Indoor terminal narrow frame structure and indoor terminal

Abstract

The utility model provides an indoor terminal narrow frame structure, which comprises a front shell and an attached screen attached to the front shell, and the front shell and the attached screen can be stably combined by arranging six dispensing positions and gum surfaces on two sides on the front shell, so that the defects of deformation or color change and the like in a low-temperature environment are prevented; the glue overflowing groove is formed in the glue dispensing position, the opening is formed in the side, away from the edge of the front shell, of the glue overflowing groove, the two ends of the glue overflowing groove extend to the opening, the depth and the width of the glue overflowing groove are set, and therefore excessive hot melt glue can flow into the glue overflowing groove and is prevented from flowing to the edge of the front shell to affect attractiveness. The front shell is made of polycarbonate, according to the characteristic that the molecular structure of polycarbonate can still keep certain softness and elasticity at low temperature, it is ensured that good performance can be kept under the low-temperature condition, the risk of breakage or embrittlement is not likely to happen, meanwhile, polycarbonate has the impact strength, and the service life of the polycarbonate is prolonged. It is guaranteed that the narrow frame structure can still resist impact and vibration in cold weather, and it is guaranteed that the narrow frame structure is not prone to deformation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bathroom, especially a narrow frame structure of indoor terminal and indoor terminal. BACKGROUND

[0002] At present, in the building intercom industry, according to market acceptance and trend, narrow frame design has returned to the public vision again, and has been widely recognized by the market. The screen ratio and narrow frame of terminal equipment become an important selling point of the product, and the screen ratio and narrow frame are closely related to product design. With the improvement of consumers' requirements for products, the requirements for screen ratio and narrow frame are also improving synchronously.

[0003] In the design process of narrow frame, the reduction of the frame causes the traditional adhesive method to be unable to meet the firmness of the combination of the attached screen and the front shell, and many technologies are transferred to the dispensing process. In the popularization process of dispensing technology, the deformation of materials in low-temperature environment brings great trouble to the use of IPS screen in low-temperature environment.

[0004] For example, the front shell is selected to be made of metal material, which can be machined or cast aluminum. The connection between the attached screen and the front shell is connected by dispensing, which can also solve the phenomenon of IPS screen image yellowing caused by material deformation in low temperature. However, the cost of this scheme is high, the cost of cast aluminum is more than 40 yuan, and the machining cost is even more than 110 yuan. If the front shell is selected to be made of injection molding material and embedded with metal material, the metal material is usually embedded with PC+ABS material by secondary injection molding. The connection between the attached screen and the front shell is connected by dispensing, which can also solve the phenomenon of IPS screen image yellowing caused by material deformation in low temperature. However, the cost of this scheme is higher than that of pure injection molding scheme, and the cost is about 30 yuan. At the same time, in the secondary injection molding, the combination of different materials may cause material cracking in the stress release process. If the front shell is selected to be made of injection molding material, PC+ABS material is usually used, and injection molding is used on the mold. The connection between the attached screen and the front shell is connected by dispensing. Although the cost is the lowest, about 4 yuan, in the process of combining with dispensing process, the equipment deforms in low-temperature environment, which causes stress to the IPS screen and causes the screen to yellow. Therefore, there is an urgent need for a scheme to solve the above problems. Utility model content

[0005] The utility model provides a kind of indoor terminal narrow frame structure and indoor terminal, and the above problems can be effectively solved.

[0006] The utility model is implemented as follows:

[0007] A kind of indoor terminal narrow frame structure, comprising.

[0008] a fitting screen;

[0009] a front shell, a periphery of a front surface of the front shell is respectively provided with a plurality of dispensing surfaces and a plurality of back adhesive surfaces, the dispensing surfaces and the back adhesive surfaces are arranged alternately; a plurality of glue overflow grooves are arranged on the dispensing surfaces, and the glue overflow grooves are arranged along edges of the front shell;

[0010] The dispensing surfaces are dispensed with glue, the back adhesive surfaces are adhered with glue, and the fitting screen is arranged on the front surface of the front shell in a dispensing and back adhesive manner.

[0011] As a further improvement, a plurality of dispensing positions are arranged at intervals on each dispensing surface, and one glue overflow groove is arranged on each dispensing position, the glue overflow groove is arranged as an opening away from one side of the edge of the front shell, and the two ends of the glue overflow groove extend to the opening.

[0012] As a further improvement, the dispensing surfaces are arranged on two opposite peripheries, the back adhesive surfaces are arranged on the other two opposite peripheries, one dispensing surface is arranged between the two back adhesive surfaces, and one back adhesive surface is arranged between the two dispensing surfaces.

[0013] As a further improvement, the front shell is in a square shape, the dispensing surfaces are arranged on long edges of the front shell, three dispensing positions away from each other are arranged on each dispensing surface, and two dispensing positions are arranged at corner edges of the square shape.

[0014] As a further improvement, the width of the glue overflow groove is 0.15mm-0.3mm, and the depth of the glue overflow groove is 0.1mm-0.25mm.

