Key structure installed on transparent panel

Abstract

Some embodiments of the present specification provide a key structure mounted on a transparent panel, comprising: a PCB having a touch function, the PCB comprising a first surface and a second surface arranged opposite to each other, the first surface being connected with the transparent panel, the second surface being provided with at least one light emitting source, the PCB being provided with a first light hole; and the key bracket is arranged on the second surface, the key bracket comprises a reflection inclined surface, the reflection inclined surface is configured to reflect light rays of the at least one light emitting source to form reflection light rays, and the reflection light rays penetrate through the first light transmitting hole and are projected onto the transparent panel.

Description

Technical Field

[0001] The present invention relates to the field of electrical technology, and in particular to a key structure installed on a transparent panel. Background Art

[0002] As a commonly used electrical appliance, the button structure can be applied to a variety of scenarios. Some buttons will be installed on a transparent panel, providing the function of an indicator light while providing the button function. For example, a corresponding pattern (such as "+", "-") can be projected on the transparent panel to guide the user and more intuitively reflect the function of the button. However, the current button structure with an indicator light function usually directly sets the light source (such as an LED light board) between the touchpad of the button structure and the transparent panel. This setting method will not only increase the overall size of the button structure, but also increase the distance between the touchpad and the transparent panel. When the user touches the transparent panel, the touchpad may not be able to effectively sense the touch operation, resulting in insensitive touch.

[0003] In order to solve the above problems, some embodiments of this specification provide a key structure in which the distance between the PCB board with touch function and the transparent panel is smaller, which can improve touch sensitivity. On the other hand, the key structure also has a smaller overall size. Utility Model Content

[0004] Some embodiments of the present specification provide a key structure installed on a transparent panel, including: a PCB board with a touch function, the PCB board including a first surface and a second surface arranged opposite to each other, the first surface being connected to the transparent panel, the second surface being provided with at least one light source, and a first light-transmitting hole being provided on the PCB board; a key bracket, the key bracket being provided on the second surface, the key bracket including a reflective inclined surface, the reflective inclined surface being configured to reflect light from the at least one light source to form reflected light, and the reflected light passing through the first light-transmitting hole and projected onto the transparent panel.

[0005] In some embodiments, the PCB board and the button bracket are locked by using riveting studs and screws.

[0006] In some embodiments, the first surface is bonded to the transparent panel via a foam tape, a second light-transmitting hole is provided on the foam tape, and the first light-transmitting hole and the second light-transmitting hole are provided correspondingly.

[0007] In some embodiments, the light source includes an LED patch; and the transparent panel includes transparent glass.

[0008] In some embodiments, the slope of the reflective slope ranges from 15 degrees to 75 degrees.

[0009] In some embodiments, the button bracket further includes a reflective plane connected to a side of the reflective slope away from the PCB board, and the reflective plane is configured to reflect light from the at least one light source.

[0010] In some embodiments, the at least one light source is divided into at least one light source group, at least one isolation groove is provided on the key bracket, each light source group corresponds to one of the at least one isolation groove, and each isolation groove is provided with the reflective slope.

[0011] In some embodiments, the at least one isolation trench is filled with a filling material for diffusing the light.

[0012] In some embodiments, there are multiple at least one light source, and light propagation channels are provided between the multiple light sources.

[0013] In some examples, a light reflecting layer is disposed on a side surface of the first light-transmitting hole.

[0014] Some embodiments of the present specification provide a key structure installed on a transparent panel. The key structure includes a PCB board with a touch function. One side of the PCB board is connected to the transparent panel, and a light source and a key bracket are provided on the other side. The light source is reflected by the reflective inclined surface of the key bracket, and the reflected light is projected onto the transparent panel through a first light-transmitting hole opened on the PCB board to form a corresponding pattern. On the one hand, the distance between the PCB board and the transparent panel can be reduced, thereby improving touch sensitivity. On the other hand, the overall size of the key structure can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This specification will be further described in the form of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, like numbers represent like structures, wherein:

[0016] Figure 1 is an exploded schematic diagram of the installation of a key structure and a transparent panel according to some embodiments of this specification;

[0017] Figure 2 is a cross-sectional schematic diagram of the installation of a key structure and a transparent panel according to some embodiments of this specification;

[0018] Figure 3 is a schematic diagram of the principle of projecting a light source onto a transparent panel according to some embodiments of this specification;

[0019] Figure 4 is a partial perspective view of a key structure according to some embodiments of this specification;

[0020] Figure 5 is a partial schematic diagram of a key support according to some embodiments of this specification;

[0021] Figure 6 is a schematic structural diagram of the second surface of a PCB board according to some embodiments of this specification;

[0022] Figure 7 is a schematic structural diagram of the second surface of a PCB board according to other embodiments of this specification;

[0023] Figure 8 is a schematic diagram of the principle of projecting a light source onto a transparent panel according to other embodiments of this specification;

[0024] Figure 9 This is a schematic diagram of reflected light projected onto a transparent panel according to some embodiments of this specification.

