A detachable RFID antenna structure

Abstract

The present invention relates to the technical field of RFID external antennas, and specifically to a detachable RFID antenna structure, including: a positioning mechanism is provided on the antenna housing, a quick-installation mechanism is provided at the rear of the positioning mechanism, and a receiving mechanism is provided on the quick-installation mechanism; through the positioning mechanism of the present invention, an adaptive fastening structure can be used to replace most of the screws, significantly reducing the number of screws between the backplane and the antenna housing, so that the assembly process of the RFID external antenna can be significantly simplified on the premise of ensuring the installation stability of the backplane; through the cooperation of the quick-installation mechanism and the receiving mechanism of the present invention, the installation method of traditional studs and nuts can be replaced by a quick-installation structure, enabling the RFID external antenna to be quickly docked and separated from the installation base, so that the operator does not need to screw the nuts one by one to complete tightening or disassembly, significantly shortening the disassembly and assembly time and reducing the complexity of the overall operation, and the quick-installation structure can also be adapted to various installation scenarios such as a pole mount base and a pitch adjustment base at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of RFID external antennas, and specifically to a detachable RFID antenna structure. Background Art

[0002] RFID, also known as radio frequency identification, is a technology for non-contact data collection and identification using radio waves. It can automatically identify target objects through wireless signals and obtain relevant data. An RFID external antenna is an antenna component independent of the reader or tag body, mainly used to enhance the quality of wireless signal transmission, expand the communication distance, or adapt to special installation environments. An RFID external antenna usually consists of an antenna body installed inside an antenna housing and a back plate installed on the back of the antenna housing to cooperate with the antenna housing to protect the antenna body, and the back plate is generally also used for docking and installation with an external installation platform.

[0003] In the prior art, the back plate of an RFID external antenna is usually stably installed on the antenna housing through a plurality of screws, and different back plates can be respectively matched with different installation bases or installation methods. For example: a back plate with multiple studs on the back can be matched and installed with a pole mount or a pitch adjustment mount, while a back plate integrated with lugs or a magnetic attraction structure on the back can be quickly installed on a smart cabinet by bolt tightening or direct magnetic attraction respectively.

[0004] However, the disassembly and assembly methods of the traditional RFID external antenna back plate and the disassembly and assembly methods of the back plate and the installation base have the following problems: 1. In the prior art, although the method of installing and fixing the back plate of the RFID external antenna to the antenna housing through multiple screws can ensure the overall structure is stable, since a relatively large number of screws need to be tightened one by one, the steps for assembling or replacing the back plate are cumbersome, time-consuming, and inefficient. Moreover, the flexibility of the RFID external antenna to adapt to different installation bases or installation methods is limited, and at the same time, the overall operation burden of the operator is increased; 2. When overhauling or replacing the internal antenna body, the back plate needs to be completely removed, resulting in cumbersome overall overhaul operations and low overhaul efficiency, and the convenience of overall maintenance and overhaul of the RFID external antenna is poor, affecting the normal operation efficiency of the RFID external antenna; 3. When the back plate of the RFID external antenna is fixed to the installation base through stud nuts, it is necessary to screw the nuts one by one to complete tightening or disassembly. Not only are the operation steps redundant, but when it is necessary to replace the installation base of the RFID external antenna, the stud assembly needs to be repeatedly disassembled and assembled, significantly reducing the flexibility of scenario adaptation. At the same time, if the antenna body needs to be overhauled, it is necessary to successively remove the installation of the installation base and the back plate and the back plate and the antenna housing, further increasing the overall operation burden of the operator and further weakening the convenience of maintaining the RFID external antenna, and also causing thread wear or accessory loss due to repeated disassembly and assembly of the studs. Summary of the Invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a detachable RFID antenna structure, comprising an antenna shell, a positioning mechanism is arranged on the antenna shell, a quick-installation mechanism is arranged on the rear side of the positioning mechanism, and a receiving mechanism is arranged on the quick-installation mechanism.

[0006] The positioning mechanism includes an alignment installation part arranged inside the antenna shell, a back plate is arranged on the rear side of the alignment installation part, a fastening part is arranged on the back plate and cooperates with the alignment installation part to fasten the back plate, and a driven locking part is commonly arranged on the back plate and the fastening part and is adaptively locked with the alignment installation part.

