CN111355031A

CN111355031A - Device with metal housing

Info

Publication number: CN111355031A
Application number: CN201811565169.6A
Authority: CN
Inventors: 夏敬懿
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-20
Filing date: 2018-12-20
Publication date: 2020-06-30

Abstract

The invention discloses 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, one surface of the substrate, on which the metal layer is paved, is close to the metal shell, the other surface of the substrate, on which the radio frequency antenna is paved, is arranged far away from the metal shell, the radio frequency antenna is electrically connected with a radio frequency circuit in a. According to the technical scheme, the radio frequency antenna plate is installed through the metal shell arranged on the device with the metal shell, the metal shell has a shielding effect on external electromagnetic waves, and then the interference effect of the external electromagnetic waves on the radio frequency antenna plate is reduced or reduced.

Description

Device with metal housing

Technical Field

The invention relates to the technical field of devices with accommodating spaces, in particular to a device with a metal shell.

Background

With the rapid development of scientific technology and the improvement of living standard, wireless communication is widely applied, and antenna design styles are more and more. An 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 an antenna. In addition, in transferring energy with electromagnetic waves, non-signal energy radiation also requires antennas. The existing antenna is installed 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. Communication device or subassembly have been installed to current case, package, bag, cabinet etc. and case, package, bag and cabinet reduce external interference through antenna structure's anti-interference design among the prior art, and case, package, bag, cabinet do not have the anti-jamming effect through the structure of itself.

Disclosure of Invention

The invention mainly aims to provide a device with a metal shell, aiming at reducing the interference of external electromagnetic waves on a radio frequency antenna through the metal shell.

In order to achieve the purpose, the invention 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, a metal layer is laid on one surface of the substrate, the radio frequency antenna is laid 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, and the radio frequency antenna plate is arranged on the metal shell;

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 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 metal layer is provided with a conductive part exposed on the surface of the substrate, the conductive part is used for being electrically connected with one access point of the ultrahigh frequency external circuit adapted to the ultrahigh frequency RFID antenna, and the other access point of the ultrahigh frequency external circuit is electrically connected with the ultrahigh frequency feed part.

Preferably, a mount on which the radio frequency antenna plate is disposed, the mount being disposed on the metal housing.

Preferably, the mounting piece is constructed with a mounting groove, the bottom wall of the mounting groove is made of metal, the radio frequency antenna plate is arranged in the mounting groove, one surface of the substrate, on which the metal layer is laid, faces the bottom wall of the mounting groove, and one side of the mounting piece, which deviates from the mounting groove, is connected to the metal shell.

Preferably, one side of the mounting piece, which is far away from the mounting groove, is configured with a receiving groove, and a jack is formed in the bottom wall of the receiving groove, so that the receiving groove is communicated with the mounting groove.

Preferably, the upper cover at least covers the opening of the mounting groove, and the part of the upper cover covering the opening of the mounting groove is made of an insulating material, and the insulating material comprises plastic.

Preferably, the radio frequency antenna plate is detachably connected to the surface of the mounting member, and the detachable connection includes a screw joint, a plug joint, a snap joint and the like.

Preferably, an antenna slot is concavely formed in the surface of the metal shell, the radio frequency antenna board is accommodated in the antenna slot, and the surface of the substrate, on which the metal layer is laid, faces the bottom wall of the antenna slot.

Preferably, the substrate is made of any one of a glass fiber material, an FR4 antenna board material and a circuit board material, and the metal layer is made of a metal.

Preferably, the device with the metal housing may be a box, or a cabinet, or a box.

In the invention, the metal shell provided in the device with the metal shell is used for installing the radio frequency antenna plate, and the metal shell has a shielding effect on external electromagnetic waves, thereby reducing or reducing the interference effect of the external electromagnetic waves on the radio frequency antenna plate, and further enhancing the effect of receiving/transmitting radio frequency signals by the high-frequency RFID antenna and the ultrahigh-frequency RFID antenna.

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 a schematic perspective view of a device having a metal housing according to the present invention;

fig. 2 is an exploded perspective view of the rf antenna board of the device with metal housing according to the present invention;

FIG. 3 is an exploded view of the outer housing and the inner housing of the device with metal housing of the present invention;

fig. 4 is an exploded view of the device with metal housing of the present invention.

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.

