Touch key structure

Abstract

The utility model relates to the technical field of key light display, and particularly discloses a touch key structure which comprises a touch sheet, a panel, a light guide plate and a switch box, the light guide plate is arranged below the panel, and the switch box is arranged below the light guide plate; the panel is provided with a plurality of through holes in rows, the top surface of the light guide plate is provided with a plurality of upper light guide parts corresponding to the through holes in rows, the touch sheets and the upper light guide parts are arranged in the through holes, and the light guide plate is provided with disconnection grooves between the adjacent upper light guide parts; a plurality of groups of light-emitting devices corresponding to the upper light guide parts are arranged in the switch box in rows, a plurality of holes corresponding to the upper light guide parts are formed in the top of the switch box in rows, and light rays emitted by the light-emitting devices can be emitted out of the holes and irradiate outwards through the upper light guide parts. According to the utility model, the problem of optical crosstalk of adjacent touch keys can be solved, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to key light display technical field especially a touch type key structure. BACKGROUND

[0002] The existing household appliance usually has a plurality of touch type keys arranged in rows on its panel to facilitate the user to control the household appliance. In order to enable the user to intuitively observe the state of the key, a light guide device is usually arranged on the key or around the key to indicate the state of the key by transmitting the light emitted by the lamp bead inside the switch box through the light guide device.

[0003] However, the existing key structures all rely on the same light guide device to guide light, and the keys are arranged in rows with small spacing between each other, which leads to the light leakage phenomenon and the user's misunderstanding, which undoubtedly reduces the user's experience. SUMMARY

[0004] The utility model provides a touch type key structure can solve the problem that adjacent touch key light leakage, improve the user's experience.

[0005] To solve the above problems, the utility model adopts the following technical scheme:

[0006] The embodiment of the utility model provides a touch type key structure, including touch sheet, panel, light guide plate and switch box, the light guide plate sets up below the panel, the switch box sets up below the light guide plate, the panel has a plurality of perforations arranged in rows, the top surface of the light guide plate has a plurality of upper light guide parts corresponding to the perforation arranged in rows, the touch sheet and upper light guide part all set up in the perforation, the light guide plate is provided with the break slot between adjacent upper light guide parts, the switch box has a plurality of light emitting devices corresponding to the upper light guide part arranged in rows in it, the top of the switch box has a plurality of holes corresponding to the upper light guide part arranged in rows, the light emitted by the light emitting device can be emitted from the hole and irradiate outward through the upper light guide part.

[0007] In some embodiments, the bottom surface of the light guide plate has a plurality of lower light guide parts corresponding to the upper light guide part arranged in rows, the lower light guide part passes through the hole and extends into the accommodating cavity, and the lower light guide part is located directly above the light emitting device.

[0008] In some embodiments, the bottom of the lower light guide part is provided with an inner recess corresponding to the light emitting device.

[0009] In some embodiments, the light guide plate, the upper light guide part and the lower light guide part are integrally formed.

[0010] In some embodiments, the top surface of the switch box is provided with a plurality of partition strips corresponding to the disconnecting grooves, and the partition strips are inserted into the disconnecting grooves.

[0011] In some embodiments, the switch box is provided with a plurality of accommodating cavities corresponding to the upper light guide portions, and each accommodating cavity is provided with a group of light emitting devices.

[0012] In some embodiments, the switch box is provided with a circuit board, and the switch box is provided with a plurality of partition plates, the circuit board is located below the partition plates, the light emitting devices are fixed on the top surface of the circuit board, and the accommodating cavities are formed between adjacent two partition plates.

[0013] In some embodiments, the accommodating cavities are provided with touch springs, the upper end of the touch spring abuts against the light guide plate, and the lower end of the touch spring abuts against the circuit board.

[0014] In some embodiments, the upper light guide portion is annular, and the touch sheet is embedded on the inner side of the upper light guide portion.

