention relates to a keyboard, comprising a base plate, a membrane switch layer, a frame, a light-emitting element, a key cap and a lifting mechanism. The light emitting element is arranged in the through opening of the frame. A first vertical distance from the first top surface of the frame to the upper surface of the membrane switch layer is defined when the keycap is in the unpressed position. A second vertical distance from the upper surface of the membrane switch layer to the second top surface of the light emitting element is defined. The horizontal distance between the optical axis of the light-emitting element and the inner sidewall of the through opening of the frame is equal to or greater than a predetermined distance. The predetermined distance is calculated by the first vertical distance, the second vertical distance and the included angle of the light coverage area surrounding the optical axis of the light emitting element. Therefore, in the present invention, the light emitted by the light-emitting element and directed to the first top surface of the frame will not be scattered by the first top surface to the eyes of the user.
Description
Technical Field
The present invention relates to a keyboard, and more particularly, to a keyboard including a light emitting device and a frame, wherein light emitted from the light emitting device is not scattered to eyes of a user through a top surface of the frame.
Background
Keyboards are already a common input peripheral device on the market. Most of the prior art keyboards employ light emitting elements emitting light upward as light sources of indicating lamps (e.g., case-locking turn-on indicating lamps) defined on a plurality of key caps. The existing keyboard also adopts a light-emitting element which emits light upwards as a backlight source of the light-emitting key.
However, the prior art keyboard employs a light emitting element for emitting light upward, and because the geometric relationship between the position of the light emitting element and the elements and members of the keyboard is not considered, the light emitted by the light emitting element and directed to the frame is often scattered to the eyes of the user from the top surface of the frame.
Disclosure of Invention
The present invention provides a keyboard including a light emitting device and a frame, wherein light emitted from the light emitting device is not scattered to eyes of a user from a top surface of the frame.
According to one aspect of the present invention, the present invention provides a keyboard, comprising:
a bottom plate having a first through hole;
the membrane switch layer is provided with a second through hole and an upper surface and is arranged on the bottom plate so that the second through hole is aligned with the first through hole;
a frame having a through opening with an inner sidewall and a first top surface, the frame disposed on the membrane switch layer such that the second via is located below the through opening;
a light emitting device having a second top surface, an optical axis perpendicular to the second top surface, and an upward light-covered region surrounding the optical axis, the light-covered region having an included angle (2 θ), the light emitting device being disposed in the first through hole;
a keycap disposed over the through opening and having a lower side edge; and
a lifting mechanism disposed between the base plate and the keycap, the lifting mechanism limiting the keycap to move between an un-pressed position and a pressed position, wherein when the keycap is located at the pressed position, the lower side edge of the keycap is located in the through opening, when the keycap is located at the un-pressed position, a vertical distance from the first top surface of the frame to the upper surface of the thin film switch layer is defined as a first vertical distance (X), a vertical distance from the upper surface of the thin film switch layer to the second top surface of the light emitting element is defined as a second vertical distance (Y), a horizontal distance between the optical axis of the light emitting element and the inner sidewall is equal to or greater than a predetermined distance (Q), and the predetermined distance (Q) is calculated by the following formula: q = (X + Y) × tan (θ).
As an optional technical solution, the included angle of the light coverage area ranges from 110 degrees to 140 degrees.
As an optional technical solution, the method further comprises:
the circuit board, this light-emitting component electrical behavior is jointed on this circuit board, this circuit board sets up on the lower surface of this bottom plate.
As an optional technical solution, the membrane switch layer includes a switch, the switch is located below the keycap, and the keyboard further includes:
and the elastic actuating element is arranged between the keycap and the bottom plate and is positioned above the switch, wherein when the keycap is pressed and moves to the pressing position, the elastic actuating element deforms to cause the switch to be opened, when the keycap is released, the elastic actuating element provides restoring force required by the keycap to return to the non-pressing position, and the switch is closed.
As an optional technical solution, when the keycap is located at the non-pressed position, the lower side edge of the keycap is higher than the first top surface of the frame, the first vertical distance is a positive value, the second top surface of the light emitting element is lower than the upper surface of the thin film switch layer, and the second vertical distance is a positive value.
