Novel moisture-proof and dust-proof light guide plate key

Abstract

The utility model is suitable for the technical field of man-machine interaction liquid crystal display light guide plates, and provides a novel moisture-proof and dust-proof light guide plate key. A light guide plate housing; the key holes are formed in the surface of the light guide plate shell in an array manner; the keys are arranged in the key holes; the mold silica gel is arranged on the side face of the key in an injection molding mode and located between the key hole and the key. Compared with the prior art, the light guide plate has the beneficial effects that the key is made of a hard transparent material, and then the flexible silica gel is injected on the surface of the key by an injection molding worker, so that the key and the key are fused into a whole, the pressing hand feeling of the key of the original light guide plate is reserved, and the key is in flexible contact with the light guide plate shell; therefore, water vapor and dust are prevented from entering the light guide plate, and huge hidden dangers are prevented from being brought to normal use of the light guide plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of light guide plates for human-computer interaction liquid crystal displays, and particularly relates to a novel light guide plate button with moisture-proof and dust-proof functions. Background Art

[0002] At present, the used light guide plate buttons are mainly made of a single material such as ABS or acrylic and other transparent materials, and then are manufactured through processes such as painting and laser engraving. When such buttons are installed into the hole grooves in the aluminum alloy front shell of the light guide plate, "hard-to-hard" contact will be formed between the upper surface of the button and the lower surface of the aluminum alloy front shell, resulting in tiny gaps between the button and the aluminum alloy front shell. Subsequently, when used under complex conditions, moisture and dust will enter the light guide plate through the gaps. Among them, moisture will damage the electrical devices inside the light guide plate, and dust will cause the button to jam and fail, thus bringing great potential hazards to the normal use of the light guide plate.

[0003] Therefore, how to provide a novel light guide plate button with moisture-proof and dust-proof functions is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a novel light guide plate button with moisture-proof and dust-proof functions, aiming to solve the problems mentioned in the background art.

[0005] The utility model is realized as follows. A novel light guide plate button with moisture-proof and dust-proof functions includes:

[0006] A light guide plate housing;

[0007] Key holes, which are arranged in an array on the surface of the light guide plate housing;

[0008] Buttons, which are placed inside the key holes;

[0009] Mold silicone, which is injection-molded on the side of the button and is located between the key hole and the button.

[0010] Preferably, a groove is opened at the rear end of the light guide plate housing, and a PCBA rigid circuit board is embedded inside the groove. The contacts on the surface of the PCBA rigid circuit board are arranged corresponding to the buttons.

[0011] Preferably, second positioning holes are symmetrically arranged in an array on the left and right sides of the light guide plate housing, and first positioning holes are symmetrically arranged in an array on the left and right sides of the PCBA rigid circuit board and are aligned with the second positioning holes.

[0012] Preferably, both the key holes and the buttons are arranged in a stepped shape, and the thickness value of the mold silicone is equal to the gap value between the key holes and the buttons.

[0013] Preferably, the cross-sectional size of the PCBA rigid circuit board is the same as that of the groove, and the thickness value of the PCBA rigid circuit board is equal to the thickness value of the groove.

[0014] Preferably, the light guide plate housing is an aluminum alloy front shell, the keys are provided in multiple models, and multiple types of silicone molds are correspondingly provided.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: by making the keys of a relatively hard transparent material and then injecting flexible silicone on the surface of the keys by injection molding, the two are fused into one body, so that both the pressing feel of the original light guide plate keys is retained, and a flexible contact is formed between the keys and the light guide plate housing, thereby preventing water vapor and dust from entering the light guide plate and avoiding a situation that brings great potential hazards to the normal use of the light guide plate.

