JP2010262538A - Rfid tag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an RFID tag deformed into a state to thin a thickness when carrying and storing an object to be attached, and restored to a state securing a sufficient space with respect to a metal face when transceived. <P>SOLUTION: The RFID tag includes an inlet holding body 3 including an attaching plate part 4 attached to an outer face 9 of the metal object 7 to be attached, a nonmetallic carrying plate part 5 for carrying an RFID inlet 2, and at least one pair of restoration spacer plate parts 6 for holding the carrying plate part 5 separatedly from the attaching plate part 4 with a prescribed space, and for generating an elastic force when compression-deformed. The carrying plate part 5 is thereby brought into an evacuated state getting near to the attaching plate part 4, when the restoration spacer plate parts 6 are compression-deformed by an external force from a surface side of the carrying plate part 5, and the carrying plate part 5 is restored to a stationary state separated with the prescribed space from the attaching plate part 4, by the elastic force generated in the compression-deformed restoration spacer plate parts 6, when the external force is removed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an RFID tag used by being attached to a metal attachment.

  An RFID tag such as a non-contact type IC tag used in an RFID (Radio Frequency Identification) system includes an IC chip and an antenna, and uses an electromagnetic wave between an input / output device (reader / writer) and is non-contact type. It has a function that can send and receive signals such as commands and data. When this RFID tag enters an effective electromagnetic wave zone radiated by the antenna on the input / output device side, the RFID tag antenna generates an induced electromotive force, which becomes an operating state by the electric power, and commands, data, etc. from the input / output device. In response to the command signal, the received data is stored in a memory capable of reading and writing data included in the IC chip, or the data stored in the memory is transmitted to the input / output device. In recent years, it has been introduced in a wide range of fields such as transportation / leisure field, logistics field, security field, factory production field, environmental field, etc.

  When such an RFID tag is directly attached to a metal attachment, it is known that the transmission / reception function is extremely lowered or transmission / reception is disabled. Therefore, conventionally, a non-metallic spacer made of synthetic resin or rubber is disposed on the back surface of the RFID tag, and the RFID tag is attached to a metal attachment object via the spacer, thereby the RFID tag antenna and the metal. A reduction in transmission / reception function is suppressed by separating the surface (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2009-9205 ("0004", Fig. 5)

  By the way, when using a spacer as described above, it is necessary to increase the thickness of the spacer and secure a sufficient space between the antenna of the RFID tag and the metal surface in order to suppress the deterioration of the transmission / reception function. If the thickness of the spacer is increased, the size of the entire RFID tag including the spacer increases, and this protrudes from the outer surface of the attached object, which causes a problem that the attached object becomes bulky during transportation and storage. .

  The present invention has been made to solve such a problem, and is deformed so that the thickness is reduced during transportation and storage of the attached object, and a sufficient space is ensured between the metal surface during transmission and reception. An object of the present invention is to provide an RFID tag that can be restored to a state.

  The present invention includes an IC chip having a memory for storing data in a rewritable manner and an antenna connected to the IC chip, and an RFID having a function of transmitting and receiving the data in a contactless manner with a predetermined input / output device. An inlet, a mounting plate portion that is attached to the outer surface of the metal attachment object, a non-metallic support plate portion that supports the RFID inlet, and the support plate portion that is spaced apart from the mounting plate portion at a predetermined interval and held. And at least a pair of restoring spacer plate portions that generate elastic force when compressively deformed. When the restoring spacer plate portion is compressed and deformed by an external force from the surface side of the carrying plate portion, the carrying plate portion comes close to the mounting plate portion. When the external force is removed when the retracted state is removed, the support plate part is separated from the mounting plate part at a predetermined interval by the elastic force generated in the compressed and deformed restoration spacer plate part and returns to the steady state. That an RFID tag characterized in that it comprises an inlet support.

  Here, the RFID inlet is configured by supporting an IC chip and an antenna on a synthetic resin sheet, or by supporting an IC chip and an antenna on a synthetic resin sheet and covering them with a synthetic resin outer package. Can be configured.

  In the RFID tag, a configuration is proposed in which the restoration spacer plate portion is made of an elastic synthetic resin or synthetic rubber.

  In addition, a configuration is proposed that includes a non-metallic protective cover body that is elastically deformable and covers the side of the inlet holder.

