High-sealing mutual capacitance type touch screen structure

Abstract

The utility model discloses a high-sealing mutual capacitance type touch screen structure which comprises a circuit board and a touch screen panel above the circuit board, an installation carrier plate is fixedly connected to the edge of the top face of the circuit board, a heat insulation plate is attached to the top face of the installation carrier plate, a connecting column is arranged on the top face of the installation carrier plate, and the heat insulation plate is connected with the connecting column. Connecting grooves matched with the connecting columns are formed in the bottom surface of the heat insulation plate; according to the utility model, the mounting carrier plate, the rectangular sealing ring and the heat insulation plate are arranged between the circuit board and the touch screen panel, and the heat insulation plate made of the high-temperature-resistant heat insulation cotton material is arranged between the circuit board and the touch screen panel, so that the circuit board and the touch screen panel are separated through the heat insulation plate; the high sealing performance is met, meanwhile, mutual heat transfer between the circuit board and the touch screen panel is reduced, the rectangular sealing ring is arranged on the periphery of the heat insulation plate, the overall waterproof performance is improved, and the short circuit phenomenon caused by external liquid permeation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of touch screen structures, in particular to a highly sealed mutual capacitance touch screen structure. Background Art

[0002] TP touch screen is composed of panel, contact sensor, flexible circuit board), touch chip and other auxiliary materials. Touch screen is divided into resistive touch and capacitive touch. Capacitive touch screen is widely used in mobile phones and tablets. Capacitive touch screen can realize multi-point touch, sensitive operation, not easy to touch by mistake and high durability.

[0003] In the prior art, a Chinese patent with announcement number CN211787053U discloses a waterproof capacitive touch screen device, which includes a shell, a cover plate, a screw, a mounting cavity, a notch, a touch screen and a first sealing gasket. The shell is provided with a mounting cavity inside, and the mounting cavity is provided with a touch screen inside. The top of the shell is provided with a notch for convenient use of the touch screen. The bottom end of the shell is fixedly connected to the cover plate by a screw, and the first sealing gasket is adhered to the end surface where the cover plate is connected to the shell. The mounting cavity is provided with a fixed frame integrally formed with the shell, and the inner side of the fixed frame is provided with a limit frame parallel to the fixed frame, and the touch screen is located on the inner side of the limit frame.

[0004] Based on the above, existing capacitive touch screens are often installed by direct contact with the circuit board, which results in poor sealing between the capacitive touch screen and the circuit board and is not conducive to heat dissipation of the circuit board.

[0005] To this end, a highly sealed mutual capacitive touch screen structure is proposed, which has the advantages of high sealing, good heat insulation effect and convenient heat dissipation of the circuit board, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a highly sealed mutual capacitive touch screen structure.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a highly sealed mutual capacitive touch screen structure, comprising a circuit board and a touch screen panel above, a mounting carrier board fixedly connected to the edge of the top surface of the circuit board, and a heat insulation board is attached to the top surface of the mounting carrier board, a connecting column is arranged on the top surface of the mounting carrier board, a connecting groove matched with the connecting column is arranged on the bottom surface of the heat insulation board, the connecting column and the connecting groove are interference connected, a touch screen panel is arranged above the heat insulation board, and a plurality of fixing parts are bonded and fixed between the touch screen panel and the heat insulation board, a rectangular sealing ring is installed on the outer periphery of the heat insulation board, and the rectangular sealing ring is bonded to the edge of the bottom surface of the touch screen panel, a plurality of heat dissipation fins are integrally arranged on the bottom surface of the mounting carrier board, a plurality of heat dissipation openings are arranged at the edge of the surface of the circuit board corresponding to the heat dissipation fins, and a plurality of the heat dissipation fins extend into a plurality of heat dissipation openings respectively.

[0008] As a further description of the above technical solution: a contact sensor is provided on the bottom surface of the touch screen panel, and the contact sensor is in contact with the top surface of the heat insulation board.

[0009] As a further description of the above technical solution: the fixing member is arranged in a T-shaped structure between the touch screen panel and the heat insulation board, and the protruding part of the fixing member is embedded and installed in the corresponding groove opened on the top surface of the heat insulation board.

[0010] As a further description of the above technical solution: a rubber surface is arranged around the side surface of the heat insulation board, and the rubber surface is bonded to the inner side surface of the rectangular sealing ring.

[0011] As a further description of the above technical solution: mounting holes are provided at the four corners of the surface of the mounting carrier, and screws connected to the circuit board are inserted into each mounting hole, and a clearance opening is provided in the middle position of the mounting carrier corresponding to the electronic components of the circuit board.

