CN216436136U

CN216436136U - Anti-interference structure and locking device for installing radio frequency antenna

Info

Publication number: CN216436136U
Application number: CN201822147970.0U
Authority: CN
Inventors: 夏敬懿
Original assignee: Individual
Current assignee: Van Fang Digital Technology Co ltd
Priority date: 2018-12-20
Filing date: 2018-12-20
Publication date: 2022-05-03
Anticipated expiration: 2028-12-20

Abstract

The utility model discloses an anti-interference structure and a locking device for mounting a radio frequency antenna, wherein the anti-interference structure comprises an outer shell and an inner shell, a first accommodating groove is formed in the outer shell, at least the bottom wall of the first accommodating groove is made of insulating materials, a second accommodating groove is formed in the inner shell, at least the bottom wall of the second accommodating groove is made of metal materials, the inner shell is accommodated in the first accommodating groove, a limiting structure matched with the inner shell is arranged on the inner wall of the first accommodating groove, an accommodating space is formed between the bottom wall of the first accommodating groove and the bottom wall of the second accommodating groove, a radio frequency antenna plate is arranged in the accommodating space, and one surface of a substrate, on which a metal layer is laid, faces to the bottom wall of the second accommodating groove. The anti-interference structure of the utility model accommodates the radio frequency antenna plate in the middle through the outer shell and the inner shell, the bottom wall of the inner shell made of metal has shielding effect on external electromagnetic waves so as to reduce the interference on the radio frequency antenna, the bottom wall of the outer shell made of insulating material is beneficial to the radio frequency antenna to receive and transmit radio frequency signals, and the anti-interference structure is neat and beautiful in whole and convenient to install.

Description

Anti-interference structure and locking device for installing radio frequency antenna

Technical Field

The utility model relates to the technical field of structures for mounting radio frequency antennas, in particular to an anti-interference structure for mounting a radio frequency antenna and a locking device applying the anti-interference structure for mounting the radio frequency antenna.

Background

A radio frequency antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium, or vice versa. A component for transmitting or receiving electromagnetic waves in a radio device. All engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy, RFID seal reading and writing and the like transmit information by utilizing electromagnetic waves and work by depending on radio frequency antennas. In addition, in the transmission of energy by electromagnetic waves, the radiation of energy other than signals also requires radio frequency antennas. The existing radio frequency antenna is arranged on a substrate and is seriously influenced by external environmental factors, for example, high-humidity air easily causes interference and diffraction influence on transmission or reception, so that transmitted or received signals are inaccurate, and the access rate and the data transmission rate of a user are seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an anti-interference structure for mounting a radio frequency antenna, aiming at reducing the interference effect of the outside on the radio frequency antenna.

In order to achieve the above object, the anti-interference structure for mounting a radio frequency antenna provided by the present invention comprises an outer shell and an inner shell, wherein a first accommodating groove is formed in the outer shell, at least the bottom wall of the first accommodating groove is made of an insulating material, a second accommodating groove is formed in the inner shell, at least the bottom wall of the second accommodating groove is made of a metal material, at least the bottom wall of the inner shell is accommodated in the first accommodating groove, and a limiting structure matched with the inner shell is arranged on the inner wall of the first accommodating groove, so that an accommodating space is formed between the bottom wall of the first accommodating groove and the bottom wall of the second accommodating groove;

the radio frequency antenna is arranged on a radio frequency antenna plate, the radio frequency antenna plate comprises a substrate, one surface of the substrate is paved with a metal layer, the other surface of the substrate is paved with the radio frequency antenna, the radio frequency antenna plate is arranged in the accommodating space, one surface of the substrate paved with the metal layer faces the bottom wall of the second accommodating groove, the maximum thickness of the substrate is a, a is more than or equal to 1.0mm and less than or equal to mm, and the radio frequency antenna is electrically connected with an external circuit matched with the radio frequency antenna through a feeding part;

the radio frequency antenna comprises a high-frequency RFID antenna and an ultrahigh frequency RFID antenna, the high-frequency RFID antenna is annularly arranged on the surface of the substrate, the feed part comprises a high-frequency feed part and an ultrahigh frequency feed part, the high-frequency RFID antenna is provided with at least two high-frequency feed parts electrically connected with the high-frequency RFID antenna, and the ultrahigh frequency RFID antenna is provided with at least one ultrahigh frequency feed part electrically connected with the ultrahigh frequency RFID antenna;

at least two high-frequency feeding portions are exposed on the surface, with the metal layer, of the substrate, and at least one ultrahigh-frequency feeding portion is exposed on the surface, with the metal layer, of the substrate.

