Detachable RFID antenna structure

Abstract

The invention relates to the technical field of RFID external antennas, in particular to a detachable RFID antenna structure, which comprises a positioning mechanism arranged on an antenna shell, a quick mounting mechanism arranged on the rear side of the positioning mechanism, and a bearing mechanism arranged on the quick mounting mechanism. Through the positioning mechanism, most screws can be replaced by the self-adaptive fastening structure, and the number of screws between the back plate and the antenna shell is greatly reduced, so that the assembly process of the RFID external antenna can be remarkably simplified on the premise of ensuring the installation stability of the back plate; according to the invention, through the cooperation of the quick-mounting mechanism and the bearing mechanism, the quick-mounting structure can replace a traditional stud and nut mounting mode, so that the RFID external antenna can be quickly butted with and separated from the mounting base, an operator does not need to screw nuts one by one to complete fastening or dismounting, the dismounting time is greatly shortened, the overall operation complexity is reduced, and the mounting efficiency is improved. And the quick-mounting structure can be simultaneously matched with various mounting scenes such as a holding pole base and a pitching adjusting base.

Description

Technical Field

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

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

[0003] In the prior art, the back plate of the RFID external antenna is usually stably mounted on the antenna housing by a large number of screws, and different back plates can be matched with different mounting bases or mounting methods. For example, the back plate with multiple studs on the back can be matched with the pole base or the pitch adjustment base for installation, while the back plate with integrated hanging ears or magnetic suction structure on the back can be quickly installed on the smart cabinet by bolt fastening or direct magnetic suction.

[0004] However, the traditional methods of disassembling and assembling the back plate of the RFID external antenna and the methods of disassembling and assembling the back plate and the mounting base have the following problems: 1. In the prior art, although the method of fixing the back plate of the RFID external antenna to the antenna shell by multiple screws can ensure the stability of the overall structure, it is necessary to tighten a large number of screws one by one, which leads to cumbersome steps, long time consumption and low efficiency when assembling or replacing the back plate, and limits the flexibility of the RFID external antenna to adapt to different mounting bases or installation methods, and increases the overall workload of the operator; 2. When inspecting or replacing the internal antenna body, the back plate needs to be completely removed, which leads to cumbersome overall inspection and maintenance operations and low inspection and maintenance efficiency, and causes the RFID external antenna to be The overall maintenance and repair of the antenna is less convenient, which affects the normal operating efficiency of the RFID external antenna; 3. When the back plate of the RFID external antenna is fixed to the mounting base through the stud nuts, the nuts need to be screwed one by one to complete the tightening or disassembly. Not only are the operating steps redundant, but when the RFID external antenna mounting base needs to be replaced, the stud assembly needs to be repeatedly disassembled and assembled, thereby significantly reducing the flexibility of scene adaptation. At the same time, if the antenna body needs to be repaired, the installation of the mounting base and the back plate, as well as the back plate and the antenna shell must be removed in turn, thereby further increasing the overall workload of the operator and further weakening the convenience of maintenance of the RFID external antenna. Repeated disassembly and assembly of the studs will also cause thread wear or accessory loss. 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 portion includes a U-shaped movable platform slidably arranged on the U-shaped fixed platform and with its opening facing forward, the U-shaped movable platform is symmetrically provided with two groups of linear grooves extending left and right, each group is composed of linear grooves symmetrically arranged up and down and extending front and back, the linear grooves are correspondingly and slidably connected with the sliding shaft one, a pressing plate is symmetrically and fixedly arranged on the U-shaped movable platform, and docking hole two that passes through left and right and is aligned with the docking hole is provided on the horizontal sections of the U-shaped movable platform, a pin is commonly inserted in the docking hole two and the docking hole one, and a nut one is threadedly connected to the left end of the pin.

[0014] Preferably, the quick-loading part includes a plurality of sleeves 2 uniformly fixedly arranged on the rear side of the U-shaped movable platform, a slide groove 2 penetrating from front to back is jointly provided on the U-shaped movable platform and the sleeve 2, a plurality of ball grooves 2 penetrating from inside to outside are uniformly provided on the sleeve 2 in a circumferential direction, a positioning ball 2 is rollingly arranged in the ball groove 2, a plurality of spring rods elastically slidingly matched with the slide groove 2 are uniformly fixedly arranged on the rear side of the U-shaped fixed platform, a clamping column is fixedly arranged at the rear end of the spring rod via a connecting rod, and the front end of the clamping column is a conical surface that cooperates with the corresponding positioning ball 2 to clamp.

[0015] Preferably, the mounting frame includes a positioning base plate, on which a plurality of locking sleeves corresponding to the second plug sleeves are evenly and fixedly arranged, and the locking sleeves are provided with a positioning groove two which passes through front and back and is plugged into and matched with the corresponding second plug sleeves, and the positioning groove two is composed of a socket two and a locking groove two which are distributed front and back, wherein the connection between the socket two and the locking groove two is an inclined surface.