[0007] The quick-install mechanism comprises a pressing docking portion arranged at the rear side of the back plate, the pressing docking portion is provided with a locking positioning portion for docking and locking, and the pressing docking portion and the locking positioning portion are jointly provided with a quick-installing portion.

[0008] The receiving mechanism comprises a mounting frame for cooperating with the quick-install part for quick assembly and disassembly.

[0009] Preferably, the alignment mounting portion includes a circular mounting platform fixedly arranged inside the antenna shell, threaded holes penetrating the rear end are provided at the four corners of the circular mounting platform, a plurality of locking sleeves are evenly arranged on the circular mounting platform, a positioning groove 1 penetrating the rear end is provided in the locking sleeve 1, the positioning groove 1 is composed of a locking groove 1 and a socket 1 distributed front and back, wherein the connection between the locking groove 1 and the socket 1 is a slope.

[0010] Preferably, the fastening portion includes a return groove opened on the rear side of the back plate, in which a return positioning plate that can move forward and backward is slidably arranged, and alignment holes that pass through the front and back and correspond to the threaded holes are jointly opened at the four corners of the return positioning plate and the back plate, and screws are jointly installed in the alignment holes and the corresponding threaded holes.

[0011] Preferably, the driven locking portion includes a plurality of sleeves 1 uniformly and fixedly arranged on the front side of the back plate, the sleeves 1 are correspondingly and cooperatively plugged into the positioning grooves 1, the sleeves 1 and the back plate are jointly provided with a slide groove 1 which passes through the rear end, a plurality of ball grooves 1 which pass through the inside and outside are uniformly and circumferentially arranged on the sleeves 1, a positioning ball 1 is rollingly arranged in the ball grooves 1, a plurality of clamping columns which slide and cooperate with the slide grooves 1 are uniformly and fixedly arranged on the front side of the return-shaped positioning plate, the front end of the clamping columns is a conical surface which cooperates and presses against the corresponding positioning ball 1, and the front side of the clamping columns is elastically connected to the slide groove 1 through a return spring.

[0012] Preferably, the pressing docking part includes a U-shaped fixed platform installed on the rear side of the back plate and opening toward the rear, two groups of sliding shafts are symmetrically fixed on the U-shaped fixed platform, each group is composed of a sliding shaft symmetrical in the upper and lower parts, and a docking hole that passes through the left and right sides is opened on the left and right symmetrical horizontal sections of the U-shaped fixed platform.

[0013] Preferably, the locking and positioning part includes a U-shaped moving table slidably arranged on the U-shaped fixing table and opening forward. Two groups of linearly through slots that penetrate left and right are symmetrically arranged on the left and right of the U-shaped moving table. Each group is composed of linearly through slots that are symmetrically arranged up and down and extend forward and backward. The linearly through slots are correspondingly and slidably connected with the first sliding shafts. Pressing plates are symmetrically and fixedly arranged on the left and right of the U-shaped moving table. On the left and right symmetrical horizontal sections of the U-shaped moving table, linearly through butt-joint holes two that are aligned with the butt-joint holes one are opened. A plug pin is commonly inserted into the butt-joint hole two and the butt-joint hole one. A nut one is threadedly connected to the left end of the plug pin.

[0014] Preferably, the quick installation part includes a plurality of second socket sleeves uniformly and fixedly arranged at the rear side of the U-shaped moving table. A second sliding slot that penetrates forward and backward is commonly opened on the U-shaped moving table and the second socket sleeves. A plurality of internally and externally through second ball grooves are circumferentially and uniformly arranged on the second socket sleeves. Second positioning balls are rollably arranged in the second ball grooves. A plurality of spring rods that are elastically and slidably matched with the second sliding slot are uniformly and fixedly arranged at the rear side of the U-shaped fixing table. A pressing column is fixedly arranged at the rear end of the spring rod through a connecting rod. The front end of the pressing column is a conical surface that is matched with the corresponding second positioning ball for pressing.

[0015] Preferably, the mounting bracket includes a positioning base plate. A plurality of second locking sleeves corresponding to the second socket sleeves are uniformly and fixedly arranged on the positioning base plate. A second positioning slot that penetrates forward and backward and is inserted and matched with the corresponding second socket sleeve is opened on the second locking sleeve. The second positioning slot is composed of a second socket and a second locking slot that are distributed front and back. The connection part between the second socket and the second locking slot is an inclined surface.