[0025] Reference numerals: key structure 100; PCB board 11; first surface 111; second surface 112; light source 113; first light source group 1131; second light source group 1132, light source 1132-1 of the second light source group, light source 1132-2 of the second light source group; first light-transmitting hole 114; rectangular first light-transmitting hole group 1141; circular first light-transmitting hole group 1142; prefabricated hole 115; optical fiber transmission channel 116; light tube 1161, light pipe 1161-1, light pipe 1161-2; button bracket 12; reflective slope 121; fixing device 122; reflective plane 123; rivet stud 124; wire groove 125; bonding layer 13; second light-transmitting hole 131; rectangular second light-transmitting hole group 1311; circular second light-transmitting hole group 1312; isolation groove 14; first isolation groove 141; second isolation groove 142; isolation plate 143; transparent panel 200. DETAILED DESCRIPTION

[0026] To more clearly illustrate the technical solutions of this application, the following briefly describes the drawings used in the description of the embodiments. Obviously, the drawings described below are merely examples or embodiments of this specification. Those skilled in the art can apply this specification to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0027] As shown in this specification and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The term "based on" means "at least partially based on". The term "some embodiments" means "at least one embodiment"; the term "other embodiments" means "at least one other embodiment". The relevant definitions of other terms will be given in the following description.

[0028] Since the placement or use position of the products in this manual can be changed at will, the directional words such as "up", "down", "left", "right", "front", and "back" mentioned in this manual only indicate relative position relationships and are not used to limit absolute position relationships.

[0029] As a commonly used electrical appliance, the key structure can be applied to a variety of scenarios. Some keys are installed on a transparent panel, which can provide key functions and indicator lights at the same time. For example, the user can trigger the key function by touching the transparent panel, and the light source of the key structure can project corresponding patterns (such as "+", "-") on the transparent panel to guide the user and more intuitively reflect the function of the key. However, in some solutions, in order to install the key structure on the transparent panel so that the key structure has both touch function and indicator light function, the light source (such as a light-emitting diode (LED) light board) is usually directly set between the touch panel of the key structure and the transparent panel. When the thickness of the LED light board is large, the presence of the LED light board will make the distance between the touch panel and the transparent panel too large. When the user touches the transparent panel, the touch function module on the touch panel may not be able to accurately detect the user's touch action and generate a touch signal, resulting in insensitive touch.

[0030] To address the aforementioned issues, some embodiments of the present disclosure provide a key structure comprising a touch-enabled printed circuit board (PCB) and a key bracket. One side of the PCB is connected to a transparent panel, and the other side is provided with a light source and a key bracket. The key bracket includes a reflective bevel that reflects an optical fiber from the light source to form reflected light. The reflected light can then pass through a first light-transmitting hole on the PCB and project onto the transparent panel. Because one side of the PCB is connected to the transparent panel, and the light source (e.g., an LED light board) is not disposed between the PCB and the transparent panel, the distance between the PCB and the transparent panel can be reduced. When a user touches the transparent panel, the PCB can effectively detect the user's touch and generate a touch signal, thereby improving touch sensitivity.

[0031] Figure 1 is an exploded schematic diagram of the installation of a key structure and a transparent panel according to some embodiments of this specification; Figure 2 is a cross-sectional schematic diagram of the installation of a key structure and a transparent panel according to some embodiments of this specification; Figure 3 is a schematic diagram of the principle of projecting a light source onto a transparent panel according to some embodiments of this specification; Figure 4 is a partial perspective view of a key structure according to some embodiments of this specification; Figure 5 It is a partial schematic diagram of a key bracket according to some embodiments of this specification.

[0032] In some embodiments, combined Figure 1-Figure 5 As shown, the key structure 100 may include a touch-enabled PCB 11 and a key bracket 12. The PCB 11 includes a first surface 111 and a second surface 112 disposed opposite each other. The first surface 111 is connected to the transparent panel 200, and the second surface 112 is provided with at least one light source 113. A first light-transmitting hole 114 is defined in the PCB 11. The key bracket 12 is disposed on the second surface 112 of the PCB 11 and includes a reflective bevel 121 configured to reflect light from the at least one light source 113 to form reflected light. The reflected light then passes through the first light-transmitting hole 114 and is projected onto the transparent panel 200.

[0033] A touch-enabled PCB 11 includes a touch module, which enables the PCB 11 to function as a touch button. A user can trigger the corresponding function of the button structure 100 by touching the PCB 11. In some application scenarios, after the PCB 11 is mounted on the transparent panel 200, the user can touch the transparent panel 200. The touch module on the PCB 11 can detect the user's touch and generate a touch signal. In some embodiments, the touch module can include a capacitive touch module, an inductive touch module, a resistive touch module, a surface acoustic wave touch module, or an optical touch module.

[0034] The first surface 111 and the second surface 112 are opposite to each other. For example, the first surface 111 and the second surface 112 can be two parallel surfaces of the PCB board 11. In some embodiments, the first surface 111 and the second surface 112 can be perpendicular to the thickness direction of the PCB board 11. The thickness direction of the PCB board 11 can be Figure 1 It is indicated by the arrow X in the figure.