Preferably, the bottom wall of the second accommodating groove is provided with at least one jack, the jack is communicated with the accommodating space, an access point of an external circuit penetrates through the jack and is electrically connected with the feeding portion, when the external high-frequency circuit matched with the high-frequency RFID antenna is conducted, the high-frequency RFID antenna can transmit and receive electromagnetic waves, and when the external ultrahigh-frequency circuit matched with the ultrahigh-frequency RFID antenna is conducted, the ultrahigh-frequency RFID antenna can transmit and receive electromagnetic waves.

Preferably, the limit structure includes at least one limit post, the diapire of first holding tank is equipped with at least one limit post, interior casing is equipped with rather than the spacing hole of complex, one limit post is inserted and is located one limit hole.

Preferably, at least one connecting column is arranged in the second accommodating groove along the groove depth direction, a threaded hole is formed in one end, far away from the bottom wall of the second accommodating groove, of the connecting column, a limiting hole is formed in one end, close to the bottom wall of the second accommodating groove, of the connecting column, the threaded hole is communicated with the limiting hole, the largest diameter of the threaded hole is smaller than the smallest diameter of the limiting hole, and threads are arranged on the inner wall of the threaded hole;

the top end of the limiting column is provided with a threaded hole, and the threaded hole of the connecting column is communicated with the corresponding threaded hole of the limiting column.

Preferably, the outer side wall of at least one of the limiting columns is axially connected to the side wall of the first accommodating groove, the outer side wall of the connecting column matched with the limiting column is axially connected to the side wall of the second accommodating groove, an opening is axially formed in the hole wall of the limiting hole, and when one limiting column is inserted into one limiting hole, the joint of the limiting column and the groove wall of the second accommodating groove is limited in the opening.

Preferably, at least one first protruding rib transversely arranged is convexly arranged on the inner side wall of the first accommodating groove, after the inner shell is installed on the outer shell, the outer side wall of the inner shell is in contact with the inner side wall of the first accommodating groove, and the first protruding rib protrudes out of the free end of the side wall of the second accommodating groove far away from the bottom wall of the second accommodating groove;

and/or, at least one block hole has been seted up to the inside wall of first holding tank, the lateral wall correspondence of interior casing is equipped with the protruding muscle of at least one horizontal second that sets up, interior casing install in behind the shell body, the lateral wall of interior casing touches and connects the inside wall of first holding tank, one the protruding muscle of second inserts one the block hole.

Preferably, the first holding tank inside wall is equipped with the clamping layer near one side week of diapire, the clamping layer with the lateral wall of interior casing touches and connects, the edge of clamping layer the length dimension of spacing post extending direction is less than the inside wall edge of first holding tank the length dimension of spacing post extending direction.

Preferably, the number of the jacks is at least one;

and/or the shape of the jack includes a circle, a square, a polygon, and an irregular shape.

Preferably, the outer shell is made of an insulating material, and the insulating material comprises a plastic material; and/or the material of the part of the outer shell is metal material.

The utility model also provides a locking device which comprises the anti-interference structure, the locking device comprises a lock body, the lock body is provided with a radio frequency circuit matched with the radio frequency antenna, and the lock body is arranged in the second accommodating groove.

According to the radio frequency antenna, the anti-interference structure accommodates the radio frequency antenna plate in the middle through the outer shell and the inner shell, the bottom wall made of the metal material of the inner shell has a shielding effect on external electromagnetic waves so as to reduce interference on the radio frequency antenna, the bottom wall made of the insulating material of the outer shell is beneficial to the radio frequency antenna to receive and transmit radio frequency signals, meanwhile, the outer shell and the inner shell play a protection role on the radio frequency antenna plate, and the influence of the external environment on the radio frequency antenna plate is avoided, such as air with high external humidity and the like, on the other hand, the whole radio frequency antenna is neat and attractive, the use is wide, and the installation is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is an exploded view of the anti-jamming structure and antenna board of the present invention;

FIG. 2 is a schematic view of an alternate angle exploded view of the anti-jamming structure and antenna board of the present invention;

fig. 3 is a schematic perspective view of the anti-interference structure and the antenna board of the present invention assembled together.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Outer casing	211	Jack hole
11	First holding tank	22	Limiting hole
				12	Limiting column	23	Connecting column
13	Second convex rib	212	Clamping hole
				20	Inner shell	30	Radio frequency antenna board
21	Second holding tank

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be understood, however, that elements, structures and features of one example may be beneficially incorporated in other embodiments without further recitation.

