Flexible safety circuit of composite NFC antenna

Abstract

The utility model relates to a flexible safety circuit of a composite NFC antenna, which comprises a plastic body, a binder layer, an NFC coil, a sheet base material and a safety circuit composite layer, the safety circuit composite layer comprises an attached silver paste safety circuit, an insulating ink layer covering the silver paste safety circuit and a contact attached on the surface of the insulating ink layer, and the contact is electrically connected with the silver paste safety circuit. The plastic body and other parts are formed through IMD injection molding, and the adhesive layer is an in-mold injection molding adhesive. According to the utility model, the plastic body and other parts are subjected to IMD injection molding, so that the NFC coil and the safety circuit are integrally formed on the plastic body to form a whole part, and the plastic body can be a shell or an internal plastic part of the POS machine, so that the POS machine is more convenient to assemble, the production cost is reduced, the space of the POS machine is effectively compressed, and the POS machine is convenient to light and thin; meanwhile, when the plastic body is damaged, the safety circuit can send out an alarm signal, and the safety level is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to a safety line field, especially in a kind of flexible safety line of composite NFC antenna. BACKGROUND

[0002] The safety protection Mesh of POS machine on current market is all single body, whether cover IC card seat or paste in the position of digital keyboard to protect, all exist to prevent hacker attack.And NFC non-inductive antenna is indispensable as a part of POS machine, and also single existence individuality.The above two components are commonly used on POS machine, and also exist as two components respectively.The above two components exist as single body, so that the overall thickness of POS machine is thick, not conducive to the light and thin of POS machine, and the production cost rises simultaneously with multiple assembly procedures. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model aims at providing a kind of flexible safety line of composite NFC antenna.

[0004] The utility model discloses a kind of flexible safety line of composite NFC antenna, including plastic body, adhesive layer attached in the bottom of the plastic body, NFC coil being clamped between the adhesive layer and the plastic body, sheet base attached in the bottom of the adhesive layer, safety line composite layer attached in the bottom of the base, the safety line composite layer includes attached silver paste safety line, insulating ink layer covering the silver paste safety line, contact attached on the surface of the insulating ink layer, the contact is electrically connected with the silver paste safety line, the plastic body and the remaining components are formed by IMD injection molding, the adhesive layer is in-mold adhesive.

[0005] As a further improvement of the present design, the safety line composite layer is provided with at least two layers, and the safety line composite layers are arranged in a stacked manner.

[0006] As a further improvement of the present design, the silver paste safety lines in adjacent safety line composite layers are electrically connected by silver paste columns.

[0007] As a further improvement of the present design, the silver paste safety line in the top safety line composite layer is attached to the bottom of the base, and the contact is attached to the bottom of the insulating ink layer in the bottom safety line composite layer.

[0008] As a further improvement of the present design, the contact is a printed silver paste contact, and the silver paste contact is electrically connected with the silver paste safety line by a silver paste column.

[0009] As a further improvement of the present design, the contact bottom is covered with conductive carbon paste.

[0010] As a further improvement of the present design, a photo oil layer is sandwiched between the substrate and the adhesive layer.

[0011] As a further improvement of the present design, the photo oil layer and the security line composite layer are both printed.

[0012] The utility model discloses the beneficial effect is: the utility model discloses through the rest of the parts through IMD injection moulding of plastic body makes NFC coil and security line integrated moulding on plastic body, forms a part whole, wherein plastic body can be the shell or internal plastic part of POS machine, when POS machine assembly is more convenient, reduces production cost, and effectively compression POS machine's space simultaneously, the light and thin of POS machine are convenient for, simultaneously when destroying plastic body, security line can send alarm signal, and security level is higher. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model is further explained below in combination with the drawings and examples.

[0014] Figure 1 It is the whole cross section structure schematic diagram of the utility model.

[0015] Figure 2 It is the bottom view schematic diagram of the utility model not setting plastic body.

[0016] Figure 3 It is the top view schematic diagram of the utility model not setting plastic body.

[0017] In the figure 1. plastic body, 2. NFC coil, 3. adhesive, 4. photo oil layer, 5. substrate, 6. security line composite layer, 60. silver paste security line, 61. insulating ink layer, 7. contact, 8. conductive carbon paste, 9. silver paste column. DETAILED DESCRIPTION

[0018] The utility model will be explained in detail below in combination with the drawings and specific examples, and the illustrative example and the explanation in the utility model are only used to explain the utility model, but do not as the limitation of the utility model.