[0015] As a further improvement, hot melt glue is arranged on the dispensing surfaces, and 3M glue is arranged on the back adhesive surfaces.

[0016] As a further improvement, after the hot melt glue is dispensed, pressure maintaining is 12 minutes-20 minutes.

[0017] As a further improvement, the front shell is made of polycarbonate material.

[0018] The utility model also provides an indoor terminal containing the indoor terminal narrow frame structure.

[0019] The utility model discloses an advantageous effect is: through being provided with six point glue sites and two sides back glue surface in front shell, thereby can make front shell and the fit screen can be firmly combined, prevent the deformation or discoloration and so on defects under low temperature environment, set up overflow glue groove on the point glue site, and, overflow glue groove is provided with opening away from the front shell edge one side, both ends of overflow glue groove extend to the opening, and, set up the depth and width of overflow glue groove, make too much hot melt adhesive can flow into overflow glue groove and prevent flowing to the edge of front shell and affect the beautiful appearance, the front shell adopts polycarbonate material, according to the molecular structure of polycarbonate still can keep certain softness and elastic property under low temperature, thereby ensure under low temperature condition can keep good performance, not easy to break or the risk of embrittlement, and polycarbonate has impact strength, can guarantee that narrow frame structure can still resist impact and vibration under cold weather, guarantee not easy to deform. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, should understand, the following drawings only show some embodiments of the utility model, therefore should not be seen as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0021] Fig. 1 It is the explosion map of the utility model embodiment.

[0022] Fig. 2 It is the front view of the front shell of the utility model embodiment.

[0023] Fig. 3 It is the partial enlarged view of the front shell of the utility model embodiment.

[0024] Fig. 4 It is the sectional view of the utility model embodiment.

[0025] In the drawing:

[0026] 1, fit screen;

[0027] 2, front shell;21, point glue surface;211, point glue site;212, overflow glue groove;213, opening;22, back glue surface. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only to represent selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0029] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0030] Referring to Figs. 1-4 As shown in the drawings, a narrow frame structure of an indoor terminal includes a front shell 2 and a fitting screen 1 arranged in close contact with the front shell 2, and the front shell 2 is made of injection molding process.

[0031] Since the narrow frame structure can be used in a low temperature environment, the front shell 2 is made of polycarbonate material, that is, PC material, in view of the analysis and consideration of deformation at low temperature. The molecular structure of polycarbonate plastic can still maintain a certain softness and elasticity at low temperature, so as to ensure good performance at low temperature and reduce the risk of fracture or embrittlement; at the same time, polycarbonate plastic has excellent impact strength, which can maintain good properties even in a low temperature environment, so as to ensure that the narrow frame structure can still resist impact and vibration in cold weather, and ensure that it is not easy to deform.

[0032] In order to ensure that the front shell 2 and the fitting screen 1 can be firmly connected, the front shell 2 and the fitting screen 1 are connected and combined by point gluing and back gluing at the same time. Further, the front surface periphery of the front shell 2 is provided with a plurality of point gluing surfaces 21 and a plurality of back gluing surfaces 22, and the point gluing surfaces 21 and the back gluing surfaces 22 are arranged alternately. Moreover, a plurality of point gluing positions 211 are arranged at intervals on each point gluing surface 21.

[0033] Specifically, one of the glue dispensing surfaces 21 is arranged between two of the glue backing surfaces 22, and one of the glue backing surfaces 22 is arranged between two of the glue dispensing surfaces 21. In this embodiment, the front shell 2 is square-shaped, and the glue dispensing surfaces 21 are arranged on the long edges of the front shell 2. Each of the glue dispensing surfaces 21 is provided with three distantly arranged glue dispensing positions 211, and two of the glue dispensing positions 211 are arranged at the corners of the long edges of the square-shaped front shell 2, so that six glue dispensing surfaces 21 are formed on the upper and lower long edges of the front surface of the front shell 2. More specifically, hot melt glue can be arranged on the glue dispensing surfaces 21, and 3M glue can be arranged on the glue backing surfaces 22. That is, the front shell 2 and the attached screen 1 are connected by the six-point glue dispensing and two-side glue backing connection mode, so as to be firmly combined. This prevents the width of the edge of the front surface of the front shell 2 from being too small and the reliability of the connection from being unable to be ensured by using only the simple glue backing mode. In addition, because there is a difference in shrinkage rate between the plastic front shell 2 and the glass attached screen 1, the plastic front shell 2 is prone to shrinkage deformation in a low-temperature environment, and the hardening of the hot melt glue in a low-temperature environment can cause the attached screen 1 to deform and cause the IPS screen to display abnormally. By using the six-point glue dispensing and glue backing connection mode, the good extensibility of the foam base material of the glue backing and the firmness of the hot melt glue can ensure that the attached screen 1 and the front shell 2 are well connected and that the IPS screen displays normally.