[0016] Preferably, the receiving mechanism further includes a pole mounting part for mounting on a vertical pole. The pole mounting part includes a mounting plate. A mounting bracket is fixedly arranged on the left side of the front end of the mounting plate. Two groups of linearly through mounting holes that penetrate left and right are symmetrically arranged on the upper and lower sides of the mounting plate. Each group is composed of front and back symmetric mounting holes. A U-shaped locking hoop with an opening to the left is commonly mounted on each group of mounting holes. The left and right symmetrical vertical sections of the U-shaped locking hoop are respectively slidably inserted into the corresponding mounting holes. A nut two is threadedly connected to the left end of the vertical section of the U-shaped locking hoop.

[0017] Preferably, the receiving mechanism further includes a pitching mounting part for performing pitching adjustment. The pitching mounting part includes a U-shaped adjusting frame. Arc-shaped slots that penetrate left and right are symmetrically arranged on the left and right of the U-shaped adjusting frame. Adjusting plates are symmetrically and rotatably arranged on the inner side of the U-shaped frame. Second sliding shafts that are slidably connected with the corresponding arc-shaped slots are fixedly arranged on the opposite sides of the left and right symmetrical adjusting plates. A nut three is threadedly connected to the end of the second sliding shaft away from the corresponding adjusting plate. A mounting bracket is commonly fixedly arranged between the left and right symmetrical adjusting plates.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The present invention uses a positioning mechanism to replace most of the screws with an adaptive fastening structure, greatly reducing the number of screws between the back plate and the antenna housing, thereby significantly simplifying the assembly process of the RFID external antenna while ensuring the stability of the back plate installation, shortening the overall assembly time, improving the assembly efficiency, and reducing the workload of operators, and significantly improving the flexibility of the RFID external antenna to adapt to different mounting bases and installation methods. At the same time, it also greatly improves the convenience of overall maintenance and repair of the RFID external antenna, ensuring the normal operating efficiency of the RFID external antenna.

[0020] 2. The present invention can replace the traditional stud nut installation method with the quick-install structure through the cooperation of the quick-install mechanism and the receiving mechanism, so that the RFID external antenna can be quickly docked and separated from the installation base, so that the operator does not need to screw the nuts one by one to complete the tightening or disassembly, which greatly shortens the disassembly time and reduces the complexity of the overall operation. The quick-install structure can also be adapted to various installation scenarios such as the pole base or the pitch adjustment base, which significantly improves the flexibility and efficiency of the RFID external antenna installation scenario adaptation. At the same time, it also significantly improves the efficiency and convenience of the maintenance and overhaul of the RFID external antenna, and reduces the overall burden of the maintenance and overhaul of the RFID external antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the partial structure of the positioning mechanism.

[0023] Figure 3 It is a partial cross-sectional schematic diagram of the positioning mechanism structure.

[0024] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0025] Figure 5 It is a partial cross-sectional schematic diagram of the quick-loading mechanism structure.

[0026] Figure 6 It is a partial cross-sectional schematic diagram of the structure of the undertaking mechanism.

[0027] Figure 7 for Figure 6 Enlarged schematic diagram of point B in the middle.

[0028] Figure 8 It is a partial cross-sectional diagram of the structure of the pole mounting part.

[0029] Figure 9 It is a partial cross-sectional schematic diagram of the pitch mounting part structure.

[0030] Figure 10This is a schematic diagram of the structure of a magnetically mounted RFID external antenna.

[0031] Figure 11 This is a schematic diagram of the ear-mounted RFID external antenna structure.

[0032] In the figure: 1, antenna housing; 2, positioning mechanism; 21, alignment mounting portion; 211, return mounting platform; 212, locking sleeve 1; 213, positioning groove 1; 22, back plate; 23, fastening portion; 231, return positioning plate; 232, screw; 24, driven locking portion; 241, insert sleeve 1; 242, positioning ball 1; 243, tightening column; 3, quick-install mechanism; 31, pressing docking portion; 311, U-shaped fixing platform; 312, sliding shaft 1; 32, locking positioning portion; 321, U-shaped shift Moving table; 322, pressing plate; 323, latch; 33, quick-release part; 331, plug sleeve 2; 332, positioning ball 2; 333, spring rod; 334, clamping column; 4, receiving mechanism; 41, mounting frame; 411, positioning base plate; 412, locking sleeve 2; 413, positioning groove 2; 42, pole mounting part; 421, mounting plate; 422, U-shaped locking hoop; 43, pitch mounting part; 431, U-shaped adjustment frame; 432, arc groove; 433, adjustment plate; 434, sliding shaft 2. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1 A detachable RFID antenna structure comprises an antenna housing 1, a positioning mechanism 2 is arranged on the antenna housing 1, a quick-installation mechanism 3 is arranged on the rear side of the positioning mechanism 2, and a receiving mechanism 4 is arranged on the quick-installation mechanism 3.