[0015] In some embodiments, the bottom surface of the light guide plate is provided with a buckle, the top surface of the switch box is provided with a buckle hole corresponding to the buckle, and the buckle is buckled in the buckle hole.

[0016] The utility model has at least the following beneficial effects: the utility model discloses a plurality of upper light guide portions corresponding to the perforations on the panel are arranged in rows on the top surface of the light guide plate, the touch sheet and the upper light guide portion are arranged in the perforation, and the light guide plate is provided with disconnecting grooves between adjacent upper light guide portions. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the touch type key structure of an embodiment of the utility model;

[0018] Figure 2 It is an exploded schematic view of the touch type key structure of an embodiment of the utility model;

[0019] Figure 3 It is a sectional view schematic view of the touch type key structure of an embodiment of the utility model;

[0020] Figure 4 It is a structural schematic view of the light guide plate of an embodiment of the utility model from the top;

[0021] Figure 5 It is a structural schematic view of the light guide plate of an embodiment of the utility model from the bottom.

[0022] Wherein, the reference signs are:

[0023] Touch sheet 100;

[0024] Panel 200, perforation 210;

[0025] Light guide plate 300, upper light guide part 310, disconnection groove 320, lower light guide part 330, inner recess 331, buckle 340;

[0026] Switch box 400, accommodating groove 410, partition strip 420, clamping hole 430;

[0027] Circuit board 500, light emitting device 510, touch spring 520. DETAILED DESCRIPTION

[0028] The utility model provides the following description of reference drawings to help overall understanding of various embodiments of the utility model as defined by the claims and its equivalents. The description includes various specific details to help understanding, but these details should be regarded as just exemplary. Therefore, those skilled in the art will realize that various changes and modifications can be made to various embodiments described herein without departing from the scope and spirit of the utility model.

[0029] In the description of the utility model, the orientation description such as the orientation or position relation indicated by up, down, front, back, left, right etc. is based on the orientation or position relation shown in the drawings, just for the convenience of describing the utility model and simplifying the description, and is not to indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the utility model.

[0030] It should be understood that when one element (for example, a first element) is "connected" with another element (for example, a second element), the element can be directly connected with another element, or there can be an intervening element (for example, a third element) between the element and another element.

[0031] The embodiment of the utility model provides a kind of touch type key structure, such as Figures 1-5As shown, it comprises a touch sheet 100, a panel 200, a light guide plate 300 and a switch box 400. The light guide plate 300 is arranged below the panel 200, and the switch box 400 is arranged below the light guide plate 300. The light guide plate 300 can guide light, and the switch box 400 is in the shape of a box. The panel 200 is provided with a plurality of perforations 210 in a row for mounting the touch sheet 100 and for light to be emitted. The top surface of the light guide plate 300 is provided with a plurality of upper light guide portions 310 corresponding to the perforations 210 in a row. Specifically, the positions and number of the upper light guide portions 310 correspond to the positions and number of the perforations 210 respectively. The touch sheet 100 and the upper light guide portions 310 are arranged in the perforations 210, and each perforation 210 has the touch sheet 100 and the upper light guide portion 310. A user can operate the touch sheet 100 to trigger the touch key corresponding to the touch sheet 100.

[0032] The light guide plate 300 is provided with a disconnection groove 320 between adjacent upper light guide portions 310. The disconnection groove 320 can greatly weaken or cut off the conduction of light along the light guide plate 300 to the adjacent upper light guide portions 310. The switch box 400 is provided with a plurality of groups of light emitting devices 510 corresponding to the upper light guide portions 310 in a row. Each group of light emitting devices can include one or more light emitting devices 510. The positions and number of the light emitting devices 510 correspond to the positions and number of the upper light guide portions 310 respectively. The top of the switch box 400 is provided with a plurality of apertures corresponding to the upper light guide portions 310 in a row. When the light emitting devices 510 work, the light emitted by the light emitting devices 510 can be emitted from the apertures, then be emitted to the light guide plate 300, and finally be irradiated outward through the upper light guide portions 310 to indicate that the touch key corresponding to the upper light guide portions 310 is triggered.