[0012] As a further description of the above technical solution: the heat dissipation fins are composed of a metal square sheet and a plurality of strip openings equidistantly opened on the surface thereof.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, a mounting carrier, a rectangular sealing ring, and a heat insulation board are arranged between the circuit board and the touch screen panel. By arranging a heat insulation board made of high-temperature resistant heat insulation cotton between the circuit board and the touch screen panel, the circuit board and the touch screen panel are isolated by the heat insulation board, and the mutual transfer of heat between the circuit board and the touch screen panel is reduced while meeting high sealing performance. By arranging a rectangular sealing ring on the periphery of the heat insulation board, the overall waterproof performance is increased to avoid short circuit caused by external liquid penetration. By using a connecting column and a connecting groove at the bottom of the heat insulation board to be connected with the mounting carrier through interference, the design of the mounting hole, the screw and the clearance opening is combined. The arrangement provides space for the electronic components on the circuit board while satisfying the fixing of the mounting carrier, making the overall structure more reasonable and facilitating the assembly of the circuit board and the touch screen panel. At the same time, a plurality of heat dissipation fins are integrally arranged at the bottom of the mounting carrier, and each heat dissipation fin extends to the heat dissipation port correspondingly opened on the surface of the circuit board. When the circuit board becomes hot, the heat of the circuit board can be transferred to the mounting carrier under the action of the thermal conductive silica gel and dissipated by the heat dissipation fins of the mounting carrier, thereby minimizing the heat transfer from the circuit board to the touch screen panel, and avoiding the mutual superposition of heat with the touch screen panel while satisfying the heat dissipation of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a highly sealed mutual capacitive touch screen structure of the utility model;

[0016] Figure 2 This is a schematic diagram of a mounting carrier structure of a highly sealed mutual capacitive touch screen structure of the utility model;

[0017] Figure 3 The utility model is a schematic diagram of a heat insulation board structure of a highly sealed mutual capacitive touch screen structure.

[0018] Legend:

[0019] 1. Circuit board; 2. Touch screen panel; 3. Mounting carrier; 4. Rectangular sealing ring; 5. Heat insulation board; 6. Fixing parts; 7. Connecting column; 8. Screw; 9. Heat dissipation port; 10. Heat dissipation fin; 11. Mounting hole; 12. Clearance port; 13. Connection groove; 14. Rubber surface. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] According to an embodiment of the utility model, a highly sealed mutual capacitive touch screen structure is provided.

[0022] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3 As shown, a highly sealed mutual capacitive touch screen structure according to an embodiment of the utility model comprises a circuit board 1 and a touch screen panel 2 on the top, a mounting carrier 3 is fixedly connected to the edge of the top surface of the circuit board 1, and a heat insulation board 5 is attached to the top surface of the mounting carrier 3, a connecting column 7 is arranged on the top surface of the mounting carrier 3, a connecting groove 13 adapted to the connecting column 7 is arranged on the bottom surface of the heat insulation board 5, the connecting column 7 is interference-connected with the connecting groove 13, a touch screen panel 2 is arranged on the top of the heat insulation board 5, and a plurality of fixing members 6 are bonded and fixed between the touch screen panel 2 and the heat insulation board 5, and a rectangular sealing ring is installed on the outer periphery of the heat insulation board 5 4, and the rectangular sealing ring 4 is bonded to the edge of the bottom surface of the touch screen panel 2, and a plurality of heat dissipation fins 10 are integrally arranged on the bottom surface of the mounting carrier 3, and a plurality of heat dissipation ports 9 are opened at the edge of the surface of the circuit board 1 corresponding to the heat dissipation fins 10, and the plurality of heat dissipation fins 10 extend into the plurality of heat dissipation ports 9 respectively, wherein the setting of the fixing member 6 can maintain the reliability of the connection between the touch screen panel 2 and the heat insulation board 5, and the separation phenomenon is not easy to occur, thereby ensuring the sealing performance of the whole device, and the material of the heat insulation board 5 is high temperature resistant heat insulation cotton, so as to achieve the effect of heat blocking between the circuit board 1 and the touch screen panel 2;

[0023] In one embodiment, a contact sensor is provided on the bottom surface of the touch screen panel 2, and the contact sensor is in contact with the top surface of the thermal insulation board 5. The contact sensor is provided so as to be electrically connected to the chip on the circuit board 1, and a voltage stabilizer is provided on the circuit board 1 corresponding to the contact sensor. The specific technology is well-known in the art and will not be elaborated in detail.

[0024] In one embodiment, the fixing member 6 is arranged in a T-shaped structure between the touch screen panel 2 and the heat insulation board 5 , and the protruding portion of the fixing member 6 is embedded in a corresponding groove on the top surface of the heat insulation board 5 .

[0025] In one embodiment, a rubber surface 14 is provided around the side of the insulation board 5, and the rubber surface 14 is bonded to the inner side of the rectangular sealing ring 4. The setting of the rubber surface 14 allows the insulation board 5 and the rectangular sealing ring 4 to be sealed and connected, with good waterproof effect.

[0026] In one embodiment, mounting holes 11 are provided at the four corners of the surface of the mounting carrier 3, and a screw 8 connected to the circuit board 1 is inserted into each mounting hole 11. A clearance opening 12 is provided in the middle position of the mounting carrier 3 corresponding to the electronic components of the circuit board 1. The mounting holes 11 and the screws 8 are provided to facilitate the fixed installation of the mounting carrier 3, and the clearance opening 12 is provided to make way for the electronic components on the circuit board 1, so as to facilitate assembly.

[0027] In one embodiment, the heat sink 10 is composed of a metal square sheet and a plurality of strip-shaped openings equidistantly opened on its surface. Through the arrangement of the heat sink 10, since the mounting substrate 3 is connected to the circuit board 1 using thermally conductive silicone to facilitate heat conduction, and through the arrangement of the heat sink 10, the purpose of providing a heat dissipation structure for the circuit board 1 is achieved.

[0028] Working principle:

[0029] When in use, an insulation board 5 made of high-temperature resistant insulation cotton material is arranged between the circuit board 1 and the touch screen panel 2, so that the circuit board 1 and the touch screen panel 2 are blocked by the insulation board 5, and the mutual heat transfer between the circuit board 1 and the touch screen panel 2 is reduced while meeting the high sealing performance. A rectangular sealing ring 4 is arranged on the periphery of the insulation board 5 to increase the overall waterproof performance and avoid short circuits caused by external liquid penetration. The mounting carrier 3 is connected by interference fit with the connecting column 7 and the connecting groove 13 at the bottom of the insulation board 5, so that the electronic components on the circuit board 1 are fixed while meeting the requirements of the mounting carrier 3. Providing a clearance space is convenient for assembling the circuit board 1 and the touch screen panel 2. When the circuit board 1 dissipates heat, a plurality of heat dissipation fins 10 are integrally arranged at the bottom of the mounting substrate 3, and each heat dissipation fin 10 extends to a heat dissipation port 9 correspondingly opened on the surface of the circuit board 1. When the circuit board 1 becomes hot, the heat of the circuit board 1 can be transferred to the mounting substrate 3 under the action of thermal conductive silica gel, and dissipated by the heat dissipation fins 10 of the mounting substrate 3, thereby minimizing the heat transfer of the circuit board 1 to the touch screen panel 2, and avoiding the mutual superposition of heat with the touch screen panel 2 while satisfying the heat dissipation of the circuit board 1.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A highly sealed mutual capacitive touch screen structure, comprising a circuit board (1) and a touch screen panel (2) thereon, characterized in that: A mounting carrier (3) is fixedly connected to the edge of the top surface of the circuit board (1), and a heat insulation board (5) is attached to the top surface of the mounting carrier (3). A connecting column (7) is arranged on the top surface of the mounting carrier (3). A connecting groove (13) adapted to the connecting column (7) is provided on the bottom surface of the heat insulation board (5). The connecting column (7) is interference-connected with the connecting groove (13). A touch screen panel (2) is arranged above the heat insulation board (5), and a space between the touch screen panel (2) and the heat insulation board (5) is formed. A plurality of fixing members (6) are bonded and fixed, a rectangular sealing ring (4) is sleeved and installed on the outer periphery of the heat insulation board (5), and the rectangular sealing ring (4) is bonded to the edge of the bottom surface of the touch screen panel (2), a plurality of heat dissipation fins (10) are integrally arranged on the bottom surface of the mounting carrier (3), a plurality of heat dissipation openings (9) are opened at the edge of the surface of the circuit board (1) corresponding to the heat dissipation fins (10), and a plurality of the heat dissipation fins (10) extend into the plurality of heat dissipation openings (9) respectively.

2. The highly sealed mutual capacitive touch screen structure according to claim 1, characterized in that: A contact sensor is provided on the bottom surface of the touch screen panel (2), and the contact sensor is in contact with the top surface of the heat insulation board (5).

3. The highly sealed mutual capacitive touch screen structure according to claim 1, characterized in that: The fixing member (6) is arranged in a T-shaped structure between the touch screen panel (2) and the heat insulation board (5), and the raised portion of the fixing member (6) is embedded and installed in a corresponding groove opened on the top surface of the heat insulation board (5).

4. The highly sealed mutual capacitive touch screen structure according to claim 1, characterized in that: A rubber surface (14) is provided around the side surface of the heat insulation board (5), and the rubber surface (14) is bonded to the inner side surface of the rectangular sealing ring (4).

5. The highly sealed mutual capacitive touch screen structure according to claim 1, characterized in that: The four corners of the surface of the mounting carrier (3) are provided with mounting holes (11), and a screw (8) connected to the circuit board (1) is inserted into each mounting hole (11), and a clearance opening (12) corresponding to the electronic components of the circuit board (1) is provided in the middle position of the mounting carrier (3).

6. The highly sealed mutual capacitive touch screen structure according to claim 1, characterized in that: The heat dissipation fin (10) is composed of a metal square sheet and a plurality of strip openings equidistantly provided on its surface.

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