CN203689256U - Electronic product - Google Patents

Abstract

In order to overcome the problem of using dispensing glue to glue the screen and the front case in the prior art, the excess adhesive is easy to overflow from the vertical gap between the side of the screen and the front case, which will affect the bonding strength and pollute the electronic products For the problem of appearance, the utility model provides an electronic product that can prevent the adhesive from overflowing, which includes a front case, a rear case and electronic components. The front case and the rear case form a storage space, and the electronic components are placed in the storage space; A screen is installed on the outer surface of the front shell; the outer periphery of the front shell is recessed to form the installation part of the screen, and the installation part includes a horizontal support part and a vertical limit part; wherein, a second screen is formed between the lower surface and the side of the screen. A chamfer, a second chamfer is formed between the horizontal support part and the vertical limiting part, and a glue back area is formed between the first chamfer and the second chamfer. Using the electronic product provided in this example can effectively prevent the adhesive from overflowing and prevent the appearance from being polluted.

Description

an electronic product

technical field

The utility model relates to electronic products, in particular to electronic products with screens.

Background technique

At present, in addition to a small amount of electronic products, some still use display panels for display, and keys are used for input and control. More and more electronic products are controlled by touch screens. Some products integrate touch screens and display panels to form touch display panels; such as mobile phones, tablet computers, e-books and so on. There are fewer and fewer buttons, generally only 1-3 buttons, and the rest of the control and input are all performed through the touch screen. For convenience of description, the above-mentioned touch screen, display panel and touch display panel are collectively referred to as a panel.

In the prior art, the screen is pasted on the casing by an adhesive. As shown in Figures 1-4, it includes a front case 2, a rear case 4 and electronic components, the front case 2 and the rear case 4 form an accommodation space, and the electronic components are placed in the accommodation space; wherein , the electronic components shown in the figure include a PCB board 6, a screen 1 is installed on the front case 2, and the screen 1 is a touch screen; The part includes a horizontal support part 2a and a vertical limit part 2b; the screen 1 includes an upper surface 11, a lower surface 12 and four sides 13; between the lower surface 11 of the screen 1 and the horizontal support part 2a is Glue dispensing area 21, adhesive 5 is set in the dispensing area 21 to fix the screen 1 in the installation part; a vertical direction is formed between the side 13 of the screen 1 and the vertical stopper 2b. Gap 23. Meanwhile, its display panel 3 is disposed under its horizontal support portion 2 a through the buffer foam 61 .

Simultaneously, two overflowing glue grooves 22 are also provided on its horizontal supporting surface 2c, and the adhesive 5 (this adhesive is a molten semifluid, is toothpaste-like in normal state, commonly known as glue) is evenly dripped onto the front on the dispensing area 21 of the shell 2; then put the screen 1 into the installation part of the screen 1 of the front shell 2, in order to ensure good bonding and sealing between the adhesive 5 and the screen 1 and the front shell 2, this It is necessary to apply a certain external force on the upper surface 11 of the screen 1 in the direction shown by the arrow in Fig. Make sufficient contact to maximize the bonding area and bond strength. Because adhesive 5 is the semi-fluid of semi-molten state, the precision of the equipment of dripping adhesive 5 is limited, the dosage of dripping adhesive 5 is difficult to accurately control, redundant adhesive 5 except flowing in two overflow glue grooves, Some or a small amount of excess adhesive 5 can easily overflow from the vertical gap 23 between the side 13 of the screen 1 and the front case 2, affecting the bonding strength and polluting the appearance of the product. Existing methods generally adopt continuous debugging and training of dispensing personnel to minimize the overflow of glue.

Utility model content

In order to overcome the problem of using dispensing glue to glue the screen and the front case in the prior art, the excess adhesive is easy to overflow from the vertical gap between the side of the screen and the front case, which will affect the bonding strength and pollute the electronics. To solve the problem of product appearance, the utility model provides an electronic product that can prevent the adhesive from overflowing.