  In addition, a configuration is proposed that includes auxiliary biasing means that includes a spring that biases the support plate portion in a direction away from the mounting plate portion and returns to the steady state.

  Furthermore, the structure provided with the stopper which hold | maintains a support plate part in a retracted state is proposed.

  As described above, the present invention includes an IC chip having a memory for storing data in a rewritable manner and an antenna connected to the IC chip, and transmits / receives the data to / from a predetermined input / output device in a contactless manner. RFID inlet having a function, a mounting plate portion to be attached to the outer surface of a metal attachment object, a non-metallic support plate portion for supporting the RFID inlet, and the support plate portion at a predetermined distance from the mounting plate portion At least a pair of restoring spacer plates that generate elastic force when compressed and deformed. When the restoring spacer plates are compressed and deformed by an external force from the surface side of the carrying plate, the carrier plate is attached. When the retracted state close to the plate portion is removed and the external force is removed, the support plate portion is separated from the mounting plate portion at a predetermined interval by the elastic force generated in the compressed and deformed restoration spacer plate portion. Since the RFID tag is provided with an inlet holder that returns to a steady state, a non-metallic carrier that carries the RFID inlet by attaching the mounting plate portion of the inlet holder to the outer surface of the metal attachment object The plate portion can be held at a predetermined interval from the outer surface of the attachment. In such a steady state that the holding plate portion is held at a predetermined interval from the outer surface of the metal attachment object, a predetermined interval is secured between the RFID inlet and the metal surface, so Therefore, data transmission / reception by the RFID inlet can be performed without any trouble. On the other hand, during transportation or storage of the attachment, the outer surface of the attachment to which the RFID tag is attached is connected to the outer surface of another attachment, the surface of the truck bed or the wall of the building via the RFID tag. When pressed against, the restoring spacer plate portion is compressed and deformed by an external force applied from the front surface side of the carrying plate portion, and the carrying plate portion enters a retracted state close to the mounting plate portion. As a result, the thickness of the RFID tag is reduced and the protrusion width from the outer surface of the attached object is reduced, so that the bulkiness of the attached object due to the thickness of the RFID tag can be eliminated. Further, when the external force is removed, the carrying plate portion can be automatically returned to the steady state in which it is separated from the mounting plate portion at a predetermined interval by the elastic force generated in the compression-deformed restoring spacer plate portion.

  In the RFID tag, when the restoring spacer plate portion is made of a synthetic resin or synthetic rubber having elasticity, the restoring spacer plate portion has a good compressive deformation action and good elastic force due to the compressive deformation. A generating action can be produced.

  Further, in the configuration including the non-metallic protective cover body that can be elastically deformed to cover the side portion of the inlet holder, the protective cover body is affected by the state change of the inlet holder that changes between the retracted state and the steady state. The protective cover body can prevent the impact applied from the side to the inlet holder and the intrusion of foreign matter into the inlet holder, and the support plate. The RFID inlet carried on the part can be protected.

  Further, in the configuration provided with auxiliary urging means comprising a spring for urging the carrying plate part in the direction of separating from the mounting plate part and returning to the steady state, the carrying plate part is formed by the auxiliary urging means. Can be quickly and reliably returned from the retracted state to the steady state.

  Furthermore, in the configuration having a stopper for holding the supporting plate portion in the retracted state, it is supported by the stopper when it is not necessary to transmit / receive data by the RFID inlet, even when the attachment is not transported or stored. By holding the plate portion in the retracted state, the RFID tag does not protrude greatly from the outer surface of the attached object. Therefore, the RFID tag that protrudes from the outer surface of the attached object in a steady state collides with the surrounding RFID. It is possible to prevent the tag from dropping or being damaged or malfunctioning.