[0034] More specifically, in order to prevent too much hot melt glue from being dispensed, an overflow groove 212 is arranged on each of the glue dispensing positions 211, so that too much hot melt glue can flow into the overflow groove 212 without affecting the attachment gap between the front shell 2 and the attached screen 1 or causing overflow of the hot melt glue and affecting the appearance. In this embodiment, the overflow groove 212 is arranged along the edge of the front shell 2, and the overflow groove 212 is provided with an opening 213 away from the side of the edge of the front shell 2. The two ends of the overflow groove 212 extend to the opening 213. When too much hot melt glue is arranged on the glue dispensing position 211, the hot melt glue flows into the overflow groove 212 without overflowing the edge of the front shell 2.

[0035] In order to make the overflow groove 212 have enough space to accommodate the overflow hot melt adhesive, the width of the overflow groove 212 is set to 0.15mm-0.3mm, and the depth of the overflow groove 212 is set to 0.1mm-0.25mm. Specifically, the width of the overflow groove 212 is set to 0.18mm-0.25mm, and the depth of the overflow groove 212 is set to 0.12mm-0.2mm. In this size range, the overflow groove 212 can not only have enough space to accommodate the overflow hot melt adhesive, but also prevent the overflow groove 212 from being too wide and too deep to affect the strength of the edge of the front shell 2. In the embodiment, the width of the overflow groove 212 is set to 0.2mm, and the depth of the overflow groove 212 is set to 0.15mm. In combination with the opening 213 on the inner side of the overflow groove 212, that is, the side of the overflow groove 212 away from the edge of the front shell 2, it is ensured that the hot melt adhesive (silicone adhesive) will not flow outward to cause overflow phenomenon after being extruded during the pressure maintaining process after dispensing is completed, and the appearance effect is affected. In the embodiment, after dispensing is completed, the front shell 2 and the attached screen 1 are placed in a tool jig and pressure maintained for 15 minutes, so as to ensure the attachment strength of the front shell 2 and the attached screen 1.

[0036] After the front shell 2 and the attached screen 1 are attached, the narrow frame structure is tested. First, the hanging weight test: the narrow frame structure is placed in a temperature box with a temperature of 40° and a humidity of 95±2%RH, the glass panel faces downward, the hanging weight mass below the panel is between 1.25kg and 1.5kg, and the test is continuously performed for 96 hours, and the test result is passed. Second, high and low temperature test: the narrow frame structure is placed in a low temperature test box and a high temperature test box, and the narrow frame structure is powered on to work for 16h, and the image imaging condition is observed, and the test result is passed. Through the experiment, the strength of the narrow frame structure is ensured.

[0037] The utility model further provides an indoor terminal containing the above-mentioned indoor terminal narrow frame structure. The indoor terminal can be a socket, a building intercom screen, a building access control screen, etc.

[0038] The above only describes preferred embodiments of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A narrow bezel structure for an indoor terminal, characterized in that, include: One-piece screen; A front shell, wherein the periphery of the front surface of the front shell is provided with a plurality of adhesive dispensing surfaces and a plurality of adhesive backing surfaces, the adhesive dispensing surfaces and the adhesive backing surfaces being arranged alternately; a plurality of glue overflow grooves are provided on the adhesive dispensing surfaces, the glue overflow grooves being arranged along the edge of the front shell; Adhesive is applied to the dispensing surface, and adhesive is applied to the backing surface. The bonding screen is bonded to the front surface of the front shell by dispensing and applying adhesive.

2. The indoor terminal narrow bezel structure according to claim 1, characterized in that, Each dispensing surface is provided with a plurality of dispensing positions at intervals, and each dispensing position is provided with an overflow groove. The side of the overflow groove away from the edge of the front shell is provided with an opening, and both ends of the overflow groove extend to the opening.

3. The indoor terminal narrow bezel structure according to claim 2, characterized in that, The adhesive dispensing surface is disposed on two opposite peripheries, and the adhesive backing surface is disposed on another two opposite peripheries. An adhesive dispensing surface is disposed between the two adhesive backing surfaces, and an adhesive backing surface is disposed between the two adhesive dispensing surfaces.

4. The indoor terminal narrow bezel structure according to claim 2, characterized in that, The front shell is square in shape, and the adhesive dispensing surface is provided on the long side of the front shell. Each adhesive dispensing surface is provided with three far apart adhesive dispensing positions, two of which are located at the corners of the square shape.

5. The indoor terminal narrow bezel structure according to any one of claims 1 to 4, characterized in that, The width of the overflow groove is set to 0.15mm to 0.3mm, and the depth of the overflow groove is set to 0.1mm to 0.25mm.

6. The indoor terminal narrow bezel structure according to claim 5, characterized in that, The dispensing surface is coated with hot melt adhesive, and the backing surface is coated with 3M adhesive.

7. The indoor terminal narrow bezel structure according to claim 6, characterized in that, After the hot melt adhesive is applied, the holding pressure is set to 12 to 20 minutes.

8. The indoor terminal narrow bezel structure according to claim 5, characterized in that, The front shell is made of polycarbonate material.

9. An indoor terminal, characterized in that, Including the indoor terminal narrow bezel structure as described in any one of claims 1-8.

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