The electronic product provided by the embodiment of the present invention includes a front case, a rear case and electronic components, the front case and the rear case form a storage space, and the electronic components are placed in the storage space;

A screen is installed on the outer surface of the front shell;

The outer periphery of the front shell is recessed to form the installation part of the screen, and the installation part includes a horizontal support part and a vertical stop part;

The screen includes an upper surface, a lower surface and four sides;

There is a dispensing area between the lower surface of the screen and the horizontal supporting part, and an adhesive is arranged in the dispensing area to fix the screen in the installation part;

A vertical gap is formed between the side of the screen and the vertical stopper;

Wherein, a first chamfer is formed between the lower surface and the side of the screen, a second chamfer is formed between the horizontal support part and the vertical limiting part, and a gap between the first chamfer and the second chamfer is formed. Form a glue back area.

Using the electronic product provided in this example, by setting chamfers between the lower surface and the side of the screen, and setting chamfers between the horizontal support surface and the vertical limit surface of the mounting part of the front shell, between the two chamfers Form a glue back area, connect the dispensing area and the vertical gap through the glue back area, so that when the adhesive overflows through the vertical gap, the channel will gradually shrink, forming a physical seal, which can effectively prevent the adhesive from overflowing The role of preventing pollution to the appearance. There are no strict requirements on the amount of adhesive dripping, and the requirements for operators are greatly reduced, thereby greatly reducing the work intensity of dispensing personnel, and reducing the training time for dispensing personnel and material loss during the training process; at the same time The accuracy requirements for dispensing equipment can be reduced, and ordinary dispensing equipment can be used. The difficulty of operation and equipment cost can be reduced, and the production yield of the production line can be improved. There is no need to repeatedly adjust the vertical gap between the side of the screen and the front case, which reduces the precision requirements for the screen and the front case; meanwhile, it also reduces the precision requirements for the equipment for processing the two materials of the front case and the screen.

Preferably, the screen is a touch screen or a display panel, or a touch display panel integrating a touch screen and a display panel.

Preferably, the upper surface of the horizontal supporting part is called a horizontal supporting surface, and the inner surface of the vertical limiting part perpendicular to the horizontal supporting surface is called a vertical limiting surface;

The dispensing area is arranged between the lower surface of the screen and the horizontal support surface;

The vertical gap is set between the side of the screen and the vertical limiting surface.

Preferably, a glue overflow groove is also provided on the glue dispensing area. The glue overflow tank can further prevent glue overflow.

Preferably, the thickness of the dispensing area is Wa, the thickness of the glue back area is Wb, and the width of the vertical gap is Wc, wherein, Wa>Wb>Wc.

Preferably, the thickness Wa of the dispensing area of the electronic product is 0.2-0.3 mm, the thickness Wb of the glue-back area is 0.1-0.2 mm; the width Wc of the vertical gap is 0.05-0.1 mm.

Preferably, the screen is a touch screen, and a display panel is installed under the horizontal support part, and buffer foam is provided between the display panel and the horizontal support part.

Preferably, a waterproof ring is further provided between the front shell and the rear shell.

Preferably, the front shell and the rear shell are fastened by screws.

Preferably, the screen includes a sensor layer, an adhesive layer and a protective panel stacked sequentially from bottom to top.

Description of drawings

Figure 1 is a three-dimensional exploded schematic diagram of the overall structure of an electronic product;

Fig. 2 is a three-dimensional schematic diagram of an electronic product provided in the prior art;

Fig. 3 is a schematic cross-sectional view at A-A in Fig. 2;

Fig. 4 is an enlarged schematic diagram of place C in Fig. 3;

Fig. 5 is a three-dimensional schematic diagram of an electronic product provided in a specific embodiment of the present invention;

Fig. 6 is a schematic sectional view at B-B in Fig. 5;

Figure 7 is an enlarged schematic view at D in Figure 6;

Fig. 8 is the schematic diagram after dispensing in Fig. 7;

FIG. 9 is a simplified schematic diagram after deleting some structures and lines in FIG. 7 .