[0033] Due to the presence of the disconnection groove 320, light is difficult to pass through the light guide plate 300 to the adjacent upper light guide portions 310, and there is no problem of light leakage between adjacent touch keys. Therefore, the user will not misoperate the keys due to light leakage, thereby improving the user experience.

[0034] In some embodiments, the bottom surface of the light guide plate 300 is provided with a plurality of lower light guide portions 320 corresponding to the upper light guide portions 310 in a row. The lower light guide portions 320 pass through the apertures of the switch box 400 and extend into the accommodation cavity 410, and the lower light guide portions 320 are located directly above the light emitting devices 510.

[0035] The light emitted by the light emitting devices 510 is directly irradiated to the lower light guide portions 320 directly above, then passes through the light guide plate 300, and is emitted from the upper light guide portions 310. This can enhance the light guiding effect, and the light is not easy to be refracted to other positions, but is more emitted from the upper light guide portions 310, which can further prevent light leakage.

[0036] In the embodiment, the shape and size of the horizontal section of the lower light guide part 320 can be adapted to the shape and size of the horizontal section of the upper light guide part 310, and such arrangement can further improve the light guiding effect.

[0037] Further, the bottom of the lower light guide part 330 is provided with an inner groove 331 corresponding to the light emitting device 510, and the light emitted by the light emitting device 510 mainly passes through the inner wall of the inner groove 331 and enters the lower light guide part 330. Since the light emitted by the light emitting device 510 is approximately hemispherical, the inner groove 331 can be arranged to adapt to the light emitting characteristics of the light emitting device 510 to better guide the light to the upper light guide part 310.

[0038] Preferably, the inner groove 331 can be in the shape of a circular arc.

[0039] In the above embodiment, the light guide plate 300, the upper light guide part 310 and the lower light guide part 320 are integrally formed to facilitate overall manufacturing, and can be made of the same material to avoid refraction of light at the connection position and to strengthen the connection between them.

[0040] In some embodiments, the top surface of the switch box 400 is provided with a plurality of partition strips 420 corresponding to the disconnecting grooves 320 in a row, and the light cannot pass through the partition strips 420. The partition strips 420 can block the transmission of light. The partition strips 420 are inserted into the disconnecting grooves 320 corresponding thereto, which can further block the transmission of light from the light guide plate 300 to the adjacent upper light guide part 310, further preventing light from being transmitted. At the same time, the mutual adaptation of the partition strips 420 and the disconnecting grooves 320 can play a positioning role in the installation of the light guide plate 300, and the light guide plate 300 can be accurately installed on the switch box 400 at the correct position.

[0041] In some embodiments, the switch box 400 is provided with a plurality of accommodating cavities 410 corresponding to the upper light guide part 310 in a row, and each accommodating cavity 410 is provided with a group of light emitting devices 510. The light emitted by the light emitting devices 510 is covered in the accommodating cavities 410, and different groups of light emitting devices 510 do not interfere with each other, which can further prevent light from being transmitted to the adjacent upper light guide part 310, further preventing light from being transmitted.

[0042] Further, the switch box 400 is provided with a circuit board 500, and the switch box 400 is provided with a plurality of partitions in a row, and the circuit board 500 is located below the partitions. The light emitting devices 510 are fixed on the top surface of the circuit board 500, and the accommodating cavities 410 are formed between adjacent two partitions.

[0043] In the embodiment, all the light emitting devices 510 are fixed on the circuit board 500, which avoids the increase in wiring difficulty and cost caused by arranging a plurality of circuit boards, and the partitions can effectively isolate the light.

[0044] In some embodiments, a touch spring 520 is arranged in the accommodating cavity 410, and an upper end of the touch spring 520 abuts against the light guide plate 300, and the touch operation of the user on the touch sheet 100 is sensed by the touch spring 520 to determine whether the user has touched the corresponding touch sheet 100.