Referring to fig. 1 and 2 in combination, the main object of the present invention is to provide an apparatus 100 with a metal casing, which may be a box, a cabinet, a box, or the like, or 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 invention, the metal shell 10 is arranged on the device, the radio frequency antenna uses the metal shell 10 as a back plate to prevent or reduce the interference of external electromagnetic waves, preferably, the metal shell 10 covers the surface of the device, although the outer surface of the device can be partially provided with the metal shell 10, the area of the metal shell 10 is larger than or far larger than that of the substrate of the radio frequency antenna plate.

Referring to fig. 1 to 3, the present invention provides a device 100 with a metal housing, where the device 100 with the metal housing includes a metal housing 10 and a radio frequency antenna plate 20, a receiving space is configured in the metal housing 10, the radio frequency antenna plate 20 includes a substrate and a radio frequency antenna, a metal layer is disposed on one surface of the substrate, the radio frequency antenna is disposed on the other surface of the substrate away from the metal layer, the maximum thickness of the substrate is a, 1.0mm is not less than a, and not more than 100mm, the radio frequency antenna plate 20 is installed in the metal housing 10, the thickness a of the substrate may 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, 30.30 mm, 30mm, 3mm, 50mm, 60mm, 70mm, 80mm, etc., which are not listed.

One surface of the substrate, on which the metal layer is laid, is close to the metal shell 10, the other surface of the substrate, on which the radio-frequency antenna is laid, is arranged away from the metal shell 10, 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 22 and an ultrahigh frequency RFID antenna 23, 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 present invention, the device 100 with a metal housing is provided with a metal housing for installing the rf antenna board 20, such as the installation location 11 shown in fig. 1, of course, the installation location 11 may be provided at any position of the metal housing according to the use requirement, such as the top end, the side surface, etc. of the device 100 with a metal housing, the metal housing has a shielding effect on the external electromagnetic waves, so as to reduce or reduce the interference effect of the external electromagnetic waves on the rf antenna board 20, thereby enhancing the effect of receiving/transmitting the rf signals by the high frequency RFID antenna and the uhf RFID antenna. The rf antenna board 20 may be accommodated in a housing structure, and then installed in the installation site 11 or other installation sites of the device 100 having a metal housing through the housing, where the installation site may be disposed in the metal housing 10 in a protruding manner or in a recessed manner. The connection can be realized by screw threads such as screws, nuts and the like, and other connection modes can also be adopted.

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 electric connection in the invention means that the access point mechanical structures of the circuits are directly touched to enable the circuits to be communicated.

The metal layer is provided with a conductive part, the conductive part is exposed on the surface of the substrate, the conductive part is used for being electrically connected with one access point of the ultrahigh frequency external circuit adapted to the ultrahigh frequency RFID antenna, and the other access point of the ultrahigh frequency external circuit is electrically connected with the ultrahigh frequency feed part.

The rf antenna board 20 further includes a cover film (not shown), one surface of the substrate on which the metal layer is disposed and the other surface of the substrate away from the metal layer except for the feeding portion are covered with the cover film (not shown). The ultrahigh frequency external circuit comprises a radio frequency IC chip adapted to the ultrahigh frequency RFID antenna and other electronic elements such as a resistor, a capacitor, an adjusting element and the like. When the reading and writing equipment adapted to the ultrahigh frequency RFID antenna reads and writes, the radio frequency IC chip can be identified. The cover film does not cover the conductive part, the conductive part and the ultrahigh frequency feed part are arranged at a distance of 0.25mm, and the distance between the conductive part and the ultrahigh frequency feed part is any value between 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 and 3.12 mm. The ultrahigh frequency feed part and the conductive part are arranged close to each other so as to be conveniently connected with a circuit, and the welding and gluing processes are carried out together. The two high-frequency feeding portions with metal layers on the substrate may also be arranged in the same way, and the example is not given here.

In the present invention, the rf antenna board 20 can be directly installed on the metal casing 10 of the device 100 having the metal casing, the surface of the metal casing 10 is recessed with an antenna slot, the rf antenna board 20 is accommodated in the antenna slot, and the side of the substrate where the metal layer is laid faces the bottom wall of the antenna slot. Radio frequency antenna board 20 can be installed in the antenna inslot through connection methods such as block connection, spiro union, interference fit connection, cementing, if the protruding block portion that is equipped with of antenna inslot lateral wall, radio frequency antenna board 20 slides the block portion and lies in between the diapire of block portion and antenna groove, and block portion carries out spacing fixed with radio frequency antenna board 20, and other connection methods do not carry out the one-by-one and prescribe a limit.