[0035] See also Figure 1 , Figure 2 and Figure 3 The positioning mechanism 2 includes an alignment mounting portion 21 arranged inside the antenna housing 1, a back plate 22 is arranged on the rear side of the alignment mounting portion 21, a fastening portion 23 is arranged on the back plate 22 for fastening the back plate 22 in cooperation with the alignment mounting portion 21, and a driven locking portion 24 is jointly arranged on the back plate 22 and the fastening portion 23 for adaptively locking with the alignment mounting portion 21.

[0036] See also Figure 1 and Figure 2, the alignment mounting portion 21 includes a U-shaped mounting table 211 fixedly provided inside the antenna housing 1. Threaded holes that penetrate through the rear end are provided at the four corners of the U-shaped mounting table 211. A plurality of first locking sleeves 212 are evenly arranged on the U-shaped mounting table 211. A first positioning groove 213 that penetrates through the rear end is provided inside the first locking sleeve 212. The first positioning groove 213 is composed of a first locking groove and a first socket that are distributed front and rear. The connection between the first locking groove and the first socket is a bevel surface.

[0037] Please refer to Figure 1 and Figure 3 , the fastening portion 23 includes a U-shaped groove provided at the rear side of the back plate 22. A U-shaped positioning plate 231 that moves back and forth is slidably arranged in the U-shaped groove. Alignment holes that penetrate through the front and rear and correspond to the threaded holes are commonly provided at the four corners of the U-shaped positioning plate 231 and on the back plate 22. Screws 232 are commonly installed in the alignment holes and the corresponding threaded holes.

[0038] Please refer to Figure 3 and Figure 4 , the driven locking portion 24 includes a plurality of first socket sleeves 241 evenly and fixedly arranged on the front side of the back plate 22. The first socket sleeves 241 are correspondingly and slidably inserted into the first positioning grooves 213. A first sliding groove that penetrates through the rear end is commonly provided on the first socket sleeves 241 and the back plate 22. A plurality of first ball grooves that penetrate through the inside and outside are circumferentially and evenly provided on the first socket sleeves 241. First positioning balls 242 are rotatably arranged in the first ball grooves. A plurality of pressing columns 243 that are correspondingly and slidably matched with the first sliding grooves are evenly and fixedly arranged on the front side of the U-shaped positioning plate 231. The front end of the pressing column 243 is a conical surface that is matched with and presses against the corresponding first positioning balls 242. The front side of the pressing column 243 is elastically connected to the first sliding groove through a return spring.

[0039] Stably and correspondingly insert the first socket sleeves 241 into the corresponding first positioning grooves 213 until the back plate 22 is closely attached to the rear side of the U-shaped mounting table 211, and align the alignment holes with the corresponding threaded holes. The first positioning balls 242 are completely retracted into the first ball grooves and the first sliding grooves under the pressing of the corresponding first locking sleeves 212. Then, respectively and correspondingly fasten and install the screws 232 into the corresponding alignment holes and threaded holes, so as to stably fasten the U-shaped positioning plate 231 in the U-shaped groove, and stably install the four corners of the back plate 22 with the U-shaped mounting table 211.

[0040] During the process of fastening the U-shaped positioning plate 231 in the U-shaped groove by the screw 232, the U-shaped positioning plate 231 drives the abutting column 243 to move forward synchronously along the corresponding sliding groove. Then, the abutting column 243 extrudes the positioning ball 242 that is completely received in the ball groove 242 and the sliding groove 242 into the positioning groove 213 through the conical surface at the front end. Subsequently, the positioning ball 242 contacts the inclined surface at the junction of the locking groove 213 and the socket 213 until the U-shaped positioning plate 231 is completely fastened. At this time, under the action of the conical surface at the front end of the abutting column 243, the positioning ball 242 is stably fitted and clamped on the inclined surface at the junction of the locking groove 213 and the socket 213. Thus, the socket 241 and the back plate 22 are stably fastened to the locking sleeve 212 and the U-shaped mounting table 211 through the positioning ball 242. When the screws 232 used to fasten the four corners of the U-shaped positioning plate 231 and the back plate 22 are removed, the return spring drives the abutting column 243 and the U-shaped positioning plate 231 to move backward. At this time, the positioning ball 242 that is not locked by the abutting column 243 can be completely received in the ball groove 242 and the sliding groove 242 again under the extrusion of the inclined surface at the junction of the locking groove 213 and the socket 213. Therefore, the back plate 22 can be stably removed from the U-shaped mounting table 211.