1 is an external perspective view of an RFID tag 1A according to a first embodiment. The RFID tag 1A attached to the outer surface 9 of the attachment 7 is shown, (A) is a steady state, and (B) is a longitudinal sectional view in a retracted state. It is operation | movement explanatory drawing at the time of use of RFID tag 1A. It is an external appearance perspective view of RFID tag 1A concerning the 1st modification of a 1st example. The RFID tag 1A concerning the 2nd modification of a 1st Example is shown, (A) is an external appearance perspective view, (B) is a longitudinal cross-sectional view of the state attached to the outer surface 9 of the to-be-attached object 7. FIG. FIG. 7 is an external perspective view showing an RFID tag 1A according to a third modified embodiment of the first embodiment, in a state where the mounting plate portion 4 and the restoring spacer plate portion 6 are configured by a pair of elastic frames 10A, 10A. 1 shows an RFID tag 1A according to a fourth modified embodiment of the first embodiment, in which (A) is an external perspective view of a state in which a mounting plate portion 4 and a restoring spacer plate portion 6 are constituted by a pair of elastic bodies 10B and 10B. (B) is an external perspective view of a state in which the mounting plate portion 4 is disposed on the rectangular bottom plate portion 12 of each elastic body 10B. FIG. 7 is an external perspective view showing the RFID tag 1B according to the second embodiment, with the inlet holder 3 and the protective cover body 13 separated. (A) is a longitudinal sectional view of the RFID tag 1B in the steady state, and (B) is a longitudinal sectional view in a retracted state. An RFID tag 1C according to a third embodiment is shown, in which (A) is a plan view and (B) is a longitudinal sectional view. 4A and 4B show an RFID tag 1D according to a fourth embodiment, in which (A) is an external perspective view, and (B) is a longitudinal sectional view in a retracted state.

Below, the 1st Example of this invention is described based on FIGS. 1-3.
The RFID tag 1 </ b> A includes an RFID inlet 2 and an inlet holder 3 that holds the RFID inlet 2.

  The RFID inlet 2 includes an IC chip and an antenna electrically connected to the IC chip, and the IC chip and the antenna are disposed on a synthetic resin insulating sheet. The RFID inlet 2 is a non-contact type battery-less type that can transmit and receive signals such as commands and data without contact with an input / output device (reader / writer) (not shown). The RFID inlet 2 may be one in which an IC chip and an antenna are disposed on an insulating sheet and this is covered with a synthetic resin outer package. The RFID inlet 2 may operate in any band such as an HF band (for example, 13.56 MHz) and a UHF band (for example, 953 MHz or 2.45 GHz).

  The inlet holder 3 includes a mounting plate portion 4 that is attached to an outer surface 9 of a metal attachment 7 (see FIG. 2), a non-metallic support plate portion 5 that supports the RFID inlet 2, and the support plate. The part 5 includes a restoring spacer plate part 6 that holds the part 5 apart from the mounting plate part 4 at a predetermined interval and generates a resilient force when compressed and deformed.

  The carrier plate 5 is formed in a flat rectangular shape using a hard synthetic resin, an elastic synthetic resin or a synthetic rubber, and the RFID inlet 2 is fixed to the back surface of the carrier plate 5 with an adhesive or an adhesive tape. Being carried. On the other hand, the mounting plate portion 4 is formed in the same shape as the supporting plate portion 5 using a hard synthetic resin, an elastic synthetic resin, a synthetic rubber, or a metal plate, and an adhesive layer 8 ( 2), the outer surface 9 of the attachment 7 is attached. A release paper (not shown) is detachably attached to the adhesive layer 8, and the adhesive surface is protected by the release paper until it is attached to the outer surface 9 of the attachment 7. The pressure-sensitive adhesive layer 8 can be provided by applying a pressure-sensitive adhesive on the back surface of the mounting plate portion 4 or attaching a double-sided pressure-sensitive adhesive tape. Further, instead of the adhesive layer 8, a magnet may be disposed on the mounting plate portion 4 and may be attracted to the outer surface 9 of the metal attachment 7 by the magnetic force of the magnet. Furthermore, when the attachment plate portion 4 is formed of a ferromagnetic material such as an iron plate, the ferromagnetic material may be subjected to a magnetization process.