The antenna slot top also can be equipped with the upper cover, and the upper cover covers the opening in the antenna slot at least, and the upper cover covers and is insulating material in the part of antenna slot opening, and insulating material includes plastics. 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. It is understood that the surface of the metal casing 10 may also be provided with an antenna slot, the rf antenna board 20 is accommodated in the antenna slot, and the side of the substrate on which the metal layer is laid faces the bottom wall of the antenna slot. An upper cover can be arranged above the antenna slot and at least covers the opening of the antenna slot, and the part of the upper cover covering the opening of the antenna slot is made of insulating materials.

Wherein, the upper cover can be connected with the antenna slot through connection modes such as block connection, spiro union, interference fit connection, cementing for radio frequency antenna board 20 is located between the diapire of upper cover and antenna slot. The insulating material of upper cover is favorable to the radio frequency antenna to receive the transmission radio frequency signal, and upper cover and antenna groove play the guard action to radio frequency antenna board 20 simultaneously, avoid external environment to its influence, like the higher air of external humidity etc. on the other hand makes whole clean and tidy pleasing to the eye, uses extensively simple to operate. 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.

Wherein, a structure of the radio frequency antenna plate, an anti-interference structure is introduced below through a specific radio frequency antenna plate 20, the anti-interference antenna plate comprises a substrate 21, radio frequency antenna and cover membrane, the metal level has been laid to the one side of base plate, radio frequency antenna includes high frequency RFID antenna 22 and hyperfrequency RFID antenna 23, high frequency RFID antenna 22 and hyperfrequency RFID antenna 23 are laid in the other side that the base plate deviates from the metal level, high frequency RFID antenna 22 is the slice setting, hyperfrequency RFID antenna 23 is the slice setting, high frequency RFID antenna 22 forms five at least coils and paves in the base plate, hyperfrequency RFID antenna 23 is closed square frame, square frame has inward flange and outward flange, two extension sections extend downwards along the outward flange in the relative both sides of square frame, the outward flange that square frame is located between two extension sections extends the linkage segment, the free end and the feed portion electricity of linkage segment are connected, hyperfrequency RFID antenna 23 is located the loop that high frequency RFID antenna 22 formed and is. The two high-frequency feeding portions are exposed on one surface of the substrate with the metal layer, one ultrahigh-frequency feeding portion is exposed on one surface of the substrate with the metal layer, 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 23, 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 has one side of a radio frequency antenna facing or abutting against the bottom wall of the antenna mounting groove, the upper cover is arranged in the metal shell, two leads of an external ultrahigh frequency circuit and two leads 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 circuit mounting 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.

In the present invention, the rf antenna plate 20 may also be installed on the metal casing 10 through an installation component, the rf antenna plate 20 is installed on the installation component, the installation component is configured with an installation groove, the bottom wall of the installation groove is made of metal material, the rf antenna plate 20 is installed in the installation groove, the side of the substrate where the metal layer is laid faces the bottom wall of the installation groove, and the side of the installation component away from the installation groove is connected to the metal casing 10. The mounting member may be a locking device, or may be other components, devices, apparatuses, parts, etc. The radio frequency circuitry connected to the radio frequency antenna may be located within the mounting member or within the device. The mounting may be connected to the metal housing 10 of the device by a snap connection, a screw connection, an interference fit connection, an adhesive connection, or the like.