[0045] The lower end of the touch spring 520 can abut against the circuit board 500 of the above-described embodiments.

[0046] In some embodiments, the upper light guide part 310 is annular, and the touch sheet 100 is embedded in the inner side of the upper light guide part 310, so that the outer side of the touch sheet 100 can form a light circle to enhance the display effect. Meanwhile, the upper light guide part 310 can position the touch sheet 100 and limit the horizontal movement of the touch sheet 100, so that the touch sheet 100 is stably installed in the inner side of the upper light guide part 310.

[0047] In some embodiments, the bottom surface of the light guide plate 300 is provided with a buckle 340, the top surface of the switch box 400 is provided with a clamping hole 430 matched with the buckle 340, the buckle 340 is clamped in the clamping hole 430, the buckle connection has the characteristics of easy operation, and the light guide plate 300 can be quickly fixed on the top surface of the switch box 400, and the light guide plate 300 can be disassembled, which is convenient for maintenance.

[0048] The terms and words used in the above description and claims are not limited by the literal meaning, but are only used by the applicant to enable a clear and consistent understanding of the present application. Therefore, it should be clear to those skilled in the art that the above description of various embodiments of the present application is provided only for illustration, not for limitation, of the present application as defined by the appended claims and their equivalents.

Claims

1. A touch-sensitive button structure, characterized in that: The device includes a touch panel, a control panel, a light guide plate, and a switch box. The light guide plate is located below the control panel, and the switch box is located below the light guide plate. The control panel has multiple perforations arranged in a row. The top surface of the light guide plate has multiple upper light guide sections arranged in a row corresponding to the perforations. The touch panel and the upper light guide sections are both located within the perforations. The light guide plate has a break groove between adjacent upper light guide sections. The switch box has multiple sets of light-emitting devices arranged in a row corresponding to the upper light guide sections. The top of the switch box has multiple openings arranged in a row corresponding to the upper light guide sections. The light emitted by the light-emitting devices can exit through the openings and shine outwards through the upper light guide sections.

2. The touch-sensitive button structure according to claim 1, characterized in that: The bottom surface of the light guide plate has a row of lower light guides corresponding to the upper light guides. The lower light guides pass through the opening and extend into the receiving cavity, and the lower light guides are located directly above the light-emitting device.

3. The touch-sensitive button structure according to claim 2, characterized in that: The bottom of the lower light guide section is provided with an inner groove corresponding to the light-emitting device.

4. The touch-sensitive button structure according to claim 2, characterized in that: The light guide plate, upper light guide part and lower light guide part are integrally formed.

5. The touch-sensitive button structure according to claim 1, characterized in that: The top surface of the switch box is provided with a row of partition strips that are adapted to the disconnection slots, and the partition strips are inserted into the disconnection slots that are adapted to them.

6. The touch-sensitive button structure according to claim 1, characterized in that: The switch box has multiple accommodating cavities arranged in a row, corresponding to the upper light guide section, and each accommodating cavity is equipped with a set of light-emitting devices.

7. The touch-sensitive button structure according to claim 6, characterized in that: The switch box contains a circuit board, and multiple partitions are arranged in a row inside the switch box. The circuit board is located below the partitions, and the light-emitting device is fixed on the top surface of the circuit board. The accommodating cavity is formed between two adjacent partitions.

8. The touch-sensitive button structure according to claim 7, characterized in that: A touch spring is provided inside the accommodating cavity. The upper end of the touch spring abuts against the light guide plate, and the lower end abuts against the circuit board.

9. The touch-sensitive button structure according to any one of claims 1-8, characterized in that: The upper light guide is ring-shaped, and the touch pad is embedded inside the upper light guide.

10. The touch-sensitive button structure according to any one of claims 1-8, characterized in that: The bottom surface of the light guide plate is provided with a buckle, and the top surface of the switch box is provided with a buckle hole that matches the buckle, and the buckle is fastened into the buckle hole.

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