It should be noted that all the directional indications (based on the upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (based on the figure), and if the specific posture is changed, the directional indication is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

A radio frequency antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium, usually free space, or vice versa. A component for transmitting or receiving electromagnetic waves in a radio device. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy and the like all use electromagnetic waves to transmit information and rely on radio frequency antennas to work. In addition, in the transmission of energy by electromagnetic waves, the radiation of energy other than signals also requires radio frequency antennas. The common rf antenna is reversible, i.e. the same rf antenna can be used as both the transmitting and receiving rf antennas. The same rf antenna is the same as the basic characteristic parameter for transmission or reception. At present, radio frequency antennas are more and more widely applied, the anti-interference requirement is more and more strict, and the design types are diversified. Such as a radio frequency antenna used in an RFID electronic tag or label, to be widely used in the field of logistics. It can store data related to merchandise, credit cards, access cards, and vehicle control in RF. The radio frequency antenna is matched with a radio frequency IC chip in the RFID electronic seal, and the RFID reader matched with the radio frequency antenna reads information in the radio frequency IC chip. The RFID electronic seal can also be applied to the locking device, and when the locking device is in a locking state, the radio frequency IC chip can be read.

When manufacturing the RFID tag in the market, a plastic sheet is prepared, a radio frequency antenna and a circuit for receiving and transmitting signals are manufactured on the plastic sheet, and a radio frequency IC chip is attached to the circuit of the plastic sheet, and a pin of the radio frequency IC chip is electrically connected to the radio frequency antenna. When the RFID electronic tag is manufactured, the surface with the radio-frequency antenna and the radio-frequency IC chip is directly coated with the adhesive, so that the RFID electronic tag can be attached to a commodity, an object or a part for use. When the RFID reader transmits a signal to the RFID electronic tag for receiving, the radio frequency IC chip is started, the data stored in the radio frequency IC chip is transmitted to the RFID reader through the radio frequency antenna for receiving, and the RFID reader can read the return signal of the RFID electronic tag. Since the application of the conventional typical RFID tag is limited by the influence of external environmental factors, for example, signals read by the RFID reader are easily interfered and diffracted in water, liquid or high humidity air, which results in a high error rate of reading signals, and if the RFID tag is attached to an object with a metal surface, the data reading error rate is high or the RFID tag cannot be read.

The circuit is a conductive loop consisting of a metal wire and electrical and electronic components, and is called a circuit. When the circuit is connected, the circuit can work by generating current, the circuit can work by an external power supply, and the circuit can work by generating current by an RFID technology. Different circuit functions can be realized according to different communicated electronic elements. A continuously connected segment of the circuit has two access points between which all the electronic components are connected. The access point of the circuit is a point capable of communicating with the circuit, the access point is attached to a physical mechanical component, the component may be a conductive sheet, a conductive block or a conductive plate, or may be an end of a wire, the conductive sheet, the conductive block, the conductive plate and the exposed part of the wire form a conductive area (also referred to as a conductive cell), the conductive area is composed of numerous conductive contacts, any one of the conductive contacts can be communicated with the corresponding circuit, and when there is current in the circuit, the circuit can perform corresponding work. The electrical connection in the utility model means that the access point mechanical structure of the circuit directly touches to make the circuit connected.

Referring to fig. 1 and 2, the main object of the present invention is to provide an anti-interference structure for mounting a radio frequency antenna, wherein the radio frequency antenna (not labeled) is disposed on a radio frequency antenna board 30, the radio frequency antenna board 30 includes a substrate (not labeled), one surface of the substrate is laid with a metal layer (not labeled), and the other surface is laid with the radio frequency antenna.

The anti-interference structure comprises an outer shell 10 and an inner shell 20, wherein a first accommodating groove 11 is formed in the outer shell 10, at least the bottom wall (not marked) of the first accommodating groove 11 is made of an insulating material, a second accommodating groove 21 is formed in the inner shell 20, at least the bottom wall (not marked) of the second accommodating groove 21 is made of a metal material, the inner shell 20 is accommodated in the first accommodating groove 11, a limiting structure (not marked) matched with the inner shell 20 is arranged on the inner wall of the first accommodating groove 11, an accommodating space (not marked) is formed between the bottom wall of the first accommodating groove 11 and the bottom wall of the second accommodating groove 21, the radio frequency antenna plate 30 is arranged in the accommodating space, one surface of the substrate, on which the metal layer is laid, faces the bottom wall of the second accommodating groove 21, the maximum thickness of the substrate is a, a is more than or equal to 1.0mm and less than or equal to mm, and the radio frequency antenna is electrically connected with an external circuit (not marked) matched with the radio frequency antenna through a feeding part (not marked);