Referring to fig. 3, in an embodiment of the present invention, the mounting member may be an outer housing 40 and an inner housing 30 that are fastened to each other, a first receiving groove is formed in the outer housing 40, a bottom wall of at least the first receiving groove is made of an insulating material, a second receiving groove is formed in the inner housing 30, a bottom wall of at least the second receiving groove is made of a metal material, the inner housing 30 is received in the first receiving groove, a limiting structure (not labeled) is disposed on an inner wall of the first receiving groove and is matched with the inner housing 30, so that a receiving space (not labeled) is formed between the bottom wall of the first receiving groove and the bottom wall of the second receiving groove, the rf antenna board 20 is disposed in the receiving space, and a surface of the substrate on. At least one jack 32 has been seted up to the diapire of second holding tank, and the access point of external circuit passes jack 32 and is connected with the feed portion electricity, and when the external high frequency circuit who matches with the high frequency RFID antenna switches on, the electromagnetic wave can be received and dispatched to the high frequency RFID antenna, and when the external hyperfrequency circuit who matches with the hyperfrequency RFID antenna switches on, the electromagnetic wave can be received and dispatched by the hyperfrequency RFID antenna. 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 32 to be electrically connected with the feeding portion, the external circuit work is achieved, the jack 32 facilitates connection of lines, the internal structure design is simplified, excessive and disordered inner wall lines are avoided, and meanwhile materials are saved. The number of the insertion holes 32 may be one, two or more, the insertion holes 32 may be circular, square, triangular, prismatic, irregular, etc., the insertion holes 32 are located in the middle of the bottom wall of the second receiving groove, and the insertion holes 32 may be located on both sides, preferably, the insertion holes 32 are opposite to the power feeding portion. The insertion hole 32 can occupy one-half area, one-third area, etc. of the bottom wall of the second accommodating groove, and the size is set according to the design requirement, and in the present invention, the size is not strictly defined. 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 30 is provided with a limiting hole 31 matched with the inner shell, and one limiting column is inserted into one limiting hole 31. Wherein, spacing post makes to be formed with the accommodation space that is used for laying radio frequency antenna board 20 between the diapire of shell body 40 and the diapire of interior casing 30, and the quantity of spacing post can be one, two or more than two, if be equipped with four spacing posts, and the inner wall of first holding tank is located all around to four spacing posts for interior casing 30 atress is even, strengthens the stability of the relative position relation of shell body 40 and interior casing 30. Spacing post and the mode that spacing hole 31 cooperation is connected, the position of the casing 30 in the further fixed prevents that the casing 30 from rocking in first holding tank, further strengthens the stability of the relative position relation of outer casing 40 and casing 30. At least one connecting column is arranged in the second accommodating groove along the groove depth direction, the connecting column is far away from an internal threaded hole in one end of the bottom wall of the second accommodating groove, the connecting column is close to an internal limiting hole 31 in one end of the bottom wall of the second accommodating groove, a threaded hole (not marked) is communicated with the limiting hole 31, the maximum diameter size of the threaded hole (not marked) is smaller than the minimum diameter size of the limiting hole 31, the inner wall of the threaded hole is provided with threads, 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 threaded hole.

Wherein, a screw bolt advances the screw hole of a spliced pole to rather than the screw hole of a spacing post that corresponds for shell body 40 and interior casing 30 relative position are fixed, and overall structure's stability is strengthened to this kind of design, make shell body 40 and interior casing 30 separation to avoid receiving external striking or other external forces.

Furthermore, 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 31 along the axial direction, and when one limiting column is inserted into one limiting hole 31, the joint of the limiting column and the groove wall of the second accommodating groove is limited in the opening.

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

Furthermore, at least one first protruding rib (not marked) arranged transversely is arranged on the inner side wall of the first accommodating groove in a protruding mode, after the inner shell 30 is installed on the outer shell 40, the outer side wall of the inner shell 30 is in contact with the inner side wall of the first accommodating groove, and the first protruding rib protrudes out of the free end, far away from the bottom wall, of the side wall of the second accommodating groove;

and/or, the inside wall of first holding tank has seted up the block hole, and the lateral wall of interior casing 30 corresponds and is equipped with the protruding muscle of second, and interior casing 30 installs in shell body 40 back, and the lateral wall of interior casing 30 touches the inside wall of first holding tank, and a protruding muscle of second inserts a block hole.

Wherein, the installed part is through first protruding muscle, and/or the setting of the protruding muscle of second for whether interior casing 30 installs and can judge through macro and feel in the outer casing 40 and connect in place, be convenient for simultaneously interior casing 30 and outer casing 40 threaded connection. The length direction of first protruding muscle is along the horizontal setting of shell body 40, and shell body 40 is vertical along the direction of spacing post, and is horizontal with what be vertical vertically direction, and/or the length direction of second protruding muscle is along the horizontal setting of shell body 40, and shell body 40 is vertical along the direction of spacing post, and is horizontal with what be vertical vertically direction. The shape of the first ribs and/or the second ribs is preferably a long strip, so that the clamping strength of the outer shell 40 and the inner shell 30 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 convex ribs corresponds to the number of the clamping holes.