As an optional technical solution, when the keycap is located at the non-pressed position, the lower side edge of the keycap is higher than the first top surface of the frame, the first vertical distance is a positive value, the second top surface of the light emitting element is higher than the upper surface of the thin film switch layer, and the second vertical distance is a negative value.
As an optional technical solution, when the keycap is located at the non-pressed position, the lower side edge of the keycap is lower than or flush with the first top surface of the frame, the first vertical distance is a positive value, the second top surface of the light emitting element is higher than the upper surface of the thin film switch layer, and the second vertical distance is a negative value.
As an optional technical solution, the second top surface of the light emitting element is lower than the first top surface of the frame.
As an optional technical solution, when the keycap is located at the non-pressed position, the lower side edge of the keycap is lower than or flush with the first top surface of the frame, the first vertical distance is a positive value, the second top surface of the light emitting element is lower than the upper surface of the thin film switch layer, and the second vertical distance is a positive value.
In summary, unlike the prior art, the keyboard of the present invention comprises a light emitting device and a frame for emitting light upward, and the geometrical relationship between the position of the light emitting device and the elements and members of the keyboard is designed to prevent the light emitted from the light emitting device and directed to the frame from scattering from the top surface of the frame to the eyes of the user.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is an external view of a keyboard according to a preferred embodiment of the present invention;
FIG. 2 isbase:Sub>A partial cross-sectional view of the keys of the keyboard of FIG. 1 taken along line A-A;
FIG. 3 isbase:Sub>A partial cross-sectional view ofbase:Sub>A variation of the keys of the keyboard of FIG. 1 taken along line A-A;
FIG. 4 isbase:Sub>A partial cross-sectional view of another variation of the keys of the keyboard of FIG. 1 taken along line A-A;
fig. 5 isbase:Sub>A partial cross-sectional view of another variation of the keys of the keyboard of fig. 1 taken along linebase:Sub>A-base:Sub>A.
Detailed Description
Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5. Fig. 1 schematically shows a keyboard 1 according to a preferred embodiment of the present invention in an external view. Fig. 2 isbase:Sub>A partial cross-sectional view of the key 2 of the keypad 1 of fig. 1 along the linebase:Sub>A-base:Sub>A. Fig. 3 isbase:Sub>A partial cross-sectional view ofbase:Sub>A variation of the keys 2 of the keyboard 1 of fig. 1 along linebase:Sub>A-base:Sub>A. Fig. 4 isbase:Sub>A partial cross-sectional view of another variation of the keys 2 of the keypad 1 of fig. 1 along linebase:Sub>A-base:Sub>A. Fig. 5 isbase:Sub>A partial cross-sectional view of another variation of the keys 2 of the keypad 1 of fig. 1 along linebase:Sub>A-base:Sub>A.
As shown in fig. 1 and 2, the keyboard 1 of the preferred embodiment of the present invention includes a key 2 provided with a light emitting element 23. The key cap 24 has a third top surface 240 and a light transmissive region 244. A light transmissive region 244 is formed on the third top surface 240 of the key cap 24. In the example shown in fig. 1 and 2, the light-transmitting area 244 represents an indicator light, but the invention is not limited thereto. In the keyboard 1 of the preferred embodiment of the present invention, the keys 2 may also be light-emitting keys 2. That is, the light-transmissive region 244 of the key cap 24 may also present a pattern representing one of a character, a number, a symbol, and a function key.
As shown in fig. 2, the key 2 includes a base 20, a thin film switch layer 21, a frame 22, a light emitting element 23, a key cap 24, and a lifting mechanism 25. If the light-transmissive region 244 of the key cap 24 represents an indicator light, the key 2 of the present invention may be provided with only one light-emitting element 23. If the key 2 of the present invention is a light-emitting key 2, the key 2 of the present invention may be provided with a plurality of light-emitting elements 23. In fig. 2, only one light emitting device 23 is shown as a representative. The light emitting element 23 is driven to emit light. Light emitted by the light emitting element 23 is directed toward the light transmissive region 244 of the key cap 24 and through the light transmissive region 244 of the key cap 24.
In one embodiment, each of the light emitting devices 23 may be a semiconductor light emitting diode device, an organic light emitting diode device, or the like.
The base plate 20 has a first through hole 202. The membrane switch layer 21 has a second via 214 and an upper surface 212. The membrane switch layer 21 is disposed on the base plate 20 such that the second through hole 214 of the membrane switch layer 21 is aligned with the first through hole 202 of the base plate 20.