[0016] Preferably, the receiving mechanism also includes a pole mounting portion for installation on the vertical pole, the pole mounting portion includes a mounting plate, a mounting frame is fixedly arranged on the left side of the front end of the mounting plate, and the mounting plate is symmetrically provided with two groups of left and right through mounting holes, each group is composed of front-to-back symmetrical mounting holes, and each group of mounting holes is commonly provided with a U-shaped locking hoop with an opening facing left, the left-right symmetrical vertical sections of the U-shaped locking hoop are respectively slidably plugged into the corresponding mounting holes, and the left end of the vertical section of the U-shaped locking hoop is threadedly connected with nut 2.

[0017] Preferably, the supporting mechanism also includes a pitch mounting part for pitch adjustment, the pitch mounting part includes a U-shaped adjustment frame, the U-shaped adjustment frame is symmetrically provided with arc grooves that pass through left and right, and an adjustment plate is symmetrically arranged on the inner side of the U-shaped frame for rotation, and a sliding shaft 2 that is slidably connected to the corresponding arc groove is fixedly arranged on the opposite sides of the left and right symmetrical adjustment plates, and a nut 3 is threadedly connected to the end of the sliding shaft 2 away from the corresponding adjustment plate, and a mounting frame is fixedly arranged between the left and right symmetrical adjustment plates.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 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.

[0019] 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

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the partial structure of the positioning mechanism.

[0022] Figure 3 It is a partial cross-sectional schematic diagram of the positioning mechanism structure.

[0023] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0024] Figure 5 It is a partial cross-sectional schematic diagram of the quick-loading mechanism structure.

[0025] Figure 6 It is a partial cross-sectional schematic diagram of the structure of the undertaking mechanism.

[0026] Figure 7 for Figure 6 Enlarged schematic diagram of point B in the middle.

[0027] Figure 8 It is a partial cross-sectional diagram of the structure of the pole mounting part.

[0028] Fig. 9 It is a partial cross-sectional schematic diagram of the pitch mounting part structure.

[0029] Fig.10This is a schematic diagram of the structure of a magnetically mounted RFID external antenna.

[0030] Fig.11 This is a schematic diagram of the ear-mounted RFID external antenna structure.

[0031] 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

[0032] 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.

[0033] 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.

[0034] 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.

[0035] See also Figure 1 and Figure 2The alignment mounting portion 21 includes a circular mounting platform 211 fixedly arranged inside the antenna housing 1, and threaded holes are provided at the four corners of the circular mounting platform 211, and a plurality of locking sleeves 212 are evenly arranged on the circular mounting platform 211. A positioning groove 213 is provided in the locking sleeve 212 and is provided with a rear end through-going positioning groove. The positioning groove 213 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 an inclined surface.

[0036] See also Figure 1 and Figure 3 The fastening portion 23 includes a return groove opened on the rear side of the back plate 22, in which a return positioning plate 231 that moves 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 231 and on the back plate 22, and screws 232 are jointly installed in the alignment holes and the corresponding threaded holes.

[0037] See also Figure 3 and Figure 4 The driven locking portion 24 includes a plurality of sleeves 241 uniformly and fixedly arranged on the front side of the back plate 22, the sleeves 241 are correspondingly plugged into the positioning grooves 213, the sleeves 241 and the back plate 22 are jointly provided with a slide groove 1 which passes through the rear end, the sleeves 241 are uniformly and circumferentially provided with a plurality of ball grooves 1 which pass through inside and outside, a positioning ball 242 is rollingly arranged in the ball groove 1, a plurality of tightening posts 243 which are correspondingly and slidably matched with the slide groove 1 are uniformly and fixedly arranged on the front side of the return-shaped positioning plate 231, the front end of the tightening posts 243 is a conical surface which is tightly matched with the corresponding positioning ball 242, and the front side of the tightening posts 243 is elastically connected with the slide groove 1 through a return spring.

[0038] Insert the insert sleeve 241 stably into the corresponding positioning groove 213 until the back plate 22 is tightly attached to the rear side of the circular mounting platform 211, and align the positioning hole with the corresponding threaded hole. The positioning ball 242 is completely received into the ball groove 1 and the slide groove 1 under the pressure of the corresponding locking sleeve 212. Then, align and fasten each screw 232 into the corresponding positioning hole and threaded hole respectively, so that the circular positioning plate 231 is stably fastened in the circular groove, and the four corners of the back plate 22 are firmly installed on the circular mounting platform 211.