[0041] The above operation method can realize replacing most of the screws 232 with an adaptive fastening structure, significantly reducing the number of screws 232 between the back plate 22 and the antenna housing 1. Thus, on the premise of ensuring the installation stability of the back plate 22, the assembly process of the RFID external antenna can be significantly simplified, and the convenience rate of overall maintenance and repair of the RFID external antenna is also greatly improved.

[0042] Please refer to Figure 1 , the quick installation mechanism 3 includes a pressing and docking part 31 arranged at the rear side of the back plate 22. A locking and positioning part 32 for docking and locking is arranged on the pressing and docking part 31. A quick installation part 33 is jointly arranged on the pressing and docking part 31 and the locking and positioning part 32.

[0043] Please refer to Figure 1 , Figure 5 and Figure 6 , the pressing and docking part 31 includes a U-shaped fixing table 311 installed at the rear side of the back plate 22 with an opening facing backward. Two groups of sliding shafts 312 are symmetrically fixed on the left and right sides of the U-shaped fixing table 311. Each group consists of two symmetrically arranged sliding shafts 312 up and down. Docking holes 313 that penetrate from left to right are opened on the left and right symmetric horizontal sections of the U-shaped fixing table 311.

[0044] Please refer to Figure 5 and Figure 6, the locking and positioning part 32 includes a U-shaped moving platform 321 that is slidably arranged on the U-shaped fixing platform 311 and has an opening facing forward. Two groups of linearly through slots that penetrate left and right are symmetrically arranged on the left and right of the U-shaped moving platform 321. Each group consists of linearly through slots that are symmetrically arranged up and down and extend forward and backward. The linearly through slots are correspondingly slidably connected to the first sliding shaft 312. Pressing plates 322 are symmetrically and fixedly arranged on the left and right of the U-shaped moving platform 321. On the left and right symmetric horizontal sections of the U-shaped moving platform 321, second docking holes that penetrate left and right and are aligned with the first docking holes are provided. A plug pin 323 is commonly inserted into the second docking holes and the first docking holes, and a first nut is threadedly connected to the left end of the plug pin 323.

[0045] First, align the corresponding first docking holes on the U-shaped fixing platform 311 and the U-shaped moving platform 321, then align and insert the plug pin 323 into all the first docking holes and the second docking holes, and threadedly install the first nut on the left end of the plug pin 323, so as to stably lock the U-shaped moving platform 321 and the U-shaped fixing platform 311 through the plug pin 323 and prevent them from moving relative to each other front and back.

[0046] Please refer to Figure 5 、 Figure 6 and Figure 7 , the quick installation part 33 includes a plurality of second socket sleeves 331 that are uniformly and fixedly arranged on the rear side of the U-shaped moving platform 321. A second sliding slot that penetrates front and back is commonly provided on the U-shaped moving platform 321 and the second socket sleeves 331. A plurality of internally and externally through ball grooves two are circumferentially and uniformly provided on the second socket sleeves 331. Positioning balls two 332 are rotatably arranged in the ball grooves two. A plurality of spring rods 333 that are elastically slidably matched with the second sliding slot are uniformly and fixedly arranged on the rear side of the U-shaped fixing platform 311. A pressing column 334 is fixedly arranged at the rear end of the spring rod 333 through a connecting rod. The front end of the pressing column 334 is a conical surface that cooperates with the corresponding positioning balls two 332 for pressing.

[0047] Please refer to Figure 1 、 Figure 8 and Figure 9 , the receiving mechanism 4 includes a mounting bracket 41 for cooperating with the quick installation part 33 for quick disassembly and assembly.

[0048] Please refer to Figure 1 、 Figure 6 and Figure 7 , the mounting bracket 41 includes a positioning base plate 411. A plurality of second locking sleeves 412 corresponding to the second socket sleeves 331 are uniformly and fixedly arranged on the positioning base plate 411. A second positioning slot that penetrates front and back and is inserted and matched with the corresponding second socket sleeve 331 is provided on the second locking sleeve 412. The second positioning slot is composed of a second socket and a second locking slot that are distributed front and back, and the connection part between the second socket and the second locking slot is an inclined surface.

