Novel key structure

Abstract

The utility model belongs to the technical field of key switch structures, and provides a novel key structure, which can reduce and improve the key lighting efficiency, and mainly comprises a key light-transmitting button, a key silicon rubber case, a reflective base and a printed circuit board, a light source device and a touch switch are arranged on the first surface of the printed circuit board; the first end face of the trumpet-shaped reflective base is fixed on the surface of the printed circuit board and sleeves the periphery of the light source device, so that light emitted by the light source device is emitted from the second end of the reflective base; a disc-shaped light-transmitting key silica gel sleeve covers the reflective base, so that light emitted from the second end of the reflective base can be emitted into the key silica gel sleeve and the key silica gel sleeve emits light; the key silica gel sleeve is further sleeved and covered with a light touch switch, the disc-shaped bottom face of the key silica gel sleeve extends inwards to form at least one blind hole column abutting against the light touch switch, and a key rod of the key light-transmitting button is installed in a mode of being matched with a blind hole of the blind hole column so that the key rod of the key light-transmitting button can trigger the corresponding light touch switch through the blind hole column when being squeezed.

Description

Technical Field

[0001] The utility model belongs to the technical field of key switch structures, and in particular relates to a novel key structure. Background Art

[0002] In electronic products, buttons are usually needed to switch between starting and shutting down the electronic products, switching between functional modes, switching between gear sizes, etc. In order to make the buttons clearly visible in dark environments or places with insufficient light, buttons with self-luminous functions have appeared.

[0003] In the prior art, a button with a self-luminous function usually has a patch LED added next to the button to illuminate the button, and the button is designed to be light-transmissive or hollow so that the light emitted by the patch LED can illuminate the button or show the outline of the button, thereby making the button clearly visible even in a dark environment or low-light environment.

[0004] However, the above-mentioned self-luminous function keys in the prior art do not plan and guide the light path emitted by the light source (chip light emitting diode), and part or most of the light from the light source does not play a role in illuminating the keys, but is wasted in illuminating the printed circuit board, the inside of the electronic product, etc., resulting in energy waste; and if the keys are to have a higher intensity of brightness illumination, more energy will be wasted. Utility Model Content

[0005] The utility model aims to provide a novel key structure, aiming to reduce the energy waste of keys with self-luminous function and improve the efficiency of illuminating keys.

[0006] This embodiment provides a new type of key structure, including: a key light-transmitting button, a key silicone cover, a reflective base, and a printed circuit board;

[0007] The first surface of the printed circuit board is provided with at least one light source device and at least one touch switch;

[0008] The first end surface of the reflective base in the shape of a through horn is fixed to the surface of the printed circuit board and can be sleeved around the light source device, so that part or all of the light emitted by the light source device is emitted from the second end of the reflective base;

[0009] The disk-shaped light-transmissive key silicone sleeve is set to cover the reflective base, so that the light emitted from the second end of the reflective base can enter the key silicone sleeve and make it emit light;

[0010] The key silicone cover is also sleeved to cover the touch switch, and at least one blind hole column abutting against the touch switch is extended inward from the disc-shaped bottom surface of the key silicone cover, and the key rod of the key transparent button is adapted to be installed in the blind hole of the blind hole column, so that the key rod of the key transparent button can trigger the corresponding touch switch through the blind hole column when being squeezed.

[0011] Optionally, the key rod of the key light-transmitting button is located on the bottom surface, the bottom surface is in contact with the key silicone sleeve, and a diffuse reflection area is provided on the bottom surface of the key light-transmitting button.

[0012] Optionally, the bottom surface of the key-transmitting button is provided with one or more foolproof mounting holes or foolproof mounting columns;

[0013] One or more foolproof mounting posts or foolproof mounting holes are provided on the front side of the key silicone cover so that the key function corresponding to the key rod of the key transparent button corresponds to the function of the corresponding touch switch triggered by the blind hole post of the key silicone cover.

[0014] Optionally, it also includes: a button function prompt sheet;

[0015] The back of the button function prompt sheet is provided with one or more foolproof limit grooves or foolproof limit bone positions;

[0016] The front side of the key translucent button is provided with one or more anti-foolproof limit positions or anti-foolproof limit grooves, so that the key function prompt sheet can be installed on the key translucent button at a unique adaptation angle, so that the function prompt on the key function prompt sheet corresponds to the function of the corresponding touch switch triggered by the key rod of the key translucent button when being squeezed.

[0017] Optionally, the key function prompt sheet is an aluminum sheet, and the back side of the key function prompt sheet is adhered to the front side of the key light-transmitting button by bonding.