Among them, 1. Screen; 2. Front shell; 3. Display panel; 4. Back shell; 5. Adhesive; 6. PCB board; 7. Waterproof ring; 11. Upper surface; 12. Lower surface; 13. Side ; CA, first chamfer; CB, second chamfer; 21, dispensing area; 22, overflow glue tank; 23, vertical clearance; 24, back glue area; 2c, horizontal support surface; 2d, vertical limit surface; 61, buffer foam.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be 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 intended to limit the utility model.

Example

As shown in Figures 5-8, Figure 5 is a schematic perspective view of an electronic product, Figure 6 is a schematic cross-sectional view at B-B in Figure 5, and Figure 7 is an enlarged schematic view at D in Figure 6; where Figure 6 and Figure 7 are The schematic diagram before dispensing, and Fig. 8 is the schematic diagram after dispensing; this example will specifically illustrate the electronic product provided by the utility model, which includes a front shell 2, a rear shell 4 (or a back cover) and electronic components, so An accommodating space is formed in the front case 2 and the rear case 4, and the electronic components are placed in the accommodating space;

A screen 1 is installed on the outer surface of the front shell 2;

In order to enable readers to understand the utility model more straightforwardly, after deleting some redundant lines and structures in Figure 7, Figure 9 is formed. The installation part, the installation part includes a horizontal support part 2a and a vertical limit part 2b;

The screen 1 includes an upper surface 11, a lower surface 12 and four sides 13;

Between the lower surface 12 of the screen 1 and the horizontal support part 2a is a dispensing area 21, and an adhesive 5 is arranged in the dispensing area 21 to fix the screen 1 in the installation part; FIG. 7 is It is a schematic diagram between dispensing, and FIG. 8 is a schematic diagram after dispensing adhesive 5 in the dispensing area 21 and applying pressure in the direction indicated by the arrow in the figure on the upper surface 11 of the screen 1. Applying this pressure can promote the screen 1 The lower surface 12 is in full contact with the adhesive 5 and at the same time promotes the adhesive 5 to be in sufficient contact with the front shell 2, so as to maximize the bonding area and bonding strength.

A vertical gap 23 is formed between the side surface 13 of the screen 1 and the vertical limiting portion 2b;

Wherein, a first chamfer CA is formed between the lower surface 12 and the side surface 13 of the screen 1, a second chamfer CB is formed between the horizontal support portion 2a and the vertical limiting portion 2b, and the first chamfer A glue-back area 24 is formed between CA and the second chamfer CB.

As we all know, the current electronic products use the combination of the front shell 2 and the rear shell 4 to form a closed space, and electronic components are arranged in the space, and the electronic components include PCB board 6 (full name in English: Printed Circuit Board, full name in Chinese: printed circuit board), Batteries (not shown in the figure), etc., generally in mobile phones, tablet computers and other electronic products, there are also cameras, SIM card slots, SD card slots, audio output terminals, USB, etc. in the housing directly set on the PCB board 6 or connected to the components on the PCB board 6. The audio hole exposing the audio output terminal and the USB hole exposing the USB etc. are provided on the front shell, because they are not related to the utility model, so there is no elaboration in this example.

The screen 1 is a touch screen or a display panel, or a touch display panel that integrates a touch screen and a display panel. As a specific implementation manner, the screen 1 in this example is a touch screen. Its display panel 3 is set separately from the touch screen.

As a preferred manner, as shown in FIG. 6 and FIG. 7 , preferably, a waterproof ring 7 is also provided between the front shell 2 and the rear shell 4 . Adopting the waterproof ring 7 can further improve its sealing and waterproof performance.

As for the connection between the front case 2 and the rear case 4 , it can be connected in a buckle manner, which is a detachable connection. Generally, the user can disassemble the rear case 4 (or the back cover), and insert or remove the SIM card, SD card and battery by themselves. At present, most of the products of mobile phones and tablet computers adopt the above method. There is also a method of fastening the front shell 2 and the rear shell 4 with screws to connect the two, specifically, setting threaded holes on the front shell 2 and the rear shell 4 correspondingly, and then inserting the screws into the above-mentioned threaded holes in sequence, The front shell 2 and the rear shell 4 are screwed together. In this way, the connection is more secure and reliable. However, this method is generally not easy to disassemble, and users generally do not disassemble it by themselves.