The frame 22 has a through opening 222 and a first top surface 224. The through opening 222 of the frame 22 has an inner side wall 2222 adjacent the user's eye 3. The frame 22 is disposed on the thin film switch layer 21, such that the second through hole 214 of the thin film switch layer 21 is located below the through opening 222 of the frame 22.
The light emitting element 23 has a second top surface 232, an optical axis 234 perpendicular to the second top surface 232, and a light footprint Z surrounding the optical axis 234 and facing upward. The light footprint Z is substantially conical. The light footprint Z has an included angle (2 θ). The light emitting element 23 is disposed in the first through hole 202 of the base plate 20.
The key cap 24 is disposed over the through opening 222 and has a lower side edge 242. The elevating mechanism 25 is disposed between the base plate 20 and the key cap 24. The elevating mechanism 25 restricts the movement of the key cap 24 between the unpressed position and the pressed position. When the key cap 24 is in the depressed position, the underside edge 242 of the key cap 24 is positioned within the through opening 222 of the frame 22.
When the key cap 24 is located at the non-pressed position, a vertical distance from the first top surface 224 of the frame 22 to the upper surface 212 of the thin-film switch layer 21 is defined as a first vertical distance (X). The vertical distance from the upper surface 212 of the thin film switching layer 21 to the second top surface 232 of the light emitting element 23 is defined as a second vertical distance (Y). A horizontal distance (D) between the optical axis of the light emitting element 23 and the inner side wall 2222 of the through opening 222 is equal to or greater than a predetermined distance (Q). As long as the above condition is met, the light emitted by the light emitting element 23 is not scattered to the user's eye 3 by the second top surface 232 of the frame 22. It should be emphasized that, if the key 2 of the present invention is provided with a plurality of light emitting elements 23, the horizontal distance (D) refers to the distance between the optical axis of the light emitting element 23 closest to the inner sidewall 2222 of the through opening 222 among the plurality of light emitting elements 23 and the inner sidewall 2222 of the through opening 222.
The predetermined distance (Q) is calculated by the following equation:
Q＝(X+Y)×tan(θ)。
in one embodiment, the included angle (2 θ) of the light footprint Z may range from 110 degrees to 140 degrees.
In one embodiment, also shown in FIG. 2, when the keycap 24 is in the unpressed position, the underside edge 242 of the keycap 24 is higher than the first top surface 224 of the frame 22. The first vertical distance (X) is positive. The second top surface 232 of the light emitting element 23 is lower than the upper surface 212 of the thin-film switching layer 21. The second vertical distance (Y) is positive.
As shown in fig. 3, in a modification of the key 2 of the keyboard 1 according to the preferred embodiment of the invention, when the key cap 24 is located at the non-pressed position, the lower edge 242 of the key cap 24 is higher than the first top surface 224 of the frame 22. The first vertical distance (X) is positive. The second top surface 232 of the light emitting element 23 is higher than the upper surface 212 of the thin film switching layer 21. The second vertical distance (Y) is negative. The components in fig. 3 with the same numbers as those in fig. 2 have the same or similar structures and functions, and are not repeated herein.
In another variation of the key 2 of the keyboard 1 according to the preferred embodiment of the present invention, as shown in FIG. 4, when the key cap 24 is in the non-depressed position, the lower edge 242 of the key cap 24 is lower than the first top surface 224 of the frame 22 or flush with the first top surface 224 of the frame 22. The first vertical distance (X) is positive. The second top surface 232 of the light emitting element 23 is lower than the upper surface 212 of the thin-film switching layer 21. The second vertical distance (Y) is positive. The elements in fig. 4 having the same reference numbers as those in fig. 2 have the same or similar structures and functions, and are not repeated herein.
In another variation of the key 2 of the keyboard 1 according to the preferred embodiment of the present invention, as shown in FIG. 5, when the key cap 24 is in the non-depressed position, the lower edge 242 of the key cap 24 is lower than the first top surface 224 of the frame 22 or flush with the first top surface 224 of the frame 22. The first vertical distance (X) is positive. The second top surface 232 of the light emitting element 23 is higher than the upper surface 212 of the thin film switching layer 21. The second vertical distance (Y) is negative. The elements in fig. 5 having the same reference numerals as those in fig. 2 have the same or similar structures and functions, and are not repeated herein.