[0049] When the RFID external antenna is to be installed on the mounting bracket 41, first press the pressing plate 322 to drive the U-shaped moving platform 321 to move forward. The U-shaped fixed platform 311 and the first sliding shaft 312 then move forward and backward relative to the corresponding linear grooves on the U-shaped moving frame. The spring rod 333 then drives the pressing column 334 to move backward along the second sliding groove in the corresponding second socket 331 through the connecting rod until the conical surface at the front end of the pressing column 334 is completely separated from the corresponding second positioning ball 332, and the second positioning ball 332 can be completely received into the corresponding second ball groove and the second sliding groove.

[0050] Then, stably align and insert the second socket 331 into the corresponding second positioning groove 413 until the U-shaped moving platform 321 is closely attached to the front side of the positioning substrate 411. The second positioning ball 332 is then completely received into the second ball groove and the second sliding groove under the pressing of the corresponding second locking sleeve 412. At this time, release the pressing plate 322. Under the elastic action of the spring rod 333, the U-shaped fixed platform 311 then drives the first sliding shaft 312 to move forward and reset along the linear groove. The spring rod 333 then drives the pressing column 334 to move forward along the second sliding groove through the connecting rod. The pressing column 334 then squeezes the second positioning ball 332 into the second positioning groove 413 through the conical surface at the front end until the second positioning ball 332 is locked and closely attached to the inclined surface at the junction of the second socket and the second locking groove. Finally, insert and lock the pin 323 into the first docking hole and the second docking hole, so that the U-shaped fixed platform 311 and the spring rod 333 cannot move relative to the U-shaped moving platform 321 and the second socket 331. Thus, the RFID external antenna is quickly and stably installed on the mounting bracket 41 through the locking and positioning of the second positioning ball 332 with the inclined surface at the junction of the second socket and the second locking groove.

[0051] The above operation method can realize replacing the traditional bolt and nut installation method with a quick installation structure, enabling the RFID external antenna to be quickly docked and separated from the mounting bracket 41. Thus, the operator does not need to screw the nuts one by one to complete fastening or disassembly, greatly shortening the disassembly and assembly time and reducing the overall operation complexity. Moreover, the quick installation structure can also be adapted to the pole mounting part 42 or the pitching mounting part 43, significantly improving the flexibility and efficiency of the RFID external antenna installation scenario adaptation. At the same time, it also significantly improves the efficiency and convenience of the RFID external antenna maintenance and repair, reducing the overall burden of the RFID external antenna maintenance and repair.

[0052] Please refer to Figure 8, the receiving mechanism 4 further includes a pole mounting portion 42 for mounting on a vertical pole. The pole mounting portion 42 is disposed on the mounting frame 41. The pole mounting portion 42 includes a mounting plate 421. On the left side of the front end of the mounting plate 421, a mounting frame 41 is fixedly provided. Two groups of left-right through mounting holes are symmetrically opened in the up and down directions on the mounting plate 421. Each group is composed of front-back symmetric mounting holes. A U-shaped locking hoop 422 with an opening facing left is commonly mounted on each group of mounting holes. The left and right symmetric vertical segments of the U-shaped locking hoop 422 are respectively slidably inserted into the corresponding mounting holes. A second nut is threadedly connected to the left end of the vertical segment of the U-shaped locking hoop 422.

[0053] When it is necessary to stably mount the RFID external antenna mounted on the mounting frame 41 on the vertical pole, first put the U-shaped locking hoop 422 on the outside of the vertical pole, and insert the vertical segments of the U-shaped locking hoop 422 into the corresponding mounting holes respectively. Then, screw the second nut onto the left end of the vertical segment of the U-shaped locking hoop 422 until the mounting plate 421 and the U-shaped locking hoop 422 are stably locked and pressed against the vertical pole, so as to stably mount the mounting frame 41 and the RFID external antenna mounted on the mounting frame 41 on the vertical pole.