  The restoring spacer plate portion 6 is provided between the mounting plate portion 4 and the carrying plate portion 5. In this first embodiment, the restoring spacer plate portion 6 connects the edges of the mounting plate portion 4 and the carrying plate portion 5 that are opposed to each other at the top and bottom. In this way, they are arranged at four locations on the side. Each restoring spacer plate portion 6 is formed in a cross-sectional shape that protrudes outward by a plate-like body of synthetic resin or synthetic rubber having elasticity. Here, as the synthetic resin having elasticity, polyethylene terephthalate (PET), polypropylene (PP), polyacetal (POM), polycarbonate (PC), polybutylene terephthalate (PBT), polyphenylene sulfide (PPS) and the like are applied. Among them, polyethylene terephthalate (PET) and polypropylene (PP) which are hard and excellent in tensile strength, bending strength, compression strength and elasticity can be suitably used. As the synthetic rubber, urethane rubber, silicone rubber, styrene-butadiene rubber (SBR), nitrile-butadiene rubber (NBR), butadiene rubber, isoprene rubber, chloroprene rubber and the like can be used.

  The restoring spacer plate portion 6 may be integrally formed with the mounting plate portion 4 and / or the supporting plate portion 5 made of an elastic synthetic resin or synthetic rubber.

  In the steady state where the inlet holder 3 is not subjected to external force from the front surface side of the support plate portion 5, the support plate portion 5 is attached to the mounting plate portion by the restoring spacer plate portion 6 as shown in FIG. It is held at a predetermined interval from 4. Then, when an external force is received from the surface side of the support plate portion 5, as shown in FIG. 2B, the restoring spacer plate portion 6 is compressed and deformed, and the support plate portion 5 is in a retracted state in the vicinity of the mounting plate portion 4. Become. When the external force from the surface side of the support plate portion 5 is removed, the support plate portion 5 is attached as shown in FIG. It returns to the steady state in which it is separated from the plate part 4 at a predetermined interval. It should be noted that the interval at which the support plate 5 is separated from the mounting plate 4 in a steady state is preferably set to about 1 cm.

  FIG. 3A shows a state in which the RFID tag 1A is attached to the outer surface 9 of the side wall of the metal container as the attachment 7. In this state, a steady state (see FIG. 2 (A)) in which the non-metallic carrier plate portion 5 carrying the RFID inlet 2 is held at a predetermined interval from the outer surface 9 of the attachment 7 is held. Since the deterioration of the transmission / reception function is suppressed, data transmission / reception by the RFID inlet 2 can be performed without any trouble.

  On the other hand, during transportation and storage of the attachment 7, as shown in FIG. 3B, the outer surface 9 of the attachment 7 to which the RFID tag 1A is attached is connected to another attachment via the RFID tag 1A. When pressed against the outer surface 9 of the attachment 7 or the wall surface 21 of the truck bed (or the wall surface of the building), the restoring spacer plate portion 6 is compressed and deformed by an external force applied from the surface side of the support plate portion 5, and the support plate portion 5. Is in a retracted state (see FIG. 2B) close to the mounting plate portion 4. As a result, the thickness of the RFID tag 1A is reduced and the protruding width of the attached object 7 from the outer surface 9 is reduced, so that the bulkiness of the attached object 7 due to the thickness of the RFID tag 1A can be eliminated. Further, when the external force is removed, a steady state in which the supporting plate portion 5 is separated from the mounting plate portion 4 at a predetermined interval by the elastic force generated in the restored deformable spacer plate portion 6 (see FIG. 2A). Can be automatically restored.

  FIG. 4 shows a first modified embodiment of the first embodiment. In the first modified embodiment, the restoration spacer plate portion 6 that connects the edges of the mounting plate portion 4 and the support plate portion 5 is arranged in the front-rear direction. Or it arrange | positions in two places of the side part which opposes in the left-right direction. Thus, at least a pair of restoring spacer plate portions 6 may be provided at two locations on the side portions facing each other in the front-rear direction or the left-right direction.

  FIG. 5 shows a second modified embodiment of the first embodiment, and this second modified embodiment faces in the front-rear direction or the left-right direction of the carrier plate portion 5 as shown in FIG. A pair of restoring spacer plate portions 6 are arranged on the two edges, and a belt-like mounting plate portion 4 is coupled to the lower end of each restoring spacer plate portion 6. Thus, the mounting plate portion 4 does not necessarily have to be formed in the same shape as the support plate portion 5, and can be attached to the outer surface 9 of the metal attachment 7 (see FIG. 5B). If it is.