[0035] The key bracket 12 can be used to connect the PCB board 11 with other parts of the key structure 100. It should be noted that, in addition to the PCB board 11 and key bracket 12 described in this application, the key structure 100 can also include a mainboard (not shown in the figure). The mainboard can be connected to the PCB board 11 through the key bracket 12. The mainboard can obtain touch signals generated by the PCB board 11 (for example, the touch function module on the PCB board 11), and then perform corresponding operations based on the received touch signals, such as triggering the pressing and releasing of a key. In some embodiments, a fixing device 122 is provided on the key bracket 12, and the mainboard can be connected to the key bracket 12 via the fixing device 122.

[0036] The reflective slope 121 is a slope structure provided on the key bracket 12. The slope structure is inclined relative to the second surface 112 of the PCB board 11 so that the reflected light can be emitted toward the second surface 112 of the PCB board 11, and then emitted through the first light-transmitting hole 114 on the PCB board 11. For example, Figure 2 and Figure 3 In the illustrated embodiment, when the light from the light source 113 is emitted toward the reflective inclined surface 121 , the reflective inclined surface 121 may reflect at least a portion of the light toward the second surface 112 .

[0037] The reflective bevel 121 reflects light from the at least one light source 113 to form reflected light. This means that when light from the at least one light source 113 strikes the surface of the reflective bevel 121, the surface of the reflective bevel 121 is capable of reflecting at least a portion of the incident light. In some embodiments, the reflective bevel 121 may be a reflective layer disposed on the bevel structure of the key support 12. Exemplary reflective layers may include metal, glass, ceramic, etc. In some embodiments, the reflective bevel 121 may be obtained by applying a high-gloss surface treatment to the bevel structure of the key support 12.

[0038] In some embodiments, the slope of the reflective bevel 121 may be in the range of 15 degrees to 75 degrees. The slope of the reflective bevel 121 refers to the angle between the reflective bevel 121 and the second surface 112 of the PCB board 11. The angle between the reflective bevel 121 and the plane where the second surface 112 of the PCB board 11 is located can be Figure 3 In some embodiments, the slope of the reflective slope 121 may range from 15 degrees to 75 degrees. In some embodiments, the slope of the reflective slope 121 may range from 30 degrees.

[0039] In some embodiments, the slope of the reflective slope 121 has no limit on the distance between the PCB 11 and the surface of the key holder 12. Therefore, even if the distance between the PCB 11 and the surface of the key holder 12 is relatively close, the slope of the reflective slope 121 can be adjusted according to actual needs to meet the requirements of different application scenarios while minimizing the overall size of the key structure. The surface of the key holder 12 refers to the surface of the key holder 12 on the side closest to the PCB 11.

[0040] In some embodiments, the light source 113 may include an LED chip. Compared with LEDs in other packaging forms, chip-type LEDs are smaller in size and occupy less space, thereby further reducing the overall thickness of the key structure 100.

[0041] It should be noted that the at least one light source 113 can be divided into at least one light source group, and each light source group can include one or more light sources 113. For example, the light source 113 is an LED patch, and the multiple LED patches can include two LED patch groups, one of which includes three LED patches and the other includes four LED patches.

[0042] In some embodiments, multiple light sources 113 in the same light source group can be identical or approximately identical. Identical means that the color, frequency, wavelength, and other parameters of the light emitted by the LED patches are identical. Approximately identical means that the difference is within a preset range. For example, the ratio of the difference in the frequency of light emitted by two light sources 113 to the frequency of light emitted by one of the light sources 113 is less than 5%. In some embodiments, the light sources 113 in different light source groups can be identical or different. For example, the LED patches in the first LED patch group and the LED patches in the second LED patch group can emit the same light frequency.

[0043] The transparent panel 200 has a transparency greater than 10%, so that light projected on one side of the transparent panel 200 forms a corresponding pattern and is observed by a user on the other side of the transparent panel 200. In some embodiments, the transparent panel 200 may include a glass panel, an acrylic panel, or the like.

[0044] In some embodiments, the PCB board 11 and the key bracket 12 can be detachably connected, and exemplary detachable connection methods may include magnetic connection, snap connection, threaded connection, etc. In some embodiments, the PCB board 11 and the key bracket 12 can be fixedly connected, and exemplary fixed connection methods may include riveting connection, welding, bonding, screw and nut connection, etc. In some specific embodiments, the PCB board 11 and the key bracket 12 are locked by the riveting stud 124 and the screw, as an example only. Figure 1 As shown, the self-riveting stud 124 is riveted on the PCB board 11 and protrudes from the second surface 112 of the PCB board 11. The button bracket 12 is provided with a prefabricated hole 115. The aperture of the prefabricated hole 115 is larger than the outer diameter of the self-riveting stud 124. During installation, the self-riveting stud 124 is aligned with the prefabricated hole 115 and placed into the prefabricated hole 115. A screw (not shown in the figure) is locked to the self-riveting stud 124 on the side of the button bracket 12 away from the PCB board 11 to achieve a fixed connection between the PCB board 11 and the button bracket 12.