[0018] Optionally, it also includes: a button cover;

[0019] The key function prompt sheet, the key light-transmitting button, and the key silicone cover constitute a first key structure;

[0020] The reflective base and the printed circuit board form a second key structure;

[0021] The key cover is provided with a first through hole adapted to the first key structure. After the first key structure and the second key structure are adapted and fixedly installed, the key cover can be adapted and fixedly installed on the first surface of the printed circuit board so that the key function prompt sheet is exposed from the first through hole.

[0022] Optionally, the button silicone sleeve is fixed to the first surface of the printed circuit board through an anti-foolproof mounting structure.

[0023] Optionally, the fool-proof mounting structure is an asymmetric fastener mounting fixing structure.

[0024] Optionally, the inner surface of the reflective base in the shape of a through horn is provided with a mirror reflective coating.

[0025] Optionally, the inner surface of the reflective base in the shape of a through horn has a reflective structure;

[0026] The reflective structure is one or more of a triangle, a rhombus, a trapezoid, a pentagon, and a hexagon.

[0027] It can be seen from the above technical solutions that this embodiment has the following advantages:

[0028] The novel key structure of the present embodiment includes: a key translucent button, a key silicone sleeve, a reflective base, and a printed circuit board; wherein the first surface of the printed circuit board is provided with at least one light source device and at least one touch switch; the first end surface of the reflective base in the shape of a through trumpet is fixed to the surface of the printed circuit board and can be sleeved around the light source device, so that part or all of the light emitted by the light source device is emitted from the second end of the reflective base; the disc-shaped translucent key silicone sleeve is sleeved to cover the reflective base, so that the light emitted from the second end of the reflective base can enter the key silicone sleeve and make it emit light; the key silicone sleeve is also sleeved to cover the touch switch, and at least one blind hole column abutting the touch switch is extended inwardly from the disc-shaped bottom surface of the key silicone sleeve, and the key rod of the key translucent button is adapted to the blind hole of the blind hole column for installation, so that the key rod of the key translucent button triggers the corresponding touch switch through the blind hole column when being squeezed. It can be seen that the above-mentioned new type of key structure is provided with a reflective base for guiding the light emitted by the light source device, and the light emitted by the light source device is guided into the key silicone cover to form a backlight of the key translucent button that realizes the key function. Since most or all of the light emitted by the light source device is guided to the key silicone cover by the reflective base, it all serves to illuminate the key, thereby reducing the energy waste of the key with self-luminous function, improving the efficiency of illuminating the key, and being more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is an exploded view of an embodiment of the novel key structure of the present application;

[0030] Figure 2 It is a schematic diagram of an embodiment of a key light-transmitting button, a key silicone cover and a reflective base in the new key structure of the present application;

[0031] Figure 3 This is a schematic diagram of an embodiment of a novel key structure of the present application;

[0032] Figure 4 It is a schematic diagram of another embodiment of the novel key structure of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] See also Figures 1 to 4 This embodiment discloses a novel key structure, including: a key light-transmitting button 100, a key silicone cover 200, a reflective base 300, and a printed circuit board 400; the first surface (such as Figure 1 The side shown in FIG. 1 is provided with at least one light source device 410 (eg Figure 1 The patch light source in the embodiment) and at least one touch switch 420 (e.g. Figure 1 The first end face of the reflective base 300 in the shape of a through horn is fixed to the surface of the printed circuit board 400 and can be sleeved around the light source device 410, so that part or all of the light emitted by the light source device 410 is emitted from the second end of the reflective base 300; the disc-shaped transparent key silicone cover 200 is sleeved to cover the reflective base 300, so that the light emitted from the second end of the reflective base 300 can enter the key silicone cover 200 and make it emit light; the key silicone cover 200 is also sleeved to cover the light touch switch 420 on the printed circuit board 400 (such as Figure 1 4 tact switches are shown); please refer to Figure 2 , the disc-shaped bottom surface of the key silicone cover 200 extends inwardly with at least one blind hole column 210 that abuts against the light touch switch 420, and the key rod 110 of the key transparent button 100 is installed in the blind hole 211 of the blind hole column 210, so that the key rod 110 of the key transparent button 100 triggers the corresponding light touch switch 420 through the blind hole column 210 when squeezed, thereby realizing the key function. It can be seen that the above-mentioned new key structure is provided with a reflective base 300 for guiding the light emitted by the light source device 410, and the light emitted by the light source device 410 is guided into the key silicone cover 200 to form the backlight of the key transparent button 100 that realizes the key function. Since most or all of the light emitted by the light source device 410 is guided to the key silicone cover 200 by the reflective base, it is used to illuminate the key transparent button 100, thereby reducing the energy waste of the key with self-luminous function, improving the efficiency of illuminating the key, and being more environmentally friendly. Under the general requirement of energy conservation and environmental protection, the cost requirements for product design will become higher and higher, especially for outdoor products with batteries. The use of energy-saving and environmentally friendly buttons in the above embodiment can extend the use time and be more competitive in the market.