the radio frequency antenna comprises a high-frequency RFID antenna (not marked) and an ultrahigh frequency RFID antenna, the high-frequency RFID antenna is annularly arranged on the surface of the substrate, the feed part comprises a high-frequency feed part and an ultrahigh frequency feed part, the high-frequency RFID antenna is provided with at least two high-frequency feed parts electrically connected with the high-frequency RFID antenna, and the ultrahigh frequency RFID antenna is provided with at least one ultrahigh frequency feed part electrically connected with the ultrahigh frequency feed part;

at least two high-frequency feeding portions (not marked) are exposed on one surface of the substrate with the metal layer, and at least one ultrahigh-frequency feeding portion is exposed on one surface of the substrate with the metal layer. The depth of the first housing groove 11 and the second housing groove 21 is designed according to the use requirement, and is not limited. As shown in fig. 3, the surface of the rf antenna plate 30 abuts against the groove wall of the first receiving groove 11 and the outer surface of the inner housing 20, so that the rf antenna plate 30 is clamped therein and is fixed in a limited manner to prevent shaking during use.

The shapes of the outer housing 10 and the inner housing 20 are preferably rectangular, but may be other shapes, such as square, circle, oval, etc. There are various connection manners of the outer housing 10 and the inner housing 20, such as interference fit connection between the outer housing 10 and the inner housing 20, snap connection between the outer housing 10 and the inner housing 20 by providing a snap structure, screw connection between the outer housing 10 and the inner housing 20 by screws, nuts, or any combination thereof. The whole outer case 10 may be made of an insulating material; or the whole outer housing 10 may be made of an insulating material, and a metal layer, a metal plate, a metal sheet, a metal block, or the like is laid on the inner side of the bottom wall of the first accommodating groove 11; the bottom wall of the first accommodating groove 11 may also be made of metal, the side wall connected to the bottom wall is made of plastic, or the side wall close to the bottom wall is made of insulating material, and the side wall far from the bottom wall is made of metal or other materials. The outer housing 10 and the inner housing 20 may be integrally formed, or may be separately connected and fixed by welding, gluing, screwing, or the like. The sizes of the outer shell 10 and the inner shell 20 can be designed according to the use requirements of devices, components and the like using anti-interference structures, for example, when the outer shell 10 and the inner shell 20 are used in a lock packaging device, the width of the outer shell 10 is 34.8mm, the length of the outer shell 10 is 114.4mm, the width of the inner shell 20 is 31.4mm, and after the outer shell 10 and the inner shell 20 are installed, the length of the inner shell 20 is 110.45mm, the outer side wall of the inner shell 20 abuts against or abuts against the inner side wall of the outer shell 10.

In the utility model, the anti-interference structure holds the radio frequency antenna plate 30 in the middle through the outer shell 10 and the inner shell 20, the bottom wall of the metal material of the inner shell 20 has a shielding effect on external electromagnetic waves so as to reduce interference on the radio frequency antenna, the bottom wall of the insulating material of the outer shell 10 is beneficial to the radio frequency antenna to receive and transmit radio frequency signals, and meanwhile, the outer shell 10 and the inner shell play a protection role on the radio frequency antenna plate 30 to avoid the influence of external environment on the radio frequency antenna plate, such as air with higher external humidity and the like.

The insulating material is a material that is not conductive at the allowable voltage. The solid insulating material comprises: insulating paint and insulating glue; a fibrous article; rubber, plastic and articles thereof; glass, ceramic articles; mica, asbestos, and products thereof. The ideal antenna does not consider the feeding part, but in order to extract signals, the extracted point is called the feeding part, the english is expressed by feedpoint, the field distribution of the antenna is generally influenced by the addition of the feeding part, and the selection of the point is also exquisite. The surface of the substrate is also provided with a feed part of the antenna, the feed part can be positioned on one surface of the substrate, which is provided with the metal layer, or deviates from the other surface of the metal layer, the substrate is provided with a plurality of feed parts, if the surface of the substrate, which is provided with the metal layer, and the other surface deviating from the metal layer are provided with feed parts, the feed parts are conveniently connected with an external circuit, and meanwhile, different feed parts in one antenna are used according to different requirements of different external circuits to realize corresponding effects. According to different feeding parts, the length of the radio frequency antenna is changed, and the working performance of the radio frequency antenna is changed. The feed part and the antenna can be directly and electrically connected with an external circuit matched with the radio frequency antenna through a feed line or a lead so as to receive/send radio frequency signals, for example, the feed part positioned on one surface of the substrate with the metal layer is the structure; or directly taking a point on the radio frequency antenna, wherein the taken point can be directly and electrically connected with an external circuit matched with the radio frequency antenna through a feeder or a lead, for example, a feeder part positioned on one surface of the substrate, which is far away from the metal layer, is the structure. In the present invention, a point directly taken on the radio frequency antenna for connection with an external circuit is also referred to as a feeding section. A plurality of feed parts can be arranged on one antenna, and two feed parts can be electrically connected with a feed line or a lead in a welding, gluing, splicing and other modes so as to be communicated with an external circuit.