[0045] In some embodiments, the first surface 111 of the key structure 100 and the transparent panel 200 may be detachably connected. For example, the first surface 111 of the key structure 100 may be connected to the transparent panel 200 by magnetic attraction.

[0046] In other embodiments, the first surface 111 of the key structure 100 and the transparent panel 200 may be fixedly connected. For example, the first surface 111 of the key structure 100 may be attached to the transparent panel 200 by bonding. In some embodiments, the key structure 100 may further include a bonding layer 13, which is disposed on the first surface 111 of the PCB board 11. The first surface 111 of the PCB board 11 may be attached to the transparent panel 200 through the bonding layer 13. Exemplary types of the bonding layer 13 may include foam tape (VHB), a glue layer, etc. In some specific embodiments, such as Figure 1-Figure 2 As shown, the bonding layer 13 can be a foam tape.

[0047] In some embodiments, in order to allow the reflected light to be smoothly projected onto the transparent panel 200 to form a clear pattern, a second light-transmitting hole 131 may be provided on the bonding layer 13, and the second light-transmitting hole 131 may allow the reflected light to pass through. Figure 1-Figure 2 As shown, taking the bonding layer 13 as a foam tape as an example, the first surface 111 of the PCB board 11 can be bonded to the transparent panel 200 by the foam tape, and a second light-transmitting hole 131 is provided on the foam tape. The first light-transmitting hole 114 and the second light-transmitting hole 131 can form a channel for the reflected light to pass through, so that the reflected light can be irradiated onto the transparent panel 200.

[0048] In some embodiments, the first light-transmitting holes 114 and the second light-transmitting holes 131 can correspond one-to-one. For example, the PCB board 11 includes a plurality of first light-transmitting holes 114, and the bonding layer 13 includes a plurality of second light-transmitting holes 131. The plurality of first light-transmitting holes 114 and the plurality of second light-transmitting holes 131 are equal in number, and the positions of the first light-transmitting holes 114 and the second light-transmitting holes 131 correspond one-to-one. For example, for a first light-transmitting hole 114 and its corresponding second light-transmitting hole 131, the cross-section of the second light-transmitting hole 131 can overlap the cross-section of the first light-transmitting hole 114, so that after the reflected light passes through the first light-transmitting hole 114, it will not be blocked by the second light-transmitting hole 131 and can be smoothly projected onto the transparent panel 200.

[0049] In some embodiments, the size of the first light-transmitting hole 114 may be smaller than or equal to the size of the second light-transmitting hole 131. Figure 2 As shown, the first light-transmitting hole 114 and the corresponding second light-transmitting hole 131 are both circular, the inner diameter of the first light-transmitting hole 114 is smaller than the inner diameter of the circular second light-transmitting hole 131, and the central axis of the circular first light-transmitting hole 114 coincides with the central axis of the circular second light-transmitting hole 131. After such an arrangement, when the reflected light passes through the first light-transmitting hole 114, it will not be blocked by the second light-transmitting hole 131, thereby effectively improving the light propagation efficiency.

[0050] In some embodiments, one second light-transmitting hole 131 may correspond to multiple first light-transmitting holes 114. For example, for one second light-transmitting hole 131 and its corresponding multiple first light-transmitting holes 114, the cross-section of the second light-transmitting hole 131 may cover the cross-sections of the multiple first light-transmitting holes 114, so that after the reflected light passes through the multiple first light-transmitting holes 114, it will not be blocked by the second light-transmitting hole 131 and will be smoothly projected onto the transparent panel 200.

[0051] Figure 6 is a schematic structural diagram of the second surface of a PCB board according to some embodiments of this specification;

[0052] Figure 7 is a schematic structural diagram of the second surface of a PCB board according to other embodiments of this specification; Figure 8 This is a schematic diagram of the principle of projecting a light source onto a transparent panel according to other embodiments of this specification.

[0053] In some embodiments, when there are multiple first light-transmitting holes 114, the multiple first light-transmitting holes 114 can be divided into multiple first light-transmitting hole groups. For example, the first light-transmitting holes 114 can be grouped according to their cross-sectional shape (e.g., first light-transmitting holes 114 with a rectangular cross-sectional shape are grouped together, while first light-transmitting holes 114 with a circular cross-sectional shape are grouped together). For another example, the multiple first light-transmitting holes 114 can be grouped according to the pattern formed by the multiple first light-transmitting holes 114 (e.g., multiple first light-transmitting holes 114 forming a "heart-shaped" pattern are grouped together, while multiple first light-transmitting holes 114 forming a "flower-shaped" pattern are grouped together). For another example, the first light holes 114 may be grouped according to whether the distance between the central axes of the first light holes 114 is within a preset distance (for example, when the distance between the central axes of at least two first light holes 114 is within a preset distance, the at least two first light holes 114 are grouped together). For another example, the first light holes 114 may be grouped according to their corresponding key functions (for example, the pattern projected onto the transparent panel 200 by the light source 113 through multiple first light holes 114 (and possibly through the second light holes 131) is used to guide the user to turn on and off the key, respectively, then the one or more first light holes 114 for guiding the user to turn on the key are grouped together, and the one or more first light holes 114 for guiding the user to turn on the key are grouped together, and the one or more first light holes 114 for guiding the user to turn off the key are grouped together in another group). For another example, each first light hole 114 may be grouped separately. In some embodiments, when there are multiple second light holes 131, the multiple second light holes 131 may also be divided into multiple groups, and the grouping method of the second light holes 131 may be the same or similar to the grouping method of the first light holes 114, which will not be repeated here.