[0035] Specifically, Figure 2 As shown, in the novel key structure of the present embodiment, the key rod 110 of the key light-transmitting button 100 is located on the bottom surface of the key light-transmitting button 100, the bottom surface of the key light-transmitting button 100 contacts the key silicone sleeve 200, and the bottom surface of the key light-transmitting button 100 is provided with a diffuse reflection area 120. By frosting the bottom surface of the key light-transmitting button 100, the reflected light is diffusely reflected, so that the light is inside the key light-transmitting button 100, thereby better meeting the demand for the light-transmitting effect of the key light-transmitting button 100. Under the condition of ensuring the same lighting effect, it can save about 10% of energy compared to simply lighting, which plays a role in saving electricity, especially in electronic products with batteries, reducing the loss of electric energy, extending the use time of the product, and improving the user experience.

[0036] Specifically, in the novel key structure of the present embodiment, the bottom surface of the key light-transmitting button 100 is provided with one or more foolproof mounting holes or foolproof mounting columns, for example Figure 2 The front side of the key silicone cover 200 is provided with one or more foolproof mounting columns or foolproof mounting holes, for example Figure 1 The foolproof mounting hole 221 is shown so that the key function corresponding to the key rod of the key transparent button corresponds to the function of the corresponding touch switch triggered by the blind hole column of the key silicone cover. It should be noted that the length of the foolproof blind hole column 220 formed by the foolproof mounting hole 221 in the key silicone cover 200 is shorter than the blind hole column 210 to prevent affecting the assembly.

[0037] Specifically, the new key structure in this embodiment further includes: a key function prompt sheet 500; the back of the key function prompt sheet 500 is provided with one or more foolproof limit grooves or foolproof limit bone positions, for example Figure 2 The two foolproof limit grooves 510 are arranged at right angles to each other, which can prevent the surface from sliding in the right direction during assembly. The front side of the key light-transmitting button 100 is provided with one or more foolproof limit bone positions or foolproof limit grooves, such as Figure 1 The two foolproof limit bone positions 140 are arranged at right angles to each other, and when assembled, they cooperate with the two foolproof limit grooves arranged at right angles to each other to prevent sliding on the surface in the right direction, so that the key function prompt sheet 500 can be installed on the key transparent button 100 at a unique adaptation angle, so that the function prompt on the key function prompt sheet 500 (for example Figure 1 The switch button, increase + button, decrease - button and pause play button shown in the figure correspond to the function of triggering the corresponding touch switch 420 when the button rod 110 of the key transparent button 100 is squeezed.

[0038] Specifically, the key function prompt sheet 500 in the novel key structure of the present embodiment is an aluminum sheet, and the back side of the key function prompt sheet 500 is attached to the front side of the key transparent button 100 by bonding. For example, the back side of the key function prompt sheet 500 and the front side of the key transparent button 100 are bonded together through shape-matching 3M glue 600 with anti-foolproof limit grooves and anti-foolproof limit bone positions.

[0039] Specifically, the new key structure in this embodiment also includes: a key cover 700; the key function prompt sheet 500, the key transparent button 100, and the key silicone cover 200 in the above embodiment can form a first key structure for preliminary assembly; and the reflective base 300 and the printed circuit board 400 can form a second key structure for preliminary assembly, for example, the reflective base 300 and the printed circuit board 400 are fixed by screws 810; the key cover 700 is provided with a first through hole 710 adapted to the first key structure (specifically adapted to the contour of the key transparent button 100 in the first key structure), after the first key structure and the second key structure are adapted and fixedly installed, the key cover 700 can be adapted and fixedly installed on the first side of the printed circuit board 400, so that the key function prompt sheet 500 is exposed from the first through hole 710 to facilitate users to press the function keys.

[0040] Specifically, in the present embodiment, the key silicone cover 221 of the new key structure is fixed to the first surface of the printed circuit board 400 through the foolproof mounting structure. Further, the foolproof mounting structure adapted between the key silicone cover 221 and the printed circuit board 400 is an asymmetric fastener mounting fixing structure, such as Figure 3 As shown, the hole position for installing the fastener (such as a screw) requires the key silicone sleeve 221 and the printed circuit board to be adapted to a specified lower level in order to be fully installed in place, otherwise the installation holes cannot be fully aligned, thereby playing a fool-proof role.