In the present invention, the radio frequency antenna board 30 may be of various types as long as it can be mounted by using the above-described anti-interference structure.

Referring to fig. 1, further, at least one insertion hole 211 is formed in the bottom wall of the second receiving groove 21, an access point of an external circuit passes through the insertion hole 211 and is electrically connected to the feeding portion, when the external high-frequency circuit matched with the high-frequency RFID antenna is turned on, the high-frequency RFID antenna can transmit and receive electromagnetic waves, and when the external ultrahigh-frequency circuit matched with the ultrahigh-frequency RFID antenna is turned on, the ultrahigh-frequency RFID antenna can transmit and receive electromagnetic waves.

The access point of the external circuit is electrically connected with the feeding portion through a wire or a feeder line, the wire or the feeder line penetrates through the jack 211 to be electrically connected with the feeding portion, the external circuit work is achieved, the jack 211 facilitates connection of circuits, the internal structure design is simplified, excessive and messy inner wall circuits are avoided, and materials are saved. The number of the insertion holes 211 may be one, two or more, the insertion holes 211 may be circular, square, triangular, prismatic, irregular, etc., the insertion holes 211 are located in the middle of the bottom wall of the second receiving groove 21, and the insertion holes 211 may be located on both sides, preferably, opposite to the power feeding portion. The insertion holes 211 can occupy one-half area, one-third area, etc. of the bottom wall of the second receiving groove 21, and the size is set according to the design requirement, and in the present invention, the size is not strictly defined.

Further, the limiting structure includes at least one limiting post 12, the bottom wall of the first accommodating groove 11 is provided with at least one limiting post 12, the inner shell 20 is provided with a limiting hole 22 matched with the inner shell, and one limiting post 12 is inserted into one limiting hole 22.

Wherein, spacing post 12 makes to be formed with the accommodation space that is used for laying radio frequency antenna board 30 between the diapire of shell body 10 and the diapire of interior casing 20, and the quantity of spacing post 12 can be one, two or more, if be equipped with four spacing posts 12, and the inner wall of first holding tank 11 is located to four spacing post 12 weeks for interior casing 20 atress is even, strengthens the stability of the relative position relation of shell body 10 and interior casing 20. Spacing post 12 and the mode that spacing hole 22 cooperation is connected, the position of further fixed interior casing 20 prevents that interior casing 20 from rocking in first holding tank 11, further strengthens the stability of the relative position relation of outer casing 10 and interior casing 20.

Further, at least one connecting column 23 is arranged in the second accommodating groove 21 along the groove depth direction, the connecting column 23 is far away from the internal threaded hole formed in one end of the bottom wall of the second accommodating groove 21, the internal threaded hole 22 is formed in one end close to the bottom wall of the second accommodating groove 21, the threaded hole (not marked) is communicated with the limiting hole 22, the maximum diameter size of the threaded hole (not marked) is smaller than the minimum diameter size of the limiting hole 22, the inner wall of the threaded hole is provided with threads, the top end of the limiting column 12 is provided with the threaded hole, and the threaded hole of the connecting column 23 is communicated with the threaded hole of the corresponding limiting column 12.

Wherein, a screw bolt advances the screw hole of a spliced pole 23 to rather than the screw hole of a spacing post 12 that corresponds for outer shell 10 and interior casing 20 relative position are fixed, and this kind of design reinforcing overall structure's stability, in order to avoid receiving external striking or other external force to make outer shell 10 and interior casing 20 separate.

Further, the outer side wall of at least one limiting column 12 is axially connected to the side wall of the first accommodating groove 11, the outer side wall of the connecting column 23 matched with the outer side wall is axially connected to the side wall of the second accommodating groove 21, an opening is axially formed in the hole wall of the limiting hole 22, and when one limiting column 12 is inserted into one limiting hole 22, the joint of the limiting column 12 and the groove wall of the second accommodating groove 21 is limited in the opening.

Wherein, spacing post 12 is preferably located the lateral wall of first holding tank 11, practices thrift the space. If spacing post 12 is located the diapire of first holding tank 11, increased the required space of first holding tank 11, the structure is not compact, extravagant material, raise the cost.

