RFID anti-metal tag easy to attach conformally

Abstract

The utility model discloses an RFID (Radio Frequency Identification Device) anti-metal tag easy to attach conformally. Comprising a surface layer, a UHF tag, foam and a bottom layer, the surface layer, the UHF tag and the bottom layer are sequentially connected from top to bottom, the UHF tag is in a folded U shape, a U-shaped opening of the UHF tag faces one side, the foam is connected in the U-shaped opening of the UHF tag, and a slot is formed in the UHF tag. In the working process, the phenomenon that wrinkles appear after being attached to the surface of a curved-surface object is effectively improved, and using of customers is more convenient.

Description

Technical Field

[0001] The utility model relates to an RFID tag, in particular to an RFID metal-resistant tag suitable for conformal attachment to curved objects. Background Art

[0002] RFID systems have been widely used in fields such as agricultural management, inventory tracking, food retail, anti-counterfeiting identification, etc. due to their longer identification range, faster reading speed, and higher storage capacity. As more and more

[0003] industry requirements are put forward, RFID tags, especially tags for special applications, need to be designed.

[0004] When RFID tags are used for asset management of metal assets (such as computers, switches, etc.), warehouse management (such as metal goods shelves, steel cylinders of pressure vessels, etc.), and logistics tracking (such as large containers, iron sheet cabinets, and electronic products, etc.), since the distance between the tag antenna and the metal object is very close, the impedance performance and radiation efficiency of the antenna will be significantly reduced. Therefore, metal-resistant tags have emerged. Such tags can be attached to the surface of metal objects to track and manage items, and when identifying, the goods or logistics information is read through a reader. However, in actual applications, the surface shape of metal objects may be curved and irregular, and the dielectric layer of early metal-resistant tags is relatively thick, and the dielectric board is relatively hard and cannot fit well on the metal surface.

[0005] Currently, most of the mainstream flexible metal-resistant tags applicable to the surface of curved objects on the market mostly use flexible substrates that can be bent, causing the tag antenna to bend and deform into a certain shape, thereby achieving low-profile conformal attachment to the surface of the object to be attached. Commonly used dielectric materials for flexible tags include polymer dielectric materials such as PET and PVC, and synthetic laminated materials such as EVA, PE foam, and PP synthetic paper. Although foam materials are generally relatively soft, the foam materials are mostly located in the middle of the metal-resistant tag structure, and the polymer dielectric materials are mostly in contact with the attached object. At the same time, limited by the performance design of the metal-resistant tag, the overall thickness of the tag is greater than 1.5 cm. After the tag is bent, due to the lack of ductility on the surface of the polymer material under the pull of the foam, wrinkles will still appear and it cannot conform well to the curved object to be attached. Summary of the Utility Model

[0006] The utility model aims at the above problems and provides an RFID metal-resistant tag that is easy to conformally attach, with a simple structure, convenient and reliable.

[0007] The technical solution of the utility model is: an RFID metal-resistant tag that is easy to conformally attach, including a surface layer, a UHF tag, a foam, and a bottom layer.

[0008] The surface layer, the UHF tag and the bottom layer are connected in sequence from top to bottom.

[0009] The UHF tag is in a folded U shape, and the U-shaped opening of the UHF tag is arranged towards one side.

[0010] The foam is connected inside the U-shaped opening of the UHF tag, and a slit is provided on the UHF tag.

[0011] The UHF tag includes an RFID chip, a metal antenna and a substrate connected in sequence, and the RFID chip faces the foam.

[0012] The metal antenna includes a radiation patch, a folding part and a metal floor arranged in sequence. The RFID chip is connected to the radiation patch, and the slit is provided on the metal floor.

[0013] An opening slit corresponding to the slit on the metal floor is provided on the substrate.

[0014] The slit includes U-shaped slits symmetrically arranged at both ends of the metal floor.

[0015] The slit includes a rectangular slit penetrating the metal floor.

[0016] The width of the U-shaped slit is 2.5 mm, and the depth is 10 mm.

[0017] The rectangular slit is 13 mm away from the edge of the metal floor, and the width is 2.5 mm.

[0018] Two through holes are provided on the radiation patch, and a notch for connecting the chip is provided between the two through holes.

[0019] In the work of the present utility model, the UHF tag is folded, and then the foam is placed inside the U-shaped opening of the UHF tag. At the same time, a slit is provided on the UHF tag, so that the wrinkling problem that appears after the tag is attached to the surface of a curved object can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the metal antenna in the UHF tag;

[0022] In the figure: 1 - surface layer;

[0023] 2 - UHF tag;

[0024] 21 - RFID chip;

[0025] 22 - metal antenna; 221 - radiation patch; 2211 - through hole; 2212 - notch; 222 - folding part; 223 - metal floor;

[0026] 23 - Substrate;

[0027] 3 - Foam; 4 - Rectangular seam; 5 - U - shaped seam; 6 - Bottom layer. Detailed implementation manners

[0028] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] As Figure 1-2 shown, the present utility model provides an RFID anti - metal tag that is easy to conformally attach, including a surface layer 1, a UHF tag 2, a foam 3, and a bottom layer 6. The surface layer, the UHF tag, and the bottom layer are connected in sequence from top to bottom.

[0032] The UHF tag 2 is in a folded U - shape, and the U - shaped opening of the UHF tag faces one side.