[0054] Please refer to Figure 9 , the receiving mechanism 4 further includes a pitching mounting portion 43 for pitching adjustment. The pitching mounting portion 43 is disposed on the mounting frame 41. The pitching mounting portion 43 includes a U-shaped adjusting frame 431 with an opening facing forward. Arc-shaped grooves 432 that penetrate left and right are symmetrically opened on the left and right of the U-shaped adjusting frame 431. On the inner side of the U-shaped frame, adjusting plates 433 are symmetrically rotatably provided on the left and right. On the opposite sides of the left and right symmetric adjusting plates 433, second sliding shafts 434 that are slidably connected to the corresponding arc-shaped grooves 432 are fixedly provided. A third nut is threadedly connected to the end of the second sliding shaft 434 away from the corresponding adjusting plate 433. A mounting frame 41 is commonly fixedly provided between the left and right symmetric adjusting plates 433.

[0055] When it is necessary to stably mount the RFID external antenna mounted on the mounting frame 41 on a plane at a specific angle, first fixedly mount the U-shaped adjusting frame 431 to the plane through bolts. Then, make the mounting frame 41 and the RFID external antenna mounted on the mounting frame 41 rotate relative to the U-shaped adjusting frame 431 through the adjusting plate 433. The second sliding shafts 434 slide synchronously along the corresponding arc-shaped grooves 432 until the RFID external antenna is adjusted to the required angle. Finally, screw the third nut onto the third sliding shaft until the third nut locks and positions the adjusting plate 433 and the U-shaped adjusting frame 431 through frictional force and extrusion force, so as to lock the RFID external antenna at the current angle.

[0056] In addition, the present invention can also evenly mount a plurality of cylindrical magnets on the rear side of the back plate 22 (as Figure 10 shown), or mount ear patch pieces that are symmetrically arranged up and down and have through holes on the rear side of the back plate 22 (as Figure 11as shown), to replace the original quick-installation mechanism 3, so that the RFID external antenna can be temporarily installed on the outside of the intelligent cabinet by direct magnetic attraction fixing, to facilitate the temporary emergency operation of the RFID external antenna, or the RFID external antenna can be stably installed inside the intelligent cabinet by bolt fastening, to facilitate the long-term normal operation of the RFID external antenna inside the intelligent cabinet, thereby significantly improving the flexibility of the RFID external antenna to adapt to different installation methods and installation scenarios.