[0054] In some embodiments, a light source group may correspond to a first light transmission hole group and a second light transmission hole group. A light source group includes one or more light sources 113. The light emitted by a light source group is projected onto the transparent panel 200 through the first light transmission hole 114 in its corresponding first light transmission hole group and the second light transmission hole 131 in the second light transmission hole group.

[0055] Figure 9 Schematic diagram of reflected light projected onto a transparent panel according to some embodiments of this specification. In some embodiments, the shape of the first light-transmitting aperture 114 can include regular or irregular shapes such as circular, rectangular, triangular, and polygonal. In some embodiments, the shapes of the first light-transmitting aperture 114 and the second light-transmitting aperture 131 can be the same or different.

[0056] For example, combined with Figures 1-6 As shown, the first light-transmitting holes 114 may include a rectangular first light-transmitting hole group 1141 (including one rectangular first light-transmitting hole) and a circular first light-transmitting hole group 1142 (including five circular first light-transmitting holes). Correspondingly, the second light-transmitting holes 131 may also include a rectangular second light-transmitting hole group 1311 (including one rectangular second light-transmitting hole) corresponding to the rectangular first light-transmitting hole group 1141 and a circular second light-transmitting hole group 1312 (including five circular second light-transmitting holes) corresponding to the circular first light-transmitting hole group 1142. The number of the at least one light source 113 may be multiple, and the multiple light sources 113 may be divided into a first light source group 1131 (including one light source) and a second light source group 1132 (including five light sources). The rectangular first light-transmitting hole group 1141 and the rectangular second light-transmitting hole group 1311 correspond to the first light source group 1131. The light of the first light source group 1131 is reflected by the reflective bevel 121 and then projected onto the transparent panel 200 through the channel formed by the rectangular first light-transmitting hole group 1141 and the rectangular second light-transmitting hole group 1311, forming a rectangular pattern (such as Figure 9 The first circular light-transmitting hole group 1142 and the second circular light-transmitting hole group 1312 correspond to the second light source group 1132. The light from the second light source group 1132 is reflected by the reflective bevel 121 and then projected onto the transparent panel 200 through the channel formed by the first circular light-transmitting hole group 1142 and the second circular light-transmitting hole group 1312, forming a circular pattern (as shown). Figure 9 shown).

[0057] In some embodiments, the sidewalls of the first light-transmitting hole 114 are provided with a light-reflecting layer (not shown). The light-reflecting layer can reflect as much light as possible toward the sidewalls of the first light-transmitting hole 114, thereby promoting light reflection and further improving the efficiency of light transmission. For example, aluminum foil can be provided on the sidewalls of the first light-transmitting hole 114 as a light-reflecting layer. In some embodiments, to further improve light transmission efficiency, a light-reflecting layer can be provided on the sidewalls of the second light-transmitting hole 131.

[0058] In some embodiments, as Figure 2-Figure 3 As shown, the key bracket 12 may further include a reflective plane 123 connected to the reflective bevel 121 on the side away from the PCB board 11. The reflective plane 123 is configured to reflect light from the at least one light source 113. In this embodiment, a portion of the light emitted by the at least one light source 113 may be directed toward the reflective bevel 121, and a portion may be directed toward the reflective plane 123. By combining the reflective bevel 121 and the reflective plane 123 to reflect the light from the at least one light source 113, as much of the light emitted by the at least one light source 113 as possible is projected onto the transparent panel 200, effectively improving light transmission efficiency. In some embodiments, the reflective plane 123 may be a light-reflecting surface disposed on the side of the key bracket 12 closer to the PCB board 11. In some embodiments, the reflective bevel 121 may be a reflective layer disposed on the key bracket 12. In some embodiments, the reflective plane 123 may be obtained by applying a high-gloss surface treatment to the key bracket 12.

[0059] In some embodiments, as Figure 1 As shown, the button bracket 12 is also provided with a wire groove 125, which can be used to place cables (not shown in the figure) connecting the PCB board 11 and other components of the button structure 100 (such as the main board). By setting the wire groove 125, the layout of the cables can be optimized.

[0060] In some embodiments, the key structure 100 may further include an isolation component that can be used to isolate light directed toward different first light transmission hole groups or different first light transmission holes, thereby preventing crosstalk between light directed toward different first light transmission hole groups or different first light transmission holes. Exemplary isolation components may include isolation slots 14 or a combination of isolation slots 14 and isolation plates 143.

[0061] In some embodiments, the at least one light source 113 is divided into at least one light source group. The key bracket 12 is provided with at least one isolation groove 14. Each light source group corresponds to one of the at least one isolation groove 14. Each isolation groove 14 is provided with a reflective slope 121. When the PCB board 11 is mated with the key bracket 12, each light source group can be located within the corresponding isolation groove 14.