[0039] In the process of fastening the return positioning plate 231 in the return groove by screws 232, the return positioning plate 231 drives the clamping column 243 to move forward synchronously along the corresponding slide groove 1, and the clamping column 243 then squeezes the positioning ball 1 242 completely received in the ball groove 1 and the slide groove 1 into the positioning groove 1 213 through the conical surface at the front end, and the positioning ball 1 242 then contacts the inclined surface at the connection between the locking groove 1 and the socket 1 until the return positioning plate 231 is completely fastened. At this time, under the action of the conical surface at the front end of the clamping column 243, the positioning ball 1 242 has been stably fitted and clamped in the locking groove 1 and the socket 1. On the inclined surface of the joint, the insertion sleeve 241 and the back plate 22 are stably fastened together with the locking sleeve 212 and the return-shaped mounting platform 211 through the positioning ball 242. When the screws 232 used to fasten the four corners of the return-shaped positioning plate 231 and the back plate 22 are removed, the return spring drives the locking column 243 and the return-shaped positioning plate 231 to move backward. At this time, the positioning ball 242 that is not locked by the locking column 243 can be completely retracted into the ball groove 1 and the slide groove 1 under the squeezing of the inclined surface at the connection between the locking groove 1 and the socket 1, so that the back plate 22 can be stably removed from the return-shaped mounting platform 211.

[0040] The above-mentioned operation method can replace most of the screws 232 through the adaptive fastening structure, thereby greatly reducing the number of screws 232 between the back plate 22 and the antenna housing 1, thereby significantly simplifying the assembly process of the RFID external antenna while ensuring the stability of the installation of the back plate 22, and also greatly improving the overall maintenance and inspection convenience of the RFID external antenna.

[0041] See also Figure 1 The quick-install mechanism 3 includes a pressing docking portion 31 arranged on the rear side of the back plate 22, and a locking positioning portion 32 for docking and locking is arranged on the pressing docking portion 31. The pressing docking portion 31 and the locking positioning portion 32 are jointly provided with a quick-installing portion 33.

[0042] See also Figure 1 , Figure 5 and Figure 6 The pressing docking portion 31 includes a U-shaped fixed platform 311 installed on the rear side of the back plate 22 and with its opening facing backward. Two groups of sliding shafts 312 are symmetrically fixed on the U-shaped fixed platform 311. Each group is composed of a sliding shaft 312 symmetrical in the upper and lower parts. The U-shaped fixed platform 311 is provided with a docking hole 1 that passes through the left and right sides on the symmetrical horizontal sections.

[0043] See also Figure 5 and Figure 6The locking and positioning portion 32 includes a U-shaped movable platform 321 slidably arranged on the U-shaped fixed platform 311 and with its opening facing forward. The U-shaped movable platform 321 is symmetrically provided with two groups of linear grooves that are through-through left and right, and each group is composed of linear grooves that are symmetrical up and down and extend front and back. The linear grooves are correspondingly and slidably connected with the sliding shaft 1 312. A pressing plate 322 is symmetrically fixedly arranged on the U-shaped movable platform 321. The U-shaped movable platform 321 is provided with a docking hole 2 that is through-through left and right and aligned with the docking hole on the symmetrical horizontal sections. The docking hole 2 and the docking hole 1 are jointly plugged with a pin 323, and the left end of the pin 323 is threadedly connected with a nut 1.

[0044] First, align the corresponding docking holes 1 and 2 on the U-shaped fixed platform 311 and the U-shaped movable platform 321, then insert the pin 323 into all the docking holes 1 and 2, and install the nut 1 on the left end of the pin 323, so that the U-shaped movable platform 321 and the U-shaped fixed platform 311 are stably locked by the pin 323 so that they cannot move relative to each other forward and backward.

[0045] See also Figure 5 , Figure 6 and Figure 7 The quick-loading part 33 includes a plurality of plug sleeves 331 uniformly fixedly arranged on the rear side of the U-shaped movable platform 321, a slide groove 2 that passes through the front and rear is jointly opened on the U-shaped movable platform 321 and the plug sleeve 331, a plurality of ball grooves 331 that pass through the inside and outside are uniformly opened on the plug sleeve 331 in the circumferential direction, and a positioning ball 332 is rolled in the ball groove 2, and a plurality of spring rods 333 that elastically and slidably cooperate with the slide groove 2 are uniformly fixedly arranged on the rear side of the U-shaped fixed platform 311, and a clamping column 334 is fixedly arranged at the rear end of the spring rod 333 through a connecting rod, and the front end of the clamping column 334 is a conical surface that cooperates and compresses with the corresponding positioning ball 332.

[0046] See also Figure 1 , Figure 8 and Fig. 9 The receiving mechanism 4 includes a mounting frame 41 for cooperating with the quick-install part 33 for quick disassembly and assembly.

[0047] See also Figure 1 , Figure 6 and Figure 7 The mounting frame 41 includes a positioning substrate 411, on which a plurality of locking sleeves 412 corresponding to the second plug sleeves 331 are evenly and fixedly arranged. The locking sleeves 412 are provided with positioning grooves 413 which penetrate front and back and are plugged with the corresponding second plug sleeves 331. The positioning grooves 413 are composed of a second socket and a second locking groove which are distributed front and back, and the connection between the second socket and the second locking groove is an inclined surface.

[0048] When the RFID external antenna is to be installed on the mounting bracket 41, the U-shaped movable table 321 is first moved forward by pressing the pressing plate 322, and the U-shaped fixed