Further, as also shown in fig. 2, 3, 4 and 5, the keyboard 2 of the preferred embodiment of the present invention further includes a circuit board 26. The light emitting element 23 is electrically connected to the circuit board 26. The circuit board 26 is disposed on the lower surface 204 of the base plate 20, such that the light emitting element 23 is disposed in the first through hole 202 of the base plate 20.
Further, as also shown in fig. 2, 3, 4 and 5, the keyboard 2 of the preferred embodiment of the present invention further comprises a resilient actuating element 27. The membrane switch layer 21 contains a switch 216. The switch 216 is located below the keycap 24. The resilient actuating element 27 is disposed between the keycap 24 and the base plate 20, and above the switch 216. When the key cap 24 is pressed and moved to the pressed position, the resilient actuating element 27 deforms and causes the switch 216 to open. When the key cap 24 is released, the resilient actuation element 27 provides the restoring force required to return the key cap 24 to the unpressed position, and the switch 216 is closed.
From the above detailed description of the present invention, it is clear that the keyboard of the present invention includes the light emitting device emitting light upward and the frame, and the geometric relationship between the position where the light emitting device is disposed and the device and the member of the keyboard is planned in detail to avoid the light emitted by the light emitting device and emitted to the frame from scattering to the eyes of the user from the top surface of the frame.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (9)
1. A keyboard, comprising:
a bottom plate having a first through hole;
the membrane switch layer is provided with a second through hole and an upper surface, and the membrane switch layer is arranged on the bottom plate so that the second through hole is aligned with the first through hole;
a frame having a through opening with an inner sidewall and a first top surface, the frame disposed on the membrane switch layer such that the second via is located below the through opening;
a light emitting device having a second top surface, an optical axis perpendicular to the second top surface, and an upward light-covered region surrounding the optical axis, the light-covered region having an included angle (2 θ), the light emitting device being disposed in the first through hole;
a keycap disposed over the through opening and having a lower side edge; and
a lifting mechanism disposed between the base plate and the keycap, the lifting mechanism limiting the keycap to move between an un-pressed position and a pressed position, wherein when the keycap is located at the pressed position, the lower side edge of the keycap is located in the through opening, when the keycap is located at the un-pressed position, a vertical distance from the first top surface of the frame to the upper surface of the thin film switch layer is defined as a first vertical distance (X), a vertical distance from the upper surface of the thin film switch layer to the second top surface of the light emitting element is defined as a second vertical distance (Y), a horizontal distance between the optical axis of the light emitting element and the inner sidewall is equal to or greater than a predetermined distance (Q), and the predetermined distance (Q) is calculated by the following formula: q = (X + Y) × tan (θ).
2. The keyboard of claim 1, wherein the included angle of the light footprint ranges from 110 degrees to 140 degrees.
3. The keyboard of claim 2, further comprising:
the circuit board is arranged on the lower surface of the bottom plate.
4. The keyboard of claim 3, wherein the membrane switch layer comprises a switch located below the keycap, the keyboard further comprising:
and the elastic actuating element is arranged between the keycap and the bottom plate and is positioned above the switch, wherein when the keycap is pressed and moves to the pressing position, the elastic actuating element deforms to cause the switch to be opened, when the keycap is released, the elastic actuating element provides restoring force required by the keycap to return to the non-pressing position, and the switch is closed.
5. The keyboard of claim 4, wherein when the keycap is in the non-depressed position, the lower edge of the keycap is higher than the first top surface of the frame, the first vertical distance is positive, the second top surface of the light emitting element is lower than the upper surface of the thin film switch layer, and the second vertical distance is positive.
6. The keyboard of claim 4, wherein when the keycap is in the non-depressed position, the lower edge of the keycap is higher than the first top surface of the frame, the first vertical distance is positive, the second top surface of the light emitting element is higher than the upper surface of the membrane switch layer, and the second vertical distance is negative.
7. The keyboard of claim 4, wherein when the keycap is in the non-depressed position, the lower edge of the keycap is lower than or flush with the first top surface of the frame, the first vertical distance is positive, the second top surface of the light emitting element is higher than the upper surface of the membrane switch layer, and the second vertical distance is negative.