[0062] In some embodiments, the multiple light sources 113 can be divided into multiple light source groups, each light source group corresponding to a first light transmission hole group, a second light transmission hole group, and an isolation groove 14. A light source group can include one or more light sources 113, a first light transmission hole group can include one or more first light transmission holes 114, and a second light transmission hole group can include one or more second light transmission holes 131. For example, a light source group includes one light source 113, the corresponding first light transmission hole group includes one first light transmission hole 114, and the corresponding second light transmission hole group includes one second light transmission hole 131. For another example, a light source group includes multiple light sources 113, the corresponding first light transmission hole group includes multiple first light transmission holes 114, and the first light transmission holes 114 correspond one-to-one with the light sources 113, and the corresponding second light transmission hole group includes multiple second light transmission holes 131, and the second light transmission holes 131 correspond one-to-one with the light sources 113. One-to-one correspondence means that the number is the same and the position corresponds. For another example, the first light-transmitting hole group includes a first light-transmitting hole 114, the corresponding second light-transmitting hole group includes a second light-transmitting hole 131, a light source group includes multiple light sources 113, and the first light-transmitting hole group and the second light-transmitting hole group correspond to the multiple light sources 113 of the light source group.

[0063] As an example only, multiple light sources 113 can be divided into multiple light source groups, each light source group can include one or more light sources 113, when the button bracket 12 is matched with the PCB board 11, each light source group is located in an independent isolation groove 14, the isolation groove 14 can be closed and isolated for the light source group located therein, the light emitted by each light source group can be reflected by the reflective bevel 121 in the isolation groove 14 where the light source group is located, and projected onto the transparent panel 200 through the first light transparent hole 114 in the first light transparent hole group and the second light transparent hole 131 in the second light transparent hole group corresponding to the isolation groove 14, the light emitted by the light source group in an isolation groove 14 can only propagate in the isolation groove 14, and cannot propagate to other isolation grooves 14, thereby effectively avoiding the light emitted to different first light transparent hole groups or different first light transparent holes 114 from mutually crossing each other, affecting the projection effect.

[0064] In some embodiments, as Figures 1-6As shown, the isolation groove 14 can be a groove formed on the surface of the key bracket 12, with the reflective slope 121 disposed within the groove. When the key bracket 12 is mated with the PCB 11, the groove cover is disposed on the second surface 112 of the PCB 11, sealing and isolating the corresponding light source groups to prevent crosstalk between different light source groups. A first light-transmitting hole group is disposed on the PCB 11 at positions corresponding to the grooves, and a second light-transmitting hole group is disposed on the bonding layer 13 at positions corresponding to the grooves. The first light-transmitting hole 114 in the first light-transmitting hole group and the second light-transmitting hole 131 in the second light-transmitting hole group are used to allow reflected light to be projected onto the transparent panel 200. In some embodiments, a reflective plane 123 may also be disposed within the groove.

[0065] In some embodiments, the key support 12 is provided with a plurality of panels (not shown), and the isolation groove 14 can be a space enclosed by the plurality of panels and the surface of the key support 12. The shape of the isolation groove 14 can be the same as or different from the shape of the first light-transmitting hole 114. A first light-transmitting hole group is provided at a position of the PCB board 11 corresponding to the isolation groove 14, and a second light-transmitting hole group is provided at a position of the bonding layer 13 corresponding to the isolation groove 14. The first light-transmitting hole 114 in the first light-transmitting hole group and the second light-transmitting hole 131 in the second light-transmitting hole group are used for reflected light to be projected onto the transparent panel 200. When the key bracket 12 is matched with the PCB board 11, the end of the multiple enclosures away from the key bracket 12 abuts against the second surface 112 of the PCB board 11. Each light source group is located in an independent isolation groove 14. The reflected light can be projected onto the transparent panel 200 through the first light-transmitting hole 114 in the first light-transmitting hole group and the second light-transmitting hole 131 in the second light-transmitting hole group. The light emitted by the light source group is sealed and isolated by the enclosures that constitute the isolation groove 14 to avoid cross-talk between different light source groups.

[0066] As an example only, the plurality of light sources 113 can be divided into a first light source group 1131 and a second light source group 1132. The first light source group 1131 and the second light source group 1132 correspond to a rectangular first light transmission hole group 1141 and a circular first light transmission hole group 1142, respectively. Furthermore, the first light source group 1131 and the second light source group 1132 each correspond to a second light transmission hole group. The isolation trench 14 can include a first isolation trench 141 and a second isolation trench 142. A first light source group 1131, a first light transmission hole group (e.g., rectangular first light transmission hole group 1141), and a second light transmission hole group (e.g., rectangular second light transmission hole group 1311) corresponding to the first light source group 1131 are arranged corresponding to the first isolation groove 141. A second light source group 1132, a first light transmission hole group (circular first light transmission hole group 1142), and a second light transmission hole group (e.g., circular second light transmission hole group 1312) corresponding to the second light source group 1132 are arranged corresponding to the second isolation groove 142. When the key bracket 12 is mated with the PCB board 11, the first light source group 1131 is enclosed and isolated by the first isolation groove 141, and the second light source group 1132 is enclosed and isolated by the second isolation groove 142. Therefore, the first light source group 1131 and the second light source group 1132 do not interfere with each other.

