PROTECTION HOUSING FOR RFID TAG

• US 20140224884A1
• Filed: 06/01/2012
• Published: 08/14/2014
• Est. Priority Date: 06/02/2011
• Status: Active Grant

• Current Assignee: Xerafy Singapore Pte. Ltd.
• Original Assignee: Shanghai Yoachuan Information Technology Company Limited, Xerafy
• Inventors: LIU, Zhijia
• Granted Patent: US 8,991,715 B2
• Time in Patent Office: Days
• US Class Current: 235/492
• CPC Class Codes: G06K 19/077 Constructional details, e.g. mounting of circuits in the carrier
• CPC Class Codes: G06K 19/07728 the record carrier comprising means for protection against impact or bending, e.g. protective shells or stress-absorbing layers around the integrated circuit
• CPC Class Codes: G06K 19/0773 the record carrier comprising means to protect itself against external heat sources
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card

Abstract

A protection housing for an RFID tag, including a first housing and a second housing and an encapsulation structure for encapsulating an RFID tag into the placement space formed by the first housing and the second housing, the first housing having a first extension part including at least one air conductive groove, an elastic body, and at least one first air conductive through hole. The air conductive groove has a cavity and an opening; the elastic body matches the shape of the air conductive groove and is inserted into the cavity of each air conductive groove and forms an elastic snap-fitted part therewith; and the first air conductive through hole is placed on a sidewall where the placement space is adjacent to the elastic snap-fitted part, with one end thereof being in communication with the placement space and the other end being in contact with the elastic body. When the air pressure in the placement space is higher than atmospheric pressure and reaches a preset threshold, the high pressure air presses the elastic body that is inserted in the air conductive groove from the first air conductive through hole to force the elastic snap-fitted part of the elastic body to form an air conductive duct after being pressed by the air pressure, thus the high pressure air is discharged out via the air conductive duct and the opening of the air conductive groove. The present invention enables the encapsulation product of the RFID tag to be resistant to high temperature and to meet the IP68 protection standard.

Claims

1. A protection housing for an RFID tag, including a first housing, a second housing and an encapsulation structure for encapsulating an RFID tag into the placement space formed by the first housing and the second housing;

wherein the first housing has a first extension part that extends outwards;

and the protection housing further includes;

at least one air conductive groove, which is provided in the first extension part and includes a cavity and an opening;

an elastic body, which matches the shape of the air conductive groove and is inserted into the cavity of each air conductive groove and forms an elastic snap-fitted part with the cavity of the air conductive groove;

and at least one first air conductive through hole, which is placed on a sidewall where the placement space is adjacent to the elastic snap-fitted part, with one end thereof being in communication with the placement space and the other end being in contact with the elastic body;

wherein, when the air pressure in the placement space is higher than atmospheric pressure and reaches a preset threshold, the high pressure air presses the elastic body that is inserted in the air conductive groove from the first air conductive through hole to force the elastic snap-fitted part of the elastic body to form an air conductive duct after being pressed by the air pressure, thus the high pressure air is discharged out via the air conductive duct and the opening of the air conductive groove.

2. The protection housing for an RFID tag according to claim 1, wherein the second housing has a second extension part that extends outwards;

and the second extension part includes a cavity used to seal the air conductive groove opening and at least one second air conductive through hole located on the cavity;

the cavity is located on and completely covered hermetically on the air conductive groove, and the second air conductive through hole is located over the elastic body;

Wherein, when the air pressure in the placement space is higher than atmospheric pressure and reaches a preset threshold, the high pressure air is discharged out via the first air conductive through hole, the air conductive duct, the opening of the air conductive groove, and the second air conductive through hole.

3. The protection housing for an RFID tag according to claim 2, wherein the second air conductive through hole is a circular through hole.

4. The protection housing for an RFID tag according to claim 2, wherein the opening area of the second air conductive through hole corresponding to the elastic body is larger than opening area of the other end of the second air conductive through hole.

5. The protection housing for an RFID tag according to claim 4, wherein the second air conductive through hole is a conical through hole.

6. The protection housing for an RFID tag according to claim 1, wherein the first air conductive through hole is located at the central area of the sidewall.

7. The protection housing for an RFID tag according to claim 1, wherein the shape of the air conductive groove section is rectangle, triangle or trapezoid.

8. The protection housing for an RFID tag according to claim 1, wherein the material of the elastic body is silicon or polyamide.

9. The protection housing for an RFID tag according to claim 1, wherein the air conductive groove is an integral sealed waterproof groove around the RFID tag, with multiple first air conductive through holes uniformly distributed on the sidewall.

10. The protection housing for an RFID tag according to claim 2, wherein the air conductive groove is an integral sealed waterproof groove around the RFID tag, the cavity of the second extension part is annular and located on and completely covered hermetically on the air conductive groove;

and multiple second air conductive through holes are uniformly distributed in the annular cavity.