[0041] Specifically, if the reflective base 300 is made of conventional EVA to block light, most of the light inside the reflective base 300 will be absorbed by the reflective base 300 itself, and only a small part of the light will be diffusely reflected to the area at the bottom of the key transparent button 100 that needs to be transparent. However, the reflective base 300 is made of PC material, and the inner surface of the reflective base 300 in the shape of a through horn in the new key structure of this embodiment is provided with a mirror reflective coating, so that it can achieve a reflective effect similar to a mirror, so that almost all the light in the area is reflected to the bottom of the key transparent button 100, and then the surface of the key transparent button 100 is frosted to make the reflected light diffusely reflected, so that the light is inside the key transparent button 100, thereby better meeting the product's demand for the transparent effect of the transparent button; further, the inner surface of the reflective base 300 in the shape of a through horn has a reflective structure 310; the reflective structure 310 is one or more of a triangle, a rhombus, a trapezoid, a pentagon, and a hexagon.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of key structure, characterized in that: include: Translucent button, silicone cover, reflective base, printed circuit board; The first surface of the printed circuit board is provided with at least one light source device and at least one touch switch; The first end surface of the reflective base in the shape of a through horn is fixed to the surface of the printed circuit board and can be sleeved around the light source device, so that part or all of the light emitted by the light source device is emitted from the second end of the reflective base; The disk-shaped light-transmissive key silicone sleeve is arranged to cover the reflective base, so that the light emitted from the second end of the reflective base can enter the key silicone sleeve and make it emit light; The key silicone cover is also sleeved to cover the touch switch, and at least one blind hole column abutting against the touch switch is extended inward from the disc-shaped bottom surface of the key silicone cover, and the key rod of the key transparent button is adapted to be installed in the blind hole of the blind hole column, so that the key rod of the key transparent button can trigger the corresponding touch switch through the blind hole column when being squeezed.

2. According to the novel key structure of claim 1, it is characterized in that: The key rod of the key light-transmitting button is located on the bottom surface, the bottom surface is in contact with the key silicone sleeve, and a diffuse reflection area is provided on the bottom surface of the key light-transmitting button.

3. The novel key structure according to claim 2 is characterized in that: The bottom surface of the key-press light-transmitting button is provided with one or more foolproof mounting holes or foolproof mounting columns; One or more foolproof mounting posts or foolproof mounting holes are provided on the front side of the key silicone cover so that the key function corresponding to the key rod of the key transparent button corresponds to the function of the corresponding touch switch triggered by the blind hole post of the key silicone cover.

4. The novel key structure according to claim 1 is characterized in that: Also includes: Button function reminder sheet; The back of the button function prompt sheet is provided with one or more foolproof limit grooves or foolproof limit bone positions; The front side of the key translucent button is provided with one or more anti-foolproof limit positions or anti-foolproof limit grooves, so that the key function prompt sheet can be installed on the key translucent button at a unique adaptation angle, so that the function prompt on the key function prompt sheet corresponds to the function of the corresponding touch switch triggered by the key rod of the key translucent button when being squeezed.

5. The novel key structure according to claim 4 is characterized in that: The key function prompt sheet is an aluminum sheet, and the back side of the key function prompt sheet is attached to the front side of the key light-transmitting button by bonding.

6. The novel key structure according to claim 5 is characterized in that: Also includes: Button cover; The key function prompt sheet, the key light-transmitting button, and the key silicone cover constitute a first key structure; The reflective base and the printed circuit board form a second key structure; The key cover is provided with a first through hole adapted to the first key structure. After the first key structure and the second key structure are adapted and fixedly installed, the key cover can be adapted and fixedly installed on the first surface of the printed circuit board so that the key function prompt sheet is exposed from the first through hole.

7. The novel key structure according to claim 1 is characterized in that: The key silicone sleeve is fixed to the first surface of the printed circuit board through a fool-proof mounting structure.

8. The novel key structure according to claim 7 is characterized in that: The foolproof installation structure is an asymmetric fastener installation fixing structure.

9. The novel key structure according to claim 1 is characterized in that: The inner surface of the reflective base in the shape of a through horn is provided with a mirror reflective coating.

10. The novel key structure according to claim 1 is characterized in that: The inner surface of the reflective base in the shape of a through horn has a reflective structure; The reflective structure is one or more of a triangle, a rhombus, a trapezoid, a pentagon, and a hexagon.

Images