[0067] In some embodiments, one or more isolation plates 143 are provided in the isolation groove 14, and the one or more isolation plates 143 divide the isolation groove 14 into multiple isolation cavities. One isolation cavity corresponds to a first light-transmitting hole 114 in a first light-transmitting hole group and a second light-transmitting hole 131 in a second light-transmitting hole group. The isolation plate 143 can prevent light from crossing through multiple first light-transmitting holes 114 in a first light-transmitting hole group.

[0068] As an example only, the first light-transmitting holes 114 may include a rectangular first light-transmitting hole group 1141 (including one rectangular first light-transmitting hole) and a circular first light-transmitting hole group 1142 (including five circular first light-transmitting holes), and the plurality of light sources 113 are divided into a first light-transmitting source group 1131 (including one light-transmitting source) and a second light-transmitting source group 1132 (including five light-transmitting sources). The rectangular first light-transmitting hole group 1141 corresponds to the first light-transmitting source group 1131. The circular first light-transmitting hole group 1142 corresponds to the second light-transmitting source group 1132. The circular first light-transmitting holes in the circular first light-transmitting hole group 1142 and the light sources in the second light-transmitting source group 1132 (for example) Figure 6The light sources 1132-1 of the second light source group 1142 and the light sources 1132-2 of the second light source group 1142 correspond one-to-one. The isolation groove 14 may include a first isolation groove 141 and a second isolation groove 142. The first light source group 1131 and the rectangular first light-transmitting hole group 1141 corresponding to the first light source group 1131 are arranged corresponding to the first isolation groove 141. The second light source group 1132 and the circular first light-transmitting hole group 1142 corresponding to the second light source group 1132 are arranged corresponding to the second isolation groove 142. A plurality of isolation plates 143 are provided in the second isolation groove 142. The plurality of isolation plates 143 divide the second isolation groove 142 into a plurality of isolation cavities, each isolation cavity corresponding to a circular first light-transmitting hole. When the PCB board 11 is mated with the key bracket 12, each light source in the second light source group 1132 and the corresponding circular first light-transmitting hole can be located in a different isolation cavity.

[0069] In this embodiment, when the PCB board 11 is mated with the key bracket 12, the first light source group 1131 is enclosed and isolated by the first isolation groove 141, and the second light source group 1132 is enclosed and isolated by the second isolation groove 142. Therefore, the first light source group 1131 and the second light source group 1132 do not interfere with each other, thus preventing crosstalk between the first light source group 1131 and the second light source group 1132. Furthermore, because the different light sources in the second light source group 1132 are located in different isolation cavities in the second isolation groove 142, the different light sources in the second light source group 1132 do not interfere with each other, thereby preventing light leakage and crosstalk between the different circular first light-transmitting holes.

[0070] In some embodiments, a filler is provided in the isolation groove 14 to diffuse light. Exemplary fillers may include inorganic transparent fillers (such as glass), organic transparent fillers (such as organic glass), liquids (such as water), and other light-transmitting materials. By providing a filler in the isolation groove 14 to diffuse the light emitted by the light source 113, the light projected onto the transparent panel 200 can be made softer, preventing glare from excessive brightness.

[0071] In some embodiments, combined Figure 1 、 Figure 5 、 Figure 7 and Figure 8As shown, at least one light source 113 is provided in multiple numbers, and light transmission channels 116 may be provided between the multiple light sources 113. If one or more of the light sources 113 malfunctions, the projection effect may be affected. By providing light transmission channels 116, a portion of the light from the other light sources 113 can be projected onto the transparent panel 200, thereby preventing the transparent panel 200 from being unable to properly display the pattern due to a light source 113 malfunction. Exemplary light transmission channels 116 may include non-transparent or low-transparency pipe components, where low transparency means a transparency of less than 20%, such as plastic pipes, glass pipes with a covering layer on the outer surface, acrylic pipes, etc.