Furthermore, at least one first protruding rib (not labeled) arranged transversely is convexly arranged on the inner side wall of the first accommodating groove 11, after the inner shell 20 is installed on the outer shell 10, the outer side wall of the inner shell 20 contacts with the inner side wall of the first accommodating groove 11, and the first protruding rib protrudes out of the free end of the side wall of the second accommodating groove 21 far away from the bottom wall of the second accommodating groove;

and/or, the inner side wall of the first accommodating groove 11 is provided with a fastening hole 212, the outer side wall of the inner housing 20 is correspondingly provided with a second convex rib 13, after the inner housing 20 is installed on the outer housing 10, the outer side wall of the inner housing 20 contacts with the inner side wall of the first accommodating groove 11, and a second convex rib 13 is inserted into a fastening hole 212.

Wherein, anti-interference structure is through first protruding muscle, and/or the setting of second protruding muscle 13 for interior casing 20 installs and can judge whether to connect in place through macroscopic and feel in outer casing 10, is convenient for simultaneously interior casing 20 and outer casing 10 threaded connection. The length direction of first protruding muscle is along the horizontal setting of shell body 10, and the shell body 10 is vertical along the direction of spacing post 12, and is horizontal with what be vertical vertically direction, and/or the length direction of second protruding muscle 13 is along the horizontal setting of shell body 10, and the shell body 10 is vertical along the direction of spacing post 12, and is horizontal with what be vertical vertically direction. The shape of the first ribs and/or the second ribs 13 is preferably a long strip, so that the clamping strength of the outer shell 10 and the inner shell 20 is enhanced, and the stability is further increased. Of course, other shapes are possible, such as circles, cylinders, or other irregular shapes. The number of the second ribs 13 corresponds to the number of the engaging holes 212.

Further, one side week that the diapire is close to the inside wall of first holding tank 11 is equipped with the clamping layer, and the clamping layer touches with interior casing 20's lateral wall and connects, and the length dimension of the spacing post 12 extending direction of edge of clamping layer's length dimension is less than the length dimension of the spacing post 12 extending direction of the inside wall of first holding tank 11.

Wherein, the clamping layer has a certain thickness, the clamping layer and the inner side wall of the first accommodating groove 11 form a step surface (not labeled), the periphery of the free end of the side wall of the inner housing 20 is provided with a clamping part (not shown), when the inner housing 20 is installed on the outer housing 10, the clamping part and the step surface are overlapped up and down, and further the step surface limits the inner housing 20 to be close to the bottom wall of the first accommodating groove 11.

Further, the number of the insertion holes 211 is at least one;

and/or, the shape of the insertion hole 211 includes a circle, a square, a polygon, an irregular shape, and the like.

Further, the material of the outer casing 10 is an insulating material, and the insulating material includes a plastic material;

and/or, part of the material of the outer shell 10 is metal material.

The anti-interference structure is introduced through a specific radio frequency antenna plate, the anti-interference antenna plate comprises a substrate, a radio frequency antenna and a covering film, a metal layer is laid on one surface of the substrate, the radio frequency antenna comprises a high-frequency RFID antenna and an ultrahigh-frequency RFID antenna, the high-frequency RFID antenna and the ultrahigh-frequency RFID antenna are laid on the other surface of the substrate, which deviates from the metal layer, the high-frequency RFID antenna is arranged in a sheet shape, the ultrahigh-frequency RFID antenna forms at least five coils and is laid on the substrate, the ultrahigh-frequency RFID antenna is a closed square frame, the square frame is provided with an inner edge and an outer edge, two extending sections extend downwards from the two opposite sides of the square frame along the outer edge, the outer edge of the square frame between the two extending sections extends out of a connecting section, the free end of the connecting section is electrically connected with an ultrahigh-frequency feed part, and the ultrahigh-frequency RFID antenna is located in a loop coil formed by the high-frequency RFID antenna. The two high-frequency feeding portions are exposed on one surface, provided with the metal layer, of the substrate, one ultrahigh-frequency feeding portion is exposed on one surface, provided with the metal layer, of the substrate, the metal layer is provided with a conductive portion, the conductive portion is used for being electrically connected with one access point of an ultrahigh-frequency circuit adapted to the ultrahigh-frequency RFID antenna, and the other access point of the ultrahigh-frequency circuit is electrically connected with the ultrahigh-frequency feeding portion. The one side of the substrate provided with the metal layer and the other side of the substrate departing from the metal layer are covered with a covering film except for the parts of the feeding part and the conductive part. The applicable frequency range of the high-frequency RFID antenna is 13.56MHZ, and the applicable frequency range of the ultrahigh-frequency RFID antenna is any value of 860 MHZ-960 MHZ.