Regarding the display panel 3, it generally can adopt LCD (full name in English: Liquid Crystal Display, full name in Chinese: liquid crystal display) or LED (full name in English: Light Emitting Diode, full name in Chinese: Light Emitting Diode) display screen, or those skilled in the art Other known display panels 3 are not specifically improved in this example, so details are not repeated here.

Touch screen (English full name: Touch Screen), also known as "touch screen" and "touch panel", is a sensing device that can receive touch information. When the graphic button on the touch screen is touched, the sensor layer on the touch screen Various connection devices can be driven according to pre-programmed programs to replace mechanical button panels. According to different principles, it can be divided into resistive type, capacitive type, surface acoustic wave type, vibration induction type, infrared type, projected capacitive type and so on. According to the number of touch points, it can be divided into single-point type, multi-point type and so on. For example, an existing common touch screen generally has the following structure: it includes a sensor layer, an adhesive layer and a protective panel stacked sequentially from bottom to top. In this example, the touch screen can adopt various structures well known to those skilled in the art, and in this example, a capacitive screen supporting multi-point triggering is preferably used. Since it is well known to those skilled in the art, it will not be described in detail.

In this example, the screen 1 and the display panel 3 are set separately, wherein the screen 1 is installed on the horizontal support part 2a in Fig. 6-9, and the display panel 3 is installed under the horizontal support part 2a, and As shown in FIGS. 6-9 , a buffer foam 61 is provided between the display panel 3 and the horizontal support portion 2a. In this way, the display panel 3 is fixed in the above-mentioned front case 2 .

As shown in FIG. 9 , for those skilled in the art to understand more straightforwardly, the upper surface of the horizontal support portion 2a is called a horizontal support surface 2c, and the inside of the vertical limiting portion 2b is connected to the horizontal support surface 2c. The vertical inner surface is called the vertical limit surface 2d;

Then the dispensing area 21 is set between the lower surface 12 of the screen 1 and the horizontal support surface 2c; the vertical gap 23 is set between the side 13 of the screen 1 and the vertical limit surface 2d between.

Preferably, as shown in FIGS. 6-9 , the glue dispensing area 21 is further provided with a glue overflow groove 22 . Using the overflow glue tank 22 can further prevent glue overflow. For example, the depth of the glue overflow groove 22 is 0.2-0.3mm, and the width is 0.2-0.3mm.

As shown in Figures 7-9, the vertical distance between the lower surface 12 of the screen 1 and the horizontal support surface 2c of the horizontal support part 2a in the figure is called the thickness of the dispensing area 21, which is marked as Wa (that is, glue The thickness of the mixture 5), the vertical distance between the first chamfer CA and the second chamfer CB is called the thickness of the adhesive back area 24, marked as Wb, and the side 13 and the vertical limit of the screen 1 The width between the planes 2d is referred to as the width of the vertical gap 23, marked as Wc, where Wa>Wb>Wc. In this example, the thickness Wa of the dispensing area 21 of the preferred electronic product is 0.2-0.3 mm, and the thickness Wb of the glue-back area 24 is 0.1-0.2 mm; the width Wc of the vertical gap 23 is 0.05-0.1 mm. mm. For example, in this example, Wa=0.2mm, Wb=0.1mm, Wc=0.075mm.

Because according to the principle of fluid pressure loss, when the diameter of the pipe suddenly shrinks to a very small size, the energy loss of the fluid is very large, and the fluid cannot continue to flow forward; and when the diameter of the pipe suddenly expands, the energy loss of the fluid is relatively small. much smaller.

According to the aforementioned pressure loss principle, adopting the scheme of the present utility model, the adhesive 5 passes through two cross-sectional reductions and the change process of the flow direction (flowing from the Wa area to the Wb area and then flowing to the Wc area), in the glue back area. 24 forms a stagnant water zone or a vortex zone. The adhesive 5 does not participate in the main flow in this zone, but continuously swirls to accelerate liquid friction or cause particle collisions, resulting in local energy loss; Severe friction produces local energy loss; when the liquid flows through the local device, the magnitude and direction of the flow velocity change sharply, and the velocity distribution law on each section is also constantly changing, causing additional friction and consuming energy. The pressure of the forward flow is lost one by one, and the power of the forward flow gradually becomes smaller until it reaches 0, thereby realizing the sealing of the adhesive 5 so that the adhesive 5 no longer overflows.