[0072] By way of example only, the isolation groove 14 may include a first isolation groove 141 and a second isolation groove 142, and the plurality of light sources 113 may include a first light source group 1131 and a second light source group 1132. A light propagation channel 116 is disposed on the second surface 112 of the PCB board 11, and the second light source group 1132 is disposed within the light propagation channel 116. Light emitted by the light sources in the second light source group 1132 may propagate within the light propagation channel 116. Light pipes 1161 are disposed on the light propagation channel 116 at positions corresponding to each light source in the second light source group 1132 (for example, light pipe 1161-1 corresponds to light source 1132-1 in the second light source group, and light pipe 1161-2 corresponds to light source 1132-2 in the second light source group), respectively, for propagating light emitted by the second light source group 1132 out of the light propagation channel 116. The first light source group 1131 is disposed corresponding to the first isolation groove 141, and the second light source group 1132, the light propagation channel 116, and the light pipe 1161 are disposed corresponding to the second isolation groove 142. When the second light source group 1132 is functioning normally, light emitted by each light source in the second light source group 1132 is propagated into the second isolation groove 142 through the corresponding light pipe 1161 (for example, light emitted by light source 1132-1 in the second light source group is propagated into the second isolation groove 142 through the light pipe 1161-1, and light emitted by light source 1132-2 in the second light source group is propagated into the second isolation groove 142 through the light pipe 1161-2). After being reflected by the reflective inclined surface 121, light is projected onto the transparent panel 200 through the corresponding light-transmitting hole. When one of the light sources in the second light source group 1132 (such as the light source 1132-1 of the second light source group) fails, the light emitted by other light sources in the second light source group 1132 (such as the light source 1132-2 of the second light source group) can be transmitted to the light pipe 1161-1 through the light propagation channel 116, and projected onto the transparent panel 200 through the corresponding light-transmitting hole.

[0073] The key structure provided in some embodiments of the present specification may bring the following beneficial effects: (1) Since one side of the PCB board is connected to the transparent panel and no light source (such as an LED light board) is set between the PCB board and the transparent panel, the distance between the PCB board and the transparent panel can be reduced. When the user touches the transparent panel, the touch function module on the PCB board can accurately detect the user's touch action, thereby improving the touch sensitivity; (2) The touch function and the light source are integrated into one PCB board, and the light from the light source is reflected by the reflective bevel of the key bracket. The reflected light is projected onto the transparent panel through the first light-transmitting hole of the PCB board to form a corresponding pattern, which saves costs and can reduce the overall size of the key structure; (3) By setting the light source, the touch function and the light source are integrated into one PCB board, and the light from the light source is reflected by the reflective bevel of the key bracket. The reflected light is projected onto the transparent panel through the first light-transmitting hole of the PCB board to form a corresponding pattern, thereby saving costs and reducing the overall size of the key structure; (4) By setting the light source, the touch function and the light source are accurately detected. The linear propagation channel can concentrate the light of the light source group in a limited space for propagation, reduce the dispersion of light, improve the efficiency of light propagation, and at the same time, can project part of the light of other light sources onto the transparent panel, avoiding the problem that the transparent panel cannot display the pattern normally due to the failure of the light source; (4) setting an isolation groove or further setting an isolation plate in the isolation groove to form an isolation cavity can prevent cross-light leakage; (5) by setting fillers in the isolation groove or isolation cavity to diffuse the light emitted by the light source, the light projected onto the transparent panel can be made softer, avoiding the light being too bright and dazzling; (6) by setting a light reflection layer on the side wall of the first light-transmitting hole and / or the second light-transmitting hole, the light reflection layer can promote light reflection and further improve the efficiency of light propagation. It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects that may be produced may be any one or a combination of the above, or any other possible beneficial effects.

[0074] While the basic concepts have been described above, it will be apparent to those skilled in the art that the detailed disclosure is merely illustrative and does not limit this specification. Although not explicitly stated herein, various modifications, improvements, and revisions to this specification may be made by those skilled in the art. Such modifications, improvements, and revisions are suggested in this specification and remain within the spirit and scope of the exemplary embodiments of this specification.

Claims

1. A key structure installed on a transparent panel, characterized in that: include: A PCB with a touch function, the PCB comprising a first surface and a second surface disposed opposite to each other, the first surface being connected to the transparent panel, the second surface being provided with at least one light source, and a first light-transmitting hole being provided on the PCB; A key bracket is arranged on the second surface, and the key bracket includes a reflective inclined surface, which is configured to reflect the light of the at least one light source to form reflected light, and the reflected light passes through the first light-transmitting hole and is projected onto the transparent panel.

2. The key structure according to claim 1, characterized in that: The PCB board and the button bracket are locked together by means of riveting studs and screws.

3. The key structure according to claim 1, characterized in that: The first surface is bonded to the transparent panel via a foam tape, a second light-transmitting hole is provided on the foam tape, and the first light-transmitting hole and the second light-transmitting hole are correspondingly arranged.

4. The key structure according to claim 1, characterized in that: The light source includes an LED patch; the transparent panel includes transparent glass.

5. The key structure according to claim 1, characterized in that: The slope of the reflecting slope ranges from 15 degrees to 75 degrees.

6. The key structure according to claim 1, characterized in that: The key bracket further includes a reflective plane connected to a side of the reflective slope away from the PCB board, and the reflective plane is configured to reflect light from the at least one light source.

7. The key structure according to claim 1, characterized in that: The at least one light source is divided into at least one light source group. The key bracket is provided with at least one isolation groove. Each light source group corresponds to one of the at least one isolation groove. Each isolation groove is provided with the reflective slope.

8. The key structure according to claim 7, characterized in that: The at least one isolation groove is filled with a filling material for diffusing the light.

9. The key structure according to claim 1, characterized in that: There are multiple at least one light source, and light propagation channels are provided between the multiple light sources.

10. The key structure according to claim 1, characterized in that: A light reflecting layer is provided on the side surface of the first light-transmitting hole.

Images