Access points of free ends of two wires of an external ultrahigh frequency circuit are connected and fixed with the conductive part and the ultrahigh frequency feed part through soldering tin, and the external ultrahigh frequency circuit comprises an ultrahigh frequency IC chip; the access points of the free ends of the two wires of an external high-frequency circuit are connected and fixed with the two high-frequency feeding parts through soldering tin, and the external high-frequency circuit comprises a high-frequency IC chip; the anti-interference antenna board is provided with a bottom wall facing the radio-frequency antenna or abutting against the first accommodating groove, the inner shell is arranged in the outer shell, two wires of an external ultrahigh-frequency circuit and two wires of an external high-frequency circuit penetrate through corresponding jacks, the external ultrahigh-frequency circuit and the external high-frequency circuit can be arranged in the second accommodating groove through a carrier, and ultrahigh-frequency IC chips and high-frequency IC chips in the external ultrahigh-frequency circuit and the external high-frequency circuit are read and identified through corresponding readers.

The utility model also provides a locking device, which comprises the anti-interference structure for installing the radio-frequency antenna, wherein the locking device comprises a lock body, the lock body is arranged in the second accommodating groove, an external ultrahigh-frequency circuit and an external high-frequency circuit which are matched with the radio-frequency antenna plate are arranged in the lock body, the high-frequency data transmission rate is higher than that of low frequency, and the price is not very high. The ultrahigh frequency RFID technology has the characteristics of capability of reading a plurality of tags at one time, strong penetrability, repeated reading and writing, large data memory capacity, low cost of a passive electronic tag, small volume, convenient use, high reliability, long service life and the like, and is valued by countries in the world.

The radio frequency antenna is used for being connected with a radio frequency circuit matched with the radio frequency antenna, and external circuits connected with the radio frequency antenna are matched with the radio frequency circuit. The locking device can be used in equipment such as boxes, bags, cabinets and the like.

Of course, the method can be used in other radio frequency devices, bank detection systems and the like.

For example, the device with the metal shell may be a box, a cabinet, a box or the like, or may be a bag. The device is provided with a communication structure, a component and equipment to carry out wireless communication with the outside. The antenna is a radio frequency antenna, the RFID technology is widely applied and developed in various industries at present, the RFID technology can be used for realizing data storage, anti-counterfeiting and tracking, and real-time tracking, tracing and the like of articles are realized by means of the Internet of things or the Internet. The method for applying the RFID technology to the electronic seal is more and more mature, and in the field of RFID electronic seals, the sealed articles are identified, confirmed, anti-counterfeiting and the like. In the utility model, the metal shell is arranged on the device, the metal shell is used as a back plate of the radio frequency antenna to prevent or reduce the interference of external electromagnetic waves, preferably, the metal shell covers the surface of the device, and the outer surface of the device can be partially provided with the metal shell, but the area of the metal shell is larger than or far larger than that of a substrate of the radio frequency antenna plate.

The technical scheme of the utility model provides a device with a metal shell, which comprises the metal shell and a radio frequency antenna plate, wherein a containing space is constructed in the metal shell, the radio frequency antenna plate comprises a substrate and a radio frequency antenna, one surface of the substrate is paved with a metal layer, the radio frequency antenna is paved on the other surface of the substrate, which is far away from the metal layer, the maximum thickness of the substrate is a, a is more than or equal to 1.0mm and less than or equal to 100mm, the radio frequency antenna plate is arranged on the metal shell, the thickness a of the substrate can be any value between 1.0mm and 100mm, including 1.0mm and 100mm, such as 1.9mm, 2.0mm, 2.10mm, 2.12mm, 2.16mm, 2.18mm, 2.02mm, 2.04mm, 2.20mm, 2.21mm, 2.22mm, 2.23mm, 2.24mm, 2.25mm, 2.26mm, 2.27mm, 2.28mm, 2.29mm, 2.30mm, 2.31mm, 2.32mm, 3.12mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, etc., which are not to be construed as specific examples.

The surface of the substrate, on which the metal layer is laid, is close to the metal shell, the other surface of the substrate, on which the radio-frequency antenna is laid, is arranged away from the metal shell, the radio-frequency antenna is electrically connected with a radio-frequency circuit in a device matched with the radio-frequency antenna through a feeding part, and the feeding part is exposed on the surface of the substrate;

the radio frequency antenna comprises a high-frequency RFID antenna and an ultrahigh frequency RFID antenna, the high-frequency RFID antenna is annularly arranged on the surface of the substrate, the feed part comprises a high-frequency feed part and an ultrahigh frequency feed part, the high-frequency RFID antenna is provided with at least two high-frequency feed parts electrically connected with the high-frequency RFID antenna, and the ultrahigh frequency RFID antenna is provided with at least one ultrahigh frequency feed part electrically connected with the ultrahigh frequency feed part;

at least two high-frequency feeding parts are exposed on one surface of the substrate with the metal layer, and at least one ultrahigh-frequency feeding part is exposed on one surface of the substrate with the metal layer.