[0019] Embodiment: A flexible security thread with a composite NFC antenna, comprising a plastic body 1, an adhesive layer 3 attached to the bottom of the plastic body 1, an NFC coil 2 sandwiched between the adhesive layer 3 and the plastic body 1, a sheet-shaped substrate 5 attached to the bottom of the adhesive layer 3, a security thread composite layer 6 attached to the bottom of the substrate 5, the security thread composite layer 6 comprising an attached silver paste security thread 60, an insulating ink layer 61 covering the silver paste security thread 60, and a contact 7 attached to the surface of the insulating ink layer 61, the contact 7 being electrically connected to the silver paste security thread 60, the plastic body 1 and the rest of the components being formed by IMD injection molding, and the adhesive layer 3 being an in-mold injection adhesive 3. A specific in-mold injection adhesive 3 can use commercially available B-2 adhesive.

[0020] The NFC coil 2 and the security thread are integrally formed on the plastic body 1 by IMD injection molding of the plastic body 1 and the rest of the components, forming a one-piece whole, wherein the plastic body 1 can be the outer shell or internal plastic part of a POS machine, making assembly of the POS machine more convenient, reducing production costs, and effectively compressing the space of the POS machine, facilitating the lightness and thinness of the POS machine; at the same time, when the plastic body 1 is damaged, the security thread can send an alarm signal, and the security level is higher.

[0021] In order to further improve the density of the security thread and improve the security level, the security thread composite layer 6 is provided with at least two layers, the security thread composite layer 6 is arranged in a stacked manner, and the silver paste security thread 60 is arranged in a grid shape in plan view.

[0022] In order to facilitate the conduction and production of the circuit, the silver paste security threads 60 in adjacent security thread composite layers 6 are electrically connected through silver paste columns 9.

[0023] In order to facilitate the arrangement of the contact 7 on the side of the security thread composite layer 6 away from the substrate 5, the silver paste security thread 60 in the top security thread composite layer 6 is attached to the bottom of the substrate 5, and the contact 7 is attached to the bottom of the insulating ink layer 61 in the bottom security thread composite layer 6.

[0024] In order to facilitate the production of the contact 7 and the good conduction of the contact 7 and the silver paste security thread 60, the contact 7 is a printed silver paste contact 7, and the silver paste contact 7 is electrically connected to the silver paste security thread 60 through the silver paste column 9.

[0025] In order to prevent the contact 7 from oxidizing and failing, the bottom of the contact 7 is covered with conductive carbon paste 8.

[0026] In order to reduce the deformation of the substrate 5 caused by the impact of the plastic on the substrate 5 during IMD molding, a varnish layer 4 is sandwiched between the substrate 5 and the adhesive layer 3, and the varnish layer 4 uses high-temperature-resistant varnish.

[0027] In order to facilitate production, the gloss oil layer 4 and the security line composite layer 6 are printed.

[0028] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A flexible security thread of a composite NFC antenna, characterized in that, The plastic body, the adhesive layer attached to the bottom of the plastic body, the NFC coil sandwiched between the adhesive layer and the plastic body, the sheet-shaped substrate attached to the bottom of the adhesive layer, the safety line composite layer attached to the bottom of the substrate, the safety line composite layer comprising the attached silver paste safety line, the insulating ink layer covering the silver paste safety line, the contact attached to the surface of the insulating ink layer, the contact being electrically connected with the silver paste safety line, and the plastic body and the remaining parts being formed by IMD injection molding.

2. A flexible security thread with a composite NFC antenna according to claim 1, characterized in that, The safety line composite layer is provided with at least two layers, and the safety line composite layers are arranged in a stacked manner.

3. A flexible security thread incorporating an NFC antenna according to claim 2, characterised in that, The silver paste safety lines in adjacent safety line composite layers are electrically connected through silver paste columns.

4. A flexible security thread incorporating an NFC antenna according to claim 3, characterised in that, The silver paste safety lines in the top safety line composite layer are attached to the bottom of the substrate, and the insulating ink layer in the bottom safety line composite layer is attached with a contact at the bottom.

5. A flexible security thread incorporating an NFC antenna according to claim 4, characterised in that, The contact is a printed silver paste contact, and the silver paste contact is electrically connected with the silver paste safety line through a silver paste column.

6. A flexible security thread incorporating an NFC antenna according to claim 5, characterised in that, The bottom of the contact is covered with conductive carbon paste.

7. The flexible security thread of claim 1, wherein the NFC antenna is a composite NFC antenna. A varnish layer is sandwiched between the substrate and the adhesive layer.

8. A flexible security thread incorporating an NFC antenna according to claim 7, characterised in that, The varnish layer and the safety line composite layer are printed.

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