In another embodiment of the present invention, as shown in fig. 4, the mounting member 30 may also be a structure having an antenna slot 31 for mounting the rf antenna board 20, and one side of the substrate having the metal layer faces or abuts against a bottom wall of the antenna slot 31. An upper cover 40 may also be disposed above the antenna slot 31, the upper cover 40 at least covers the opening of the antenna slot 31, and a portion of the upper cover 40 covering the opening of the antenna slot 31 is made of an insulating material, and the insulating material includes plastic. The upper cover 40 may be connected to the antenna slot 31 by a snap connection, a screw connection, an interference fit connection, an adhesive connection, or the like, so that the rf antenna board 20 is located between the upper cover 40 and the bottom wall of the antenna slot 31. The insulating material of upper cover 40 is favorable to the radio frequency antenna to receive the transmission radio frequency signal, and upper cover 40 and antenna groove 31 play the guard action to radio frequency antenna board 20 simultaneously, avoid external environment to its influence, like the higher air of external humidity etc. on the other hand makes whole clean and tidy pleasing to the eye, and is used extensively simple to operate.

Further, one side of the mounting member 30, which is away from the mounting groove, is configured with a receiving groove, and the bottom wall of the receiving groove is provided with a jack 311, so that the receiving groove and the mounting groove are communicated.

The access point of the radio frequency circuit in the device is electrically connected with the feeding portion through a lead or a feeder, the lead or the feeder penetrates through the jack 311 to be electrically connected with the feeding portion, the work of the external radio frequency circuit is achieved, the jack 311 facilitates the connection of circuits, the internal structure design is simplified, the situation that the inner wall circuits are too many and are disordered is avoided, and meanwhile materials are saved. The number of the insertion holes 311 can be one, two or more, the insertion holes 311 can be circular, square, triangular, prismatic, irregular and the like, the insertion holes 311 are positioned in the middle of the bottom wall of the antenna mounting groove, the sides of the bottom wall can be all the same, and preferably, the insertion holes 311 are opposite to the feeding portion. The insertion hole 311 may occupy one-half area, one-third area, etc. of the bottom wall of the antenna mounting groove, and the size is set according to design requirements, and in the present invention, it is not strictly defined.

Specifically, the rf antenna board 20 is detachably connected to the surface of the mounting member 30, and the detachable connection includes a screw connection, a plug connection, a snap connection, and the like.

Specifically, the material of the substrate includes any one of a glass fiber material, an FR4 antenna board material, and a circuit board material, and the material of the metal layer is a metal.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by 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 apparatus having a metal housing, comprising:

a metal housing configured with a receiving space therein; and

the radio frequency antenna plate comprises a substrate and a radio frequency antenna, wherein a metal layer is laid on one surface of the substrate, the radio frequency antenna is laid 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 not less than 1.0mm and not more than 100mm, and the radio frequency antenna plate is arranged on the metal shell;

2. The device with metal shell as in claim 1,

the metal layer is provided with a conductive part, the conductive part is exposed on the surface of the substrate, the conductive part is used for being electrically connected with one access point of an ultrahigh frequency external circuit adapted to the ultrahigh frequency RFID antenna, and the other access point of the ultrahigh frequency external circuit is electrically connected with the ultrahigh frequency feed part.

3. The apparatus having a metal housing of claim 2, further comprising:

a mount on which the radio frequency antenna plate is disposed, the mount disposed on the metal housing.

4. The device with metal housing of claim 3,

the mounting part is constructed with a mounting groove, the bottom wall of the mounting groove is made of metal, the radio frequency antenna plate is arranged in the mounting groove, one surface of the substrate, on which the metal layer is laid, faces the bottom wall of the mounting groove, and one side of the mounting part, which deviates from the mounting groove, is connected to the metal shell.

5. The device with metal shell as in claim 4,

one side that the installed part deviates from the mounting groove is constructed with the holding tank, the jack has been seted up to the holding tank diapire, makes the holding tank with the mounting groove communicates with each other.

6. The apparatus having a metal housing of claim 4, further comprising:

the upper cover at least covers the opening of the mounting groove, the part of the upper cover covering the opening of the mounting groove is made of insulating materials, and the insulating materials comprise plastics.

7. The device with metal housing of claim 3,

the radio frequency antenna plate is detachably connected to the surface of the mounting part, and the detachable connection comprises a screw joint, an insertion connection, a buckle connection and the like.

8. The device with metal shell as in claim 1,

the surface of the metal shell is concavely provided with an antenna slot, the radio frequency antenna board is accommodated in the antenna slot, and one side of the substrate, on which the metal layer is laid, faces the bottom wall of the antenna slot.

9. The device with metal housing according to any one of claims 1 to 8,

the material of base plate includes any one of glass fiber material, FR4 antenna panel material and circuit board material, the material of metal level is the metal.

10. The device with metal shell as in claim 9,

the device with the metal shell can be a box, or a cabinet, or a box.