[0033] The foam 3 is connected inside the U - shaped opening of the UHF tag 2, and there is a slit on the UHF tag.

[0034] In the operation of the present utility model, the UHF tag is folded, and then the foam is placed inside the U - shaped opening of the UHF tag. At the same time, there is a slit on the UHF tag. In this way, the problem of wrinkles that occur after the tag is attached to the surface of a curved object can be improved.

[0035] Without changing the thickness of the label, the present utility model improves the wrinkling phenomenon by means of slitting. The conformal property in the present utility model means reliable adhesion.

[0036] The UHF label 2 includes an RFID chip 21, a metal antenna 22 and a substrate 23, and the RFID chip 21 is connected to the metal antenna 22 through a conductive adhesive.

[0037] The metal antenna 22 is divided into three parts: a radiation patch 221, a folding part 222 and a metal floor 223. The size of the metal floor part is larger than that of the radiation patch part. During application, the radiation patch and the metal floor are folded along the folding part and then used.

[0038] The foam 3 is connected to the folded UHF label 2 through glue.

[0039] Two asymmetric through-holes 2211 are designed on the radiation patch 221, and a notch 2212 for connecting the chip is provided between the two through-holes. When the label works, a certain inductance value is generated and matched with the RFID chip to the required frequency point, and energy is radiated outward.

[0040] The slits include U-shaped slits 5 symmetrically arranged at both ends of the metal floor and a rectangular slit 4 penetrating the metal floor. By setting the slits on the metal floor, the wrinkling problem is improved.

[0041] Five U-shaped slits 5 are designed on the metal floor 223 with both ends symmetrically arranged side by side. The width of the U-shaped slit is 2.5 mm and the depth is 10 mm.

[0042] A rectangular slit 4 penetrating the metal floor is designed on the metal floor. The rectangular slit is 13 mm away from the edge of the metal floor and the width is 2.5 mm.

[0043] The rectangular slit: is more suitable for curved surface attachment. Actually, the more slits there are, the better the effect of curved surface attachment will be.

[0044] At the same time, the design of the rectangular slit can also ensure better consistency when the label is applied. That is, if 10 manual samples are made at the same time, the performance curves tested by the instrument are basically the same.

[0045] Open slits corresponding to the slits on the metal floor are provided on the substrate. In this way, when attached to a curved surface, under the pulling of the foam, the wrinkling problem of the metal antenna and the substrate is improved.

[0046] The metal floor 223 and the substrate 23 are both cut out with the required U-shaped slits and rectangular slits by a die-cutting knife. In order to increase the surface tension of the label during curved attachment and make it easier to attach to a curved surface.

[0047] The surface layer 1 and the bottom layer 6 are both connected to the substrate 223 through glue.

[0048] The material of the base material 23 is generally a polymer dielectric material such as PET or PVC.

[0049] The materials of the surface layer 1 and the bottom layer 6 are generally PP synthetic paper.

[0050] Regarding the content disclosed in this case, the following points need to be explained:

[0051] (1) The attached drawings of the embodiments disclosed in this case only relate to the structures involved in the embodiments disclosed in this case. For other structures, reference can be made to the usual designs;

[0052] (2) Without conflict, the embodiments disclosed in this case and the features in the embodiments can be combined with each other to obtain new embodiments;

[0053] The above is only the specific implementation manners disclosed in this case, but the protection scope of this disclosure is not limited thereto. The protection scope disclosed in this case shall be subject to the protection scope of the claims.

Claims

1. An RFID anti-metal tag that is easily conformally attached, characterized in that, It includes a surface layer, a UHF tag, a foam, and a bottom layer. The surface layer, the UHF tag, and the bottom layer are connected in sequence from top to bottom. The UHF tag is in a folded U shape, and the U-shaped opening of the UHF tag faces one side. The foam is connected inside the U-shaped opening of the UHF tag, and a slit is provided on the UHF tag.

2. The easily conformable RFID anti-metal tag according to claim 1, wherein the UHF tag includes an RFID chip, a metal antenna, and a substrate connected in sequence, and the RFID chip faces the foam. The metal antenna includes a radiation patch, a folding part, and a metal floor arranged in sequence. The RFID chip is connected to the radiation patch, and the slit is provided on the metal floor.

3. The RFID anti-metal label with easy conformal attachment according to claim 2, characterized in that, An opening slit corresponding to the slit on the metal floor is provided on the substrate.

4. The RFID anti-metal tag with easy conformal attachment according to claim 2 or 3, characterized in that The slit includes U-shaped slits symmetrically arranged at both ends of the metal floor.

5. The RFID anti-metal label capable of being easily conformally attached according to claim 4, wherein The slit includes a rectangular slit penetrating the metal floor.

6. The RFID anti-metal label capable of easy conformal attachment according to claim 4, wherein, The width of the U-shaped slit is 2.5 mm, and the depth is 10 mm.

7. An RFID anti-metal label that is easy to conformally adhere according to claim 5, wherein, The rectangular slit is 13 mm away from the edge of the metal floor, and the width is 2.5 mm.

8. The RFID anti-metal label capable of being easily conformally attached according to claim 2, wherein Two through holes are provided on the radiation patch, and a notch for connecting the chip is provided between the two through holes.

Images