[0016] By combining the light guide plate housing and the PCBA rigid circuit board, the two are formed into a whole, which can replace the traditional bottom plate, making it have both the support strength of the traditional bottom plate and play a role in light guiding, thereby further reducing the thickness of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic diagram of the overall appearance structure of a novel light guide plate key for waterproofing and dustproofing provided by an embodiment of the present utility model;

[0019] Figure 2 is a schematic diagram of the exploded front view structure of a novel light guide plate key for waterproofing and dustproofing provided by an embodiment of the present utility model;

[0020] Figure 3 is a schematic diagram of the exploded rear view structure of a novel light guide plate key for waterproofing and dustproofing provided by an embodiment of the present utility model;

[0021] Figure 4 is a schematic diagram of the key structure of a novel light guide plate key for waterproofing and dustproofing provided by an embodiment of the present utility model;

[0022] Figure 5 is a schematic diagram of the exploded key structure of a novel light guide plate key for waterproofing and dustproofing provided by an embodiment of the present utility model.

[0023] In the figure: 1 - light guide plate housing, 2 - key hole, 3 - key, 4 - mold silicone, 5 - groove, 6 - PCBA rigid circuit board, 7 - first positioning hole, 8 - second positioning hole. Detailed implementation mode

[0024] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] The following describes in detail the specific implementation of the present utility model with reference to specific embodiments.

[0026] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a structural schematic diagram of a new type of light guide plate button for waterproofing and dustproofing provided by an embodiment of the present utility model includes;

[0027] Light guide plate housing 1;

[0028] Key holes 2, which are arranged in an array on the surface of the light guide plate housing 1;

[0029] Button 3, which is placed inside the key hole 2;

[0030] Mold silicone 4, which is injection molded on the side of the button 3 and is located between the key hole 2 and the button 3.

[0031] In the embodiment of the present utility model, when in use, a layer of mold silicone 4 is injection molded on the surface of the button 3, and then the button 3 with the mold silicone 4 is placed from back to front in the key hole 2 on the surface of the light guide plate housing 1 and placed correspondingly according to the shape and function instructions. Note: The button 3 is a transparent material button, and the mold silicone 4 is a flexible silicone;

[0032] By making the button 3 of a relatively hard transparent material and then injection molding the flexible silicone on the surface of the button 3, the two are integrated into one body, so that both the pressing feel of the original light guide plate button is retained, and a flexible contact is formed between the button 3 and the light guide plate housing 1, thereby preventing water vapor and dust from entering the light guide plate and bringing great potential hazards to the normal use of the light guide plate.

[0033] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , as a preferred embodiment of the present utility model, a groove 5 is provided at the rear end of the light guide plate housing 1, and a PCBA rigid circuit board 6 is embedded inside the groove 5, and the contacts on the surface of the PCBA rigid circuit board 6 are arranged corresponding to the button 3.

[0034] In the embodiment of the present utility model, when in use, the rigid circuit board 6 is placed in the groove 5 opened at the rear end of the light guide plate housing 1, and the contacts on its surface are arranged corresponding to the keys 3;

[0035] By combining the light guide plate housing 1 and the PCBA rigid circuit board 6, the two are made to form an integral whole, and thus can replace the traditional bottom plate, making it have both the support strength of the traditional bottom plate and play a role in guiding light, thereby further reducing the thickness of the display screen.

[0036] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, as a preferred embodiment of the present utility model, the second positioning holes 8 are symmetrically arrayed on the left and right of the light guide plate housing 1, the first positioning holes 7 are symmetrically arrayed on the left and right of the PCBA rigid circuit board 6, and are arranged in alignment with the second positioning holes 8.

[0037] In the embodiment of the present utility model, when in use, by symmetrically arraying the second positioning holes 8 on the left and right of the light guide plate housing 1, and symmetrically arraying the first positioning holes 7 on the left and right of the PCBA rigid circuit board 6 and arranging them in alignment with the second positioning holes 8, it is convenient to install the two on the main body of the human-computer interaction liquid crystal display.

[0038] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, as a preferred embodiment of the present utility model, both the keyholes 2 and the keys 3 are arranged in a stepped shape, and the thickness value of the mold silicone 4 is equal to the clearance value between the keyholes 2 and the keys 3.

[0039] In the embodiment of the present utility model, when in use, by arranging both the keyholes 2 and the keys 3 in a stepped shape, the keys 3 are not easily dropped out, and by making the thickness value of the mold silicone 4 equal to the clearance value between the keyholes 2 and the keys 3, the gap between the keyholes 2 and the keys 3 can be sealed to prevent the entry of dust and other debris.