In the utility model, the metal shell provided in the device with the metal shell is used for installing the radio frequency antenna plate, and the installation position can be arranged at any position of the metal shell according to the use requirement, such as the top end, the side surface and the like of the device with the metal shell, and the metal shell has a shielding effect on external electromagnetic waves, so that the interference effect of the external electromagnetic waves on the radio frequency antenna plate is reduced or reduced, and the effect of receiving/transmitting radio frequency signals by the high-frequency RFID antenna and the ultrahigh-frequency RFID antenna is further enhanced. The radio frequency antenna plate can be accommodated in a shell structure, and then is arranged in an installation position or other installation positions of a device with a metal shell through the shell, and the installation position can be arranged on the metal shell in a protruding mode or can be arranged on the metal shell in a recessed mode. The connection can be realized by screw threads such as screws, nuts and the like, and other connection modes can also be adopted.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An interference rejection structure for mounting a radio frequency antenna, comprising:

the device comprises an outer shell, a first accommodating groove is formed in the outer shell, and at least the bottom wall of the first accommodating groove is made of an insulating material; and

the inner shell is internally provided with a second accommodating groove, at least the bottom wall of the second accommodating groove is made of metal materials, at least the bottom wall of the inner shell is accommodated in the first accommodating groove, and the inner wall of the first accommodating groove is provided with a limiting structure matched with the inner shell, so that an accommodating space is formed between the bottom wall of the first accommodating groove and the bottom wall of the second accommodating groove;

2. The structure of claim 1 for mounting a radio frequency antenna for immunity from interference,

at least one jack is formed in the bottom wall of the second accommodating groove, the jack is communicated with the accommodating space, an access point of an external circuit penetrates through the jack and is electrically connected with the feeding portion, when the external high-frequency circuit matched with the high-frequency RFID antenna is conducted, the high-frequency RFID antenna can transmit and receive electromagnetic waves, and when the external ultrahigh-frequency circuit matched with the ultrahigh-frequency RFID antenna is conducted, the ultrahigh-frequency RFID antenna can transmit and receive electromagnetic waves.

3. The structure of claim 2 for mounting a radio frequency antenna for immunity from interference,

the limiting structure comprises at least one limiting column, the bottom wall of the first accommodating groove is provided with at least one limiting column, the inner shell is provided with a limiting hole matched with the inner shell, and one limiting column is inserted in one limiting hole.

4. The structure of claim 3 for mounting a radio frequency antenna for immunity from interference,

at least one connecting column is arranged in the second accommodating groove along the groove depth direction, a threaded hole is formed in one end, far away from the bottom wall of the second accommodating groove, of the connecting column, a limiting hole is formed in one end, close to the bottom wall of the second accommodating groove, of the connecting column, the threaded hole is communicated with the limiting hole, the largest diameter size of the threaded hole is smaller than the smallest diameter size of the limiting hole, and threads are arranged on the inner wall of the threaded hole;

5. The structure of claim 4 for mounting a radio frequency antenna for immunity from interference,

the outer side wall of at least one limiting column is axially connected to the side wall of the first accommodating groove, the outer side wall of the connecting column matched with the limiting column is axially connected to the side wall of the second accommodating groove, an opening is formed in the hole wall of the limiting hole in the axial direction, and when one limiting column is inserted into one limiting hole, the joint of the limiting column and the groove wall of the second accommodating groove is limited in the opening.

6. The structure of claim 5 for mounting a radio frequency antenna for immunity from interference,

the inner side wall of the first accommodating groove is convexly provided with at least one first convex rib which is transversely arranged, after the inner shell is arranged on the outer shell, the outer side wall of the inner shell is in contact with the inner side wall of the first accommodating groove, and the first convex rib is protruded out of the free end of the side wall of the second accommodating groove far away from the bottom wall of the second accommodating groove;

7. The structure of claim 6 for mounting a radio frequency antenna for immunity from interference,

one side week that first holding tank inside wall is close to the diapire is equipped with the clamping layer, the clamping layer with the lateral wall of interior casing touches and connects, the edge on clamping layer spacing post extending direction's length dimension is less than the inside wall of first holding tank is followed spacing post extending direction's length dimension.

8. The structure of claim 2 for mounting a radio frequency antenna for immunity from interference,

the number of the jacks is at least one;

9. The structure of claim 1 for mounting a radio frequency antenna for immunity from interference,

the shell is made of an insulating material, and the insulating material comprises a plastic material;

and/or the material of the part of the outer shell is metal material.

10. A locking and sealing device is characterized in that,

including the tamper resistant structure of claims 1-9, said seal including a lock body provided with radio frequency circuitry matching said radio frequency antenna.