[0057] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detachable RFID antenna structure, comprising an antenna housing, characterized in that: A positioning mechanism is provided on the antenna housing. A quick installation mechanism is provided at the rear side of the positioning mechanism, and a receiving mechanism is provided on the quick installation mechanism; The positioning mechanism includes a counterpoint installation part arranged inside the antenna housing. A back plate is provided at the rear side of the counterpoint installation part. A fastening part for cooperating with the counterpoint installation part to fasten the back plate is provided on the back plate. A driven locking part for adaptively locking and installing with the counterpoint installation part is jointly provided on the back plate and the fastening part; The quick installation mechanism includes a pressing docking part arranged at the rear side of the back plate. A locking and positioning part for docking and locking is provided on the pressing docking part. A quick installation part is jointly provided on the pressing docking part and the locking and positioning part; The receiving mechanism includes a mounting bracket for cooperating with the quick installation part for quick disassembly and assembly; The counterpoint installation part includes a rectangular installation platform fixedly arranged inside the antenna housing. Threaded holes that penetrate through the rear end are respectively opened at the four corners of the rectangular installation platform. A plurality of locking sleeves I are evenly arranged on the rectangular installation platform. A positioning groove I that penetrates through the rear end is opened inside the locking sleeve I. The positioning groove I is composed of a locking groove I and a socket I that are distributed front and back. The connection part between the locking groove I and the socket I is an inclined surface; The fastening part includes a rectangular groove opened at the rear side of the back plate. A rectangular positioning plate that moves back and forth is slidably arranged inside the rectangular groove. Counterpoint holes that penetrate through the front and back and correspond to the threaded holes are jointly opened at the four corners of the rectangular positioning plate and on the back plate. Screws are jointly installed inside the counterpoint holes and the corresponding threaded holes; The driven locking part includes a plurality of plug sleeves I fixedly arranged evenly on the front side of the back plate. The plug sleeves I are correspondingly inserted and matched with the positioning groove I. A sliding groove I that penetrates through the rear end is jointly opened on the plug sleeves I and the back plate. A plurality of ball grooves I that penetrate through the inside and outside are circumferentially and evenly opened on the plug sleeves I. A positioning ball I is rollably arranged inside the ball grooves I. A plurality of abutting columns that are correspondingly slidably matched with the sliding groove I are fixedly arranged evenly on the front side of the rectangular positioning plate. The front end of the abutting column is a conical surface for cooperating with and abutting against the corresponding positioning ball I. The front side of the abutting column is elastically connected with the sliding groove I through a return spring; 2. The detachable RFID antenna structure according to claim 1, wherein: The pressing docking part includes a U-shaped fixing platform installed at the rear side of the back plate and opening backward. Two groups of sliding shafts I are symmetrically and fixedly arranged on the U-shaped fixing platform in the left-right direction. Each group consists of two sliding shafts I that are symmetrically arranged in the up-down direction. Docking holes I that penetrate through the left and right are respectively opened on the left and right symmetric horizontal sections of the U-shaped fixing platform; 3. The detachable RFID antenna structure according to claim 2, characterized in that: The locking and positioning part includes a U-shaped moving platform slidably arranged on the U-shaped fixing platform and opening forward. Two groups of linear grooves that penetrate through the left and right are symmetrically opened on the U-shaped moving platform. Each group consists of two linear grooves that are symmetrically arranged in the up-down direction and extend in the front-back direction. The linear grooves are correspondingly slidably connected with the sliding shafts I. Pressing plates are symmetrically and fixedly arranged on the U-shaped moving platform in the left-right direction. Docking holes II that penetrate through the left and right and are aligned with the docking holes I are respectively opened on the left and right symmetric horizontal sections of the U-shaped moving platform. A plug pin is jointly inserted into the docking holes II and the docking holes I. A nut I is threadedly connected to the left end of the plug pin; 4. A detachable RFID antenna structure according to claim 3, characterized in that: The quick installation part includes a plurality of second socket sleeves uniformly and fixedly arranged at the rear side of the U-shaped moving platform. A second sliding groove penetrating through the front and back is formed on the U-shaped moving platform and the second socket sleeves. A plurality of second ball grooves penetrating through the inside and outside are circumferentially and uniformly formed on the second socket sleeves. Second positioning balls are rotatably arranged in the second ball grooves. A plurality of spring rods elastically and slidably matched with the second sliding groove are uniformly and fixedly arranged at the rear side of the U-shaped fixed platform. The rear end of the spring rod is fixedly provided with a pressing column through a connecting rod. The front end of the pressing column is a conical surface for pressing and matching with the corresponding second positioning ball.

5. A detachable RFID antenna structure according to claim 4, characterized in that: The mounting bracket includes a positioning base plate. A plurality of second locking sleeves corresponding to the second socket sleeves are uniformly and fixedly arranged on the positioning base plate. A second positioning groove penetrating through the front and back and inserted and matched with the corresponding second socket sleeve is formed on the second locking sleeve. The second positioning groove is composed of a second socket and a second locking groove distributed front and back. The connection part between the second socket and the second locking groove is an inclined surface.

6. A detachable RFID antenna structure according to claim 1, characterized in that: The receiving mechanism further includes a pole mounting part for mounting on the vertical pole. A mounting bracket is arranged on the pole mounting part. The pole mounting part includes a mounting plate. The mounting bracket is fixedly arranged on the left side of the front end of the mounting plate. Two groups of left-right penetrating mounting holes are symmetrically arranged up and down on the mounting plate. Each group is composed of front and back symmetric mounting holes. A U-shaped locking hoop with an opening facing left is commonly mounted on each group of mounting holes. The left and right symmetric vertical sections of the U-shaped locking hoop are respectively slidably inserted into the corresponding mounting holes. A second nut is threadedly connected to the left end of the vertical section of the U-shaped locking hoop.

7. A detachable RFID antenna structure according to claim 1, characterized in that: The receiving mechanism further includes a pitching mounting part for pitching adjustment. A mounting bracket is arranged on the pitching mounting part. The pitching mounting part includes a U-shaped adjusting frame fixedly mounted on a plane through bolts and having an opening facing forward. Left and right symmetric arc-shaped grooves penetrating through the left and right are formed on the U-shaped adjusting frame. Adjusting plates are symmetrically and rotatably arranged on the inner side of the U-shaped frame. Second sliding shafts slidably connected to the corresponding arc-shaped grooves are fixedly arranged on the opposite sides of the left and right symmetric adjusting plates. A third nut is threadedly connected to the end of the second sliding shaft far away from the corresponding adjusting plate. A mounting bracket is commonly fixedly arranged between the left and right symmetric adjusting plates.

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