8. The keyboard as claimed in claim 6 or 7, wherein the second top surface of the light emitting element is lower than the first top surface of the frame.
9. The keyboard of claim 4, wherein when the keycap is in the non-depressed position, the lower edge of the keycap is below or flush with the first top surface of the frame, the first vertical distance is positive, the second top surface of the light emitting element is below the upper surface of the membrane switch layer, and the second vertical distance is positive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110426545.9A CN115223814B (en) | 2021-04-20 | 2021-04-20 | keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110426545.9A CN115223814B (en) | 2021-04-20 | 2021-04-20 | keyboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115223814A true CN115223814A (en) | 2022-10-21 |
| CN115223814B CN115223814B (en) | 2025-10-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110426545.9A Active CN115223814B (en) | 2021-04-20 | 2021-04-20 | keyboard |
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| Country | Link |
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| CN (1) | CN115223814B (en) |
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| CN202678169U (en) * | 2012-07-02 | 2013-01-16 | 常熟精元电脑有限公司 | Key module for luminescent keyboard |
| CN202721059U (en) * | 2012-07-06 | 2013-02-06 | 精元电脑股份有限公司 | Film light-guiding keyboard |
| US20140166457A1 (en) * | 2012-12-19 | 2014-06-19 | Primax Electronics Ltd. | Illuminated keyboard |
| US20160284493A1 (en) * | 2015-03-27 | 2016-09-29 | Primax Electronics Ltd. | Illuminated keyboard device |
| CN106384689A (en) * | 2016-10-28 | 2017-02-08 | 苏州达方电子有限公司 | Light emitting keyboard |
| TWI599918B (en) * | 2016-12-09 | 2017-09-21 | 致伸科技股份有限公司 | Luminous keyboard |
| TWI609398B (en) * | 2017-03-17 | 2017-12-21 | 致伸科技股份有限公司 | Keyboard device and method for manufacturing key frame of keyboard device |
| US20180053610A1 (en) * | 2016-08-19 | 2018-02-22 | Primax Electronics Ltd. | Lumnious keyboard |
| US20190115170A1 (en) * | 2017-10-13 | 2019-04-18 | Primax Electronics Ltd. | Luminous keyboard |
| CN110010397A (en) * | 2019-05-15 | 2019-07-12 | 光宝电子(广州)有限公司 | Luminous button |
| CN111128582A (en) * | 2018-10-31 | 2020-05-08 | 阿尔卑斯阿尔派株式会社 | Illuminating key switch |
-
2021
- 2021-04-20 CN CN202110426545.9A patent/CN115223814B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202678169U (en) * | 2012-07-02 | 2013-01-16 | 常熟精元电脑有限公司 | Key module for luminescent keyboard |
| CN202721059U (en) * | 2012-07-06 | 2013-02-06 | 精元电脑股份有限公司 | Film light-guiding keyboard |
| US20140166457A1 (en) * | 2012-12-19 | 2014-06-19 | Primax Electronics Ltd. | Illuminated keyboard |
| US20160284493A1 (en) * | 2015-03-27 | 2016-09-29 | Primax Electronics Ltd. | Illuminated keyboard device |
| US20180053610A1 (en) * | 2016-08-19 | 2018-02-22 | Primax Electronics Ltd. | Lumnious keyboard |
| CN106384689A (en) * | 2016-10-28 | 2017-02-08 | 苏州达方电子有限公司 | Light emitting keyboard |
| TWI599918B (en) * | 2016-12-09 | 2017-09-21 | 致伸科技股份有限公司 | Luminous keyboard |
| TWI609398B (en) * | 2017-03-17 | 2017-12-21 | 致伸科技股份有限公司 | Keyboard device and method for manufacturing key frame of keyboard device |
| US20190115170A1 (en) * | 2017-10-13 | 2019-04-18 | Primax Electronics Ltd. | Luminous keyboard |
| CN111128582A (en) * | 2018-10-31 | 2020-05-08 | 阿尔卑斯阿尔派株式会社 | Illuminating key switch |
| CN110010397A (en) * | 2019-05-15 | 2019-07-12 | 光宝电子(广州)有限公司 | Luminous button |
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| Publication number | Publication date |
|---|---|
| CN115223814B (en) | 2025-10-24 |
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