[0040] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, as a preferred embodiment of the present utility model, the cross-sectional size of the PCBA rigid circuit board 6 is the same as the cross-sectional size of the groove 5, and the thickness value of the PCBA rigid circuit board 6 is equal to the thickness value of the groove 5.

[0041] In the embodiment of the utility model, when in use, by making the cross-sectional size of the PCBA rigid circuit board 6 the same as the cross-sectional size of the groove 5, and the thickness value of the PCBA rigid circuit board 6 equal to the thickness value of the groove 5, the PCBA rigid circuit board 6 and the light guide plate housing 1 can form a whole, which is not easy to fall off and is convenient for replacing the traditional base plate.

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, as a preferred embodiment of the present invention, the light guide plate housing 1 is an aluminum alloy front housing, the buttons 3 are provided with various models, and correspondingly, various types of silicone molds are provided.

[0043] In the embodiment of the utility model, when in use, the light guide plate housing 1 is made into an aluminum alloy front shell so as to have good heat dissipation performance, thereby dissipating the heat generated by the PCBA rigid circuit board 6, and the buttons 3 are provided with multiple models and correspondingly provided with multiple types of silicone molds, so that the buttons 3 of different models are placed in the silicone mold accordingly, thereby facilitating the injection molding of the silicone mold 4.

[0044] The above embodiment of the utility model provides a novel light guide plate key that is waterproof, dustproof, and during assembly, a layer of mold silicone 4 is molded on the surface of the key 3 using a mold, and then the key 3 with the mold silicone 4 is placed from back to front on the key hole 2 on the surface of the light guide plate housing 1, and is placed accordingly according to the shape and function instructions;

[0045] Then, the PCBA rigid circuit board 6 is embedded in the groove 5 on the rear side of the light guide plate housing 1, so that the contacts on its surface are aligned with the keys 3, and the second positioning holes 8 on both sides of the PCBA rigid circuit board 6 are aligned with the first positioning holes 7, and then the light guide plate housing 1 is connected and fixed to the human-computer interaction LCD display body.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel light guide plate key that is resistant to water vapor and dust, characterized in that: include; Light guide plate housing (1); Key holes (2), wherein an array of the key holes (2) is provided on the surface of the light guide plate housing (1); A key (3), wherein the key (3) is placed inside the key hole (2); The mold silica gel (4) is injection molded on the side of the key (3) and is between the key hole (2) and the key (3).

2. A novel light guide plate keypad that is water vapor and dust proof according to claim 1, characterized in that: A groove (5) is provided at the rear end of the light guide plate housing (1), a PCBA rigid circuit board (6) is embedded in the interior of the groove (5), and contacts on the surface of the PCBA rigid circuit board (6) are arranged corresponding to the keys (3).

3. The novel light guide plate keypad that is water vapor and dust proof according to claim 2, characterized in that: The left-right symmetrical array of the light guide plate housing (1) is provided with second positioning holes (8), and the left-right symmetrical array of the PCBA rigid circuit board (6) is provided with first positioning holes (7) which are aligned with the second positioning holes (8).

4. The novel light guide plate keypad that is water vapor and dust proof according to claim 1, characterized in that: The key hole (2) and the button (3) are both arranged in a stepped manner, and the thickness of the mold silicone (4) is equal to the gap between the key hole (2) and the button (3).

5. The novel light guide plate keypad that is water vapor and dust proof according to claim 2, characterized in that: The cross-sectional size of the PCBA rigid circuit board (6) is the same as the cross-sectional size of the groove (5), and the thickness value of the PCBA rigid circuit board (6) is equal to the thickness value of the groove (5).

6. The novel light guide plate keypad that is water vapor and dust proof according to claim 1, characterized in that: The light guide plate housing (1) is an aluminum alloy front housing, the buttons (3) are provided in a variety of models, and correspondingly, a variety of types of silicone molds are provided.

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