Using the electronic product provided in this example, chamfering is provided between the lower surface 12 and the side surface 13 of the screen 1, and chamfering is provided between the horizontal support surface 2c and the vertical limit surface 2d of the mounting part of the front case 2 , form a glue back area 24 between the two chamfers, and connect the glue dispensing area 21 and the vertical gap 23 through the glue back area 24, so that when the adhesive 5 overflows through the vertical gap 23, the channel gradually narrows, forming a physical After making hundreds of samples using the scheme given in this example, the inventor found that there was no leakage of the adhesive 5. It shows that it can effectively prevent the overflow of the adhesive 5 and prevent the appearance from being polluted.

There are no strict requirements on the drip volume of the adhesive 5, and the requirements for operators are greatly reduced, thereby greatly reducing the work intensity of the dispensing personnel, and reducing the training time for the dispensing personnel and the material loss caused during the training process; At the same time, the accuracy requirements for dispensing equipment can be reduced, and ordinary dispensing equipment can be used. The difficulty of operation and equipment cost can be reduced, and the production yield of the production line can be improved. There is no need to repeatedly adjust the vertical gap 23 between the side 13 of the screen 1 and the front case 2, which reduces the accuracy requirements for the screen 1 and the front case; meanwhile, it also reduces the accuracy requirements for the equipment for processing the two materials of the front case and the screen 1 .

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (9)

1. An electronic product, comprising a front case, a rear case and a PCB board, wherein an accommodation space is formed in the front case and the rear case, and the PCB board is placed in the accommodation space; A screen is installed on the outer surface of the front shell; The outer periphery of the front shell is recessed to form the installation part of the screen, and the installation part includes a horizontal support part and a vertical stop part; The screen includes an upper surface, a lower surface and four sides; There is a dispensing area between the lower surface of the screen and the horizontal supporting part, and an adhesive is arranged in the dispensing area to fix the screen in the installation part; A vertical gap is formed between the side of the screen and the vertical stopper; It is characterized in that a first chamfer is formed between the lower surface and the side of the screen, a second chamfer is formed between the horizontal support part and the vertical limiting part, and the first chamfer and the second chamfer A back glue zone is formed between them. 2. The electronic product according to claim 1, wherein the screen is a touch screen or a display panel, or a touch display panel integrating a touch screen and a display panel. 3. The electronic product according to claim 1, wherein the upper surface of the horizontal support part is called a horizontal support surface, and the inner surface of the vertical limiting part perpendicular to the horizontal support surface is called a vertical support surface. limit surface; The dispensing area is arranged between the lower surface of the screen and the horizontal support surface; The vertical gap is set between the side of the screen and the vertical limiting surface. 4. The electronic product according to claim 3, characterized in that, a glue overflow groove is also provided on the glue dispensing area. 5. electronic product according to claim 3, it is characterized in that, the thickness of described dispensing area is Wa, the thickness of described back glue area is Wb, and the width of described vertical gap is Wc, and wherein, Wa> Wb>Wc. 6. The electronic product according to claim 5, wherein the thickness Wa of the dispensing area of the electronic product is 0.2-0.3mm, and the thickness Wb of the glue-back area is 0.1-0.2mm; The width Wc of the gap is 0.05-0.1mm. 7. The electronic product according to claim 1, wherein the screen is a touch screen, and a display panel is installed under the horizontal support part, and a display panel is provided between the display panel and the horizontal support part. Cushioning foam. 8 . The electronic product according to claim 7 , wherein the touch screen comprises a sensor layer, an adhesive layer and a protective panel stacked sequentially from bottom to top. 9. The electronic product according to claim 1, wherein a waterproof ring is further provided between the front case and the rear case.

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