  FIG. 6 shows a third modified embodiment of the first embodiment. This third modified embodiment is a synthetic resin plate or a synthetic resin having elasticity at two places on the front and rear or the left and right of the back surface of the support plate portion 5. Elastic frame bodies 10A, 10A each having a substantially hexagonal cross section formed using a rubber plate are provided, and the top plate portion 11 of each elastic frame body 10A is joined to the back surface of the support plate portion 5. The rectangular bottom plate portion of each elastic frame 10A is used as the mounting plate portion 4, and the band plate portion bent into two character shapes that are bent in a square shape and connects the mounting plate portion 4 and the top plate portion 11 is restored to the restoring spacer plate. This is part 6. Note that the elastic frame body 10 </ b> A can also be disposed at four locations on the front and rear and the left and right of the back surface of the support plate portion 5.

  Even in such a configuration, the inlet holding body 3 is in a retracted state in which the restoring spacer plate portion 6 is compressed and deformed by an external force from the surface side of the carrying plate portion 5 so that the carrying plate portion 5 is close to the mounting plate portion 4. When the external force is removed, the support plate portion 5 is separated from the mounting plate portion 4 at a predetermined interval by the elastic force generated in the compressed and deformed restoration spacer plate portion 6 and returns to the steady state.

  FIG. 7A shows a fourth modified embodiment of the first embodiment. The fourth modified embodiment is a synthetic resin having elasticity at two locations on the front and rear sides or on the left and right of the back surface of the support plate portion 5. A pair of elastic bodies 10B, 10B each having a substantially Z-shaped cross section formed using a plate or a synthetic rubber plate are disposed, and the top plate portion 11 of each elastic body 10B is disposed on the back surface of the support plate portion 5. The rectangular bottom plate portion of each elastic body 10B is used as the attachment plate portion 4, and the inclined strip portion connecting the attachment plate portion 4 and the top plate portion 11 is used as the restoring spacer plate portion 6. It should be noted that the pair of elastic bodies 10B and 10B can also be disposed at the front and rear of the back surface of the support plate portion 5 and at the left and right four locations. Further, as shown in FIG. 7B, the rectangular bottom plate portion 12 of each elastic body 10 </ b> B can be joined to the mounting plate portion 4 formed in the same shape as the carrying plate portion 5.

  In the first embodiment and each modified embodiment, the inlet holder 3 is not limited to a rectangular three-dimensional shape, and may be another three-dimensional shape such as a circle, a triangle, or a polygon.

  8 and 9 show a second embodiment, and the RFID tag 1B of the second embodiment includes a protective cover body 13 that covers the side portion of the inlet holder 3. The protective cover 13 includes a truncated pyramid-shaped inclined plate portion 15 that extends obliquely downward from the four edges of the substrate portion 14 fixed to the upper surface of the support plate portion 5 and surrounds the side portion of the inlet holder 3. The four corner portions of the inclined plate portion 15 are divided by the cuts 16. The inclined plate portion 15 comes into contact with the outer surface 9 of the metal attachment 7 when the carrier plate portion 5 is in a steady state (see FIG. 9A) in which it is held away from the attachment plate portion 4. It is formed in length. As the material of the protective cover body 13, the above-described elastically deformable synthetic resin or synthetic rubber is used. In the case where such a protective cover body 13 is provided, the RFID inlet 2 can be fixed to the surface side of the carrier plate portion 5.

  In this configuration, when the inlet holder 3 is selectively changed between the retracted state (see FIG. 9B) and the steady state (see FIG. 9A), the protective cover body 13 exerts its elastic deformation action. Through the state change of the inlet holder 3. Thereby, since the side part of the inlet holding body 3 can always be covered with the protective cover body 13, the impact applied to the inlet holding body 3 from the side and the entry of foreign matter into the inlet holding body 3 can be prevented. In addition, the RFID inlet 2 carried on the carrying plate portion 5 can be protected.

  FIG. 10 shows a third embodiment, and the RFID tag 1C according to the third embodiment urges the carrier plate portion 5 in the direction separating the mounting plate portion 5 from the mounting plate portion 4 and restores the steady state. It has. The auxiliary biasing means includes a spring 17 interposed between the mounting plate portion 4 and the support plate portion 5, and a spring made of metal or synthetic resin can be used for the spring 17. Here, in the illustrated embodiment, four springs 17 made of coil springs are arranged at the four corner positions of the mounting plate portion 4 and the supporting plate portion 5 formed in a flat plate rectangular shape. If the urging | biasing effect | action which leaves | separates uniformly from the attachment board part 4 is obtained, the number and arrangement | positioning position of the spring 17 will not be limited to this. Further, a leaf spring can be used instead of the coil spring.

  In this configuration, the supporting plate portion 5 can be quickly and reliably returned from the retracted state to the steady state by the auxiliary biasing means including the spring 17.

  FIG. 11 shows a fourth embodiment, and an RFID tag 1D according to the fourth embodiment includes stoppers 18 and 18 for holding the carrier plate portion 5 in a retracted state. The stoppers 18 and 18 are arranged in the vicinity of the edge of the upper surface of the support plate 5 in front and rear or a pair of left and right. Each stopper 18 is formed of a substantially U-shaped hook, and one end of the hook is pivotally connected to the upper surface of the support plate 5 via an attachment member 19 fixed in the vicinity of the edge of the upper surface of the carrier plate 5 so as to be vertically rotatable. In addition, a pair of engaging grooves 20, 20 that can engage the other ends of the stoppers 18, 18 are formed on the edge of the mounting plate portion 4.

  In this configuration, in order to use the stoppers 18, 18, the carrier plate part 5 is pressed from the surface side to bring the carrier plate part 5 into a retracted state close to the mounting plate part 4, and in this state, the stopper 18, By engaging the other end of 18 with the engagement grooves 20 and 20 of the mounting plate portion 4, the carrier plate portion 5 can be held in the retracted state as shown in FIG. Thus, when it is not necessary to transmit / receive data by the RFID inlet 2 even when the attachment 7 is not transported or stored, the RFID tag 2 is held by the stoppers 18 and 18 in the retracted state. Since 1D does not protrude greatly from the outer surface 9 of the attachment 7, the RFID tag 1D protruding from the outer surface 9 of the attachment 7 in a steady state collides with the surrounding one, and the RFID tag 1D is dropped or damaged. Failure can be prevented in advance.

  In the above-described fourth embodiment, the stoppers 18 and 18 are disposed on the carrier plate portion 5 and the engaging grooves 20 and 20 are disposed on the mounting plate portion 4. It is also possible to reverse the positional relationship between the 18, 18 and the engaging grooves 20, 20. In addition, the stoppers 18 and 18 are substantially U-shaped hooks, but instead of this, a hook provided with a hook-and-loop fastener at the ends of a pair of flat strips or a hook that can be engaged and disengaged at the ends of the pair of flat strips It may be provided.

1A to 1D RFID tag 2 RFID inlet 3 Inlet holder 4 Mounting plate portion 5 Supporting plate portion 6 Restoring spacer plate portion 7 Mounted object 9 Outer surface 13 Protective cover body 17 Spring (auxiliary biasing means)
18 Stopper

Claims (5)

An RFID chip having an IC chip having a memory for storing data in a rewritable manner and an antenna connected to the IC chip, and having a function of transmitting and receiving the data in a contactless manner with a predetermined input / output device;
A mounting plate portion attached to the outer surface of the metal attachment, a non-metallic carrier plate portion supporting the RFID inlet, the carrier plate portion being held at a predetermined distance from the mounting plate portion, and It consists of at least a pair of restoring spacer plates that generate elastic force when compressed and deformed, and when the restoring spacer plates are compressed and deformed by an external force from the surface side of the carrying plate, the carrying plate is in a retracted state close to the mounting plate. When the external force is removed, the carrier plate portion is provided with an inlet holder that returns to a steady state by separating the carrier plate portion from the mounting plate portion at a predetermined interval by the elastic force generated in the compressed and deformed restoration spacer plate portion. RFID tag characterized by.   2. The RFID tag according to claim 1, wherein the restoring spacer plate portion is made of an elastic synthetic resin or synthetic rubber.   The RFID tag according to claim 1 or 2, further comprising a non-metallic protective cover body that is elastically deformable and covers a side portion of the inlet holder.   4. An auxiliary urging means comprising a spring for urging the support plate portion in a direction away from the mounting plate portion and returning to a steady state. RFID tag described in 1.   The RFID tag according to any one of claims 1 to 4, further comprising a stopper that holds the carrying plate portion in a retracted state.

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