Multi-layer metal foil shielding layer anti-electromagnetic interference touch screen

Abstract

The utility model discloses a kind of multi-layer metal foil shielding layer anti-electromagnetic interference touch screen, including touch screen body, metal shell is arranged outside touch screen body, the upper and lower ends between the metal shell and first shielding layer are all left gap, the inner wall of the metal shell is fixedly connected with support seat, the support seat is located first shielding layer side, first shielding layer is fixedly connected with support seat by screw, support seat about the bisecting line of metal shell is symmetrically distributed upside and downside, the outer wall of touch screen body is wrapped with third shielding layer, second shielding layer is provided on the outer wall of third shielding layer, first shielding layer is provided on the outer wall of second shielding layer, the upper and lower ends of first shielding layer, second shielding layer and third shielding layer are all in right angle hook shape, gap between metal shell and touch screen body and first shielding layer is all daubed with sealant. The device can be wrapped to touch screen body Shielding, thereby improve shielding effect, guarantee the service life of touch screen body.

Description

Technical Field

[0001] This utility model relates to the field of touch screen technology, specifically to a multi-layer metal foil shielding touch screen that resists electromagnetic interference. Background Technology

[0002] A touchscreen is an input device that allows direct operation on a screen using fingers or a stylus. It combines display and input functions and is widely used in various electronic products such as smartphones, tablets, ATMs, industrial control equipment, car navigation systems, and self-service terminals.

[0003] Currently, touchscreens are highly susceptible to electromagnetic interference during use, which can cause them to malfunction. To address this issue, a shielding layer is typically installed inside the touchscreen. However, existing shielding layers often fail to provide complete coverage and have poor shielding performance, thus requiring improvement. Utility Model Content

[0004] The purpose of this invention is to provide a multi-layer metal foil shielding touchscreen that resists electromagnetic interference, in order to solve the problem that the shielding layer mentioned in the background art cannot achieve a wrap-around shielding of the touchscreen.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer metal foil shielding electromagnetic interference-resistant touch screen, comprising a touch screen body, with a metal shell disposed on the outside of the touch screen body, characterized in that: the outer wall of the touch screen body is wrapped with a third shielding layer, the outer wall of the third shielding layer is provided with a second shielding layer, the outer wall of the second shielding layer is provided with a first shielding layer, the upper and lower ends of the first shielding layer, the second shielding layer and the third shielding layer are all in the shape of right-angle hooks, and the gaps between the metal shell and the touch screen body and the first shielding layer are all coated with sealant.

[0006] Preferably, the inner wall of the metal shell is fixedly connected to a support base, and the support base is symmetrically distributed about the bisector of the metal shell.

[0007] Preferably, the support base is located on one side of the first shielding layer, and the first shielding layer and the support base are fixedly connected by screws.

[0008] Preferably, there are gaps between the metal shell and the upper and lower ends of the first shielding layer, and protective components are provided in the gaps.

[0009] Preferably, the protective component includes a rubber column fixed in the gap between the metal shell and the first shielding layer.

[0010] Preferably, the rubber column is a hollow structure, and a sleeve, a support spring, and a connecting rod are fixedly connected inside the rubber column.

[0011] Preferably, a connecting rod is inserted into the bottom of the sleeve, and a support spring is sleeved on the outer wall of the connecting rod and the sleeve, forming a telescopic structure with the connecting rod and the sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) This device can provide a wrap-around shield for the touch screen, thereby improving the shielding effect and ensuring the service life of the touch screen.

[0014] (2) This device exposes only the touch surface of the touch screen body by wrapping the outer wall of the touch screen body with a first shielding layer, a second shielding layer and a third shielding layer. This not only ensures the use of the touch screen body but also improves the shielding effect, avoiding the phenomenon of the touch screen body edge touch failure caused by the weakening of the shielding effect at the gap between the touch screen body and the metal shell.

[0015] (3) By setting protective components in the gap between the touch screen body and the inner side of the metal shell, the device can protect the first shielding layer, the second shielding layer and the third shielding layer while ensuring support and preventing deformation through rubber pillars, sleeves and support springs, thus avoiding damage to the first shielding layer, the second shielding layer and the third shielding layer caused by the metal shell falling and affecting the shielding effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a multi-layer metal foil shielding layer anti-electromagnetic interference touch screen structure according to the present invention;

[0017] Figure 2 This utility model relates to a multi-layer metal foil shielding layer anti-electromagnetic interference touchscreen. Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a side view of the connection between the first shielding layer and the sealant in a multi-layer metal foil shielding electromagnetic interference anti-touch screen according to this utility model.

[0019] Figure 4 This is a cross-sectional view of a rubber column of a multi-layer metal foil shielding touch screen for electromagnetic interference protection according to this utility model.

[0020] In the diagram: 1. Touch screen body; 2. Metal casing; 3. Protective components; 31. Rubber pillar; 32. Sleeve; 33. Support spring; 34. Connecting rod; 4. First shielding layer; 5. Support base; 6. Sealant; 7. Second shielding layer; 8. Third shielding layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This utility model provides a technical solution: a multi-layer metal foil shielded electromagnetic interference-resistant touch screen, including a touch screen body 1, a metal shell 2 on the outside of the touch screen body 1, and a support base 5 fixedly connected to the inner wall of the metal shell 2. The support base 5 is symmetrically distributed vertically about the bisector of the metal shell 2. The support base 5 is located on one side of the first shielding layer 4. The first shielding layer 4 and the support base 5 are fixedly connected by screws. This structure, through the support base 5, can ensure the stable installation of the first shielding layer 4, the second shielding layer 7, and the third shielding layer 8, ensure the connection effect of the first shielding layer 4, the second shielding layer 7, and the third shielding layer 8 with the touch screen body 1, and improve the shielding effect. The upper and lower ends of the metal shell 2 and the first shielding layer 4 are connected. There are gaps between the metal shell 2 and the first shielding layer 4, and protective components 3 are installed in these gaps. The metal shell 2 of this structure is the protective shell of the touch screen body 1 in the prior art, which is prior art, so it will not be described in detail here. The protective components 3 include rubber pillars 31 fixed in the gap between the metal shell 2 and the first shielding layer 4. This structure facilitates the installation of protective components 3 to protect the first shielding layer 4, the second shielding layer 7, and the third shielding layer 8. The rubber pillars 31 are hollow structures and are fixed between the metal shell 2 and the first shielding layer 4 by adhesive. The rubber pillars 31 have a sleeve 32, a support spring 33, and a connecting rod 34 fixedly connected inside. This structure allows the metal shell 2 and the first shielding layer 4 to be connected by the rubber pillars 31. The sleeve 32 has a certain degree of elasticity, which protects the first shielding layer 4. A connecting rod 34 is inserted into the bottom of the sleeve 32. A support spring 33 is sleeved on the outer wall of the connecting rod 34 and the sleeve 32. The connecting rod 34 and the sleeve 32 form a telescopic structure. The support spring 33 of this structure can support the sleeve 32, so that the sleeve 32 and the connecting rod 34 can remain in a telescopic state, so as to buffer the impact when the metal shell 2 is impacted and protect the first shielding layer 4, the second shielding layer 7 and the third shielding layer 8. The outer wall of the touch screen body 1 is wrapped with the third shielding layer 8. The outer wall of the third shielding layer 8 is provided with the second shielding layer 7. The outer wall of the second shielding layer 7 is provided with the first shielding layer 4. The material of the first shielding layer 4 is copper foil. The outer cover, the second shielding layer 7 is made of permalloy sandwich layer, and the third shielding layer 8 is made of aluminum foil mesh inner layer. The upper and lower ends of the first shielding layer 4, the second shielding layer 7 and the third shielding layer 8 are all right-angle hooks, which can achieve a semi-enclosed state for the touch screen body 1. The gaps between the metal shell 2 and the touch screen body 1 and the first shielding layer 4 are all coated with sealant 6. The sealant 6 is made of magnetic shielding adhesive. The sealant 6 can ensure the seal between the metal shell 2 and the touch screen body 1 and the first shielding layer 4 while providing magnetic shielding for the gaps. During the use of this device, the metal shell 2 needs to install PCB boards and other accessories. This part is existing technology and will not be described in detail here.

[0023] Working principle: When using this multi-layer metal foil shielding touch screen to resist electromagnetic interference, firstly, glue is applied to both ends of the rubber pillar 31, so that one end of the rubber pillar 31 is attached and fixed to the metal shell 2. Then, the first shielding layer 4, the second shielding layer 7, and the third shielding layer 8 are fixed to the support base 5 with screws, and the other end of the rubber pillar 31 is attached to the outer wall of the first shielding layer 4. Subsequently, the touch screen body 1 is fixed to the inner side of the third shielding layer 8, and the gap between the metal shell 2, the touch screen body 1, and the first shielding layer 4 is sealed with sealant 6. If the metal shell 2 is impacted during the use of this device, the rubber pillar 31 on the inner side of the metal shell 2 can provide support and buffer, thereby reducing damage to the first shielding layer 4, the second shielding layer 7, and the third shielding layer 8, and preventing damage to the first shielding layer 4, the second shielding layer 7, and the third shielding layer 8 from affecting the shielding effect.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-layer metal foil shielding layer anti-electromagnetic interference touch screen, comprising a touch screen body (1), the outer part of the touch screen body (1) is provided with a metal shell (2), characterized in that: The outer wall of the touch screen body (1) is wrapped with a third shielding layer (8), the outer wall of the third shielding layer (8) is provided with a second shielding layer (7), the outer wall of the second shielding layer (7) is provided with a first shielding layer (4), the upper and lower ends of the first shielding layer (4), the second shielding layer (7) and the third shielding layer (8) are all right-angle hooks, and the gap between the metal shell (2) and the touch screen body (1) and the first shielding layer (4) is coated with sealant (6).

2. The multi-layer metal foil shielding layer anti-electromagnetic interference touch screen according to claim 1, characterized in that: The inner wall of the metal shell (2) is fixedly connected to a support (5), and the support (5) is symmetrically distributed about the bisector of the metal shell (2).

3. The multi-layer metal foil shielding layer anti-electromagnetic interference touch screen according to claim 2, characterized in that: The support base (5) is located on one side of the first shielding layer (4), and the first shielding layer (4) and the support base (5) are fixedly connected by screws.

4. The multi-layer metal foil shielding layer anti-electromagnetic interference touch screen according to claim 1, characterized in that: There are gaps between the upper and lower ends of the metal shell (2) and the first shielding layer (4), and a protective component (3) is provided in the gap.

5. The multi-layer metal foil shielding layer electromagnetic interference resistant touch screen of claim 4, wherein: The protective component (3) includes a rubber column (31) fixed in the gap between the metal shell (2) and the first shielding layer (4).

6. The multi-layer metal foil shielding layer electromagnetic interference resistant touch screen of claim 5, wherein: The rubber column (31) is a hollow structure, and a sleeve (32), a support spring (33) and a connecting rod (34) are fixedly connected inside the rubber column (31).

7. The multi-layer metal foil shielding layer electromagnetic interference resistant touch screen of claim 6, wherein: A connecting rod (34) is inserted into the bottom of the sleeve (32), and a support spring (33) is sleeved on the outer wall of the connecting rod (34) and the sleeve (32). The connecting rod (34) and the sleeve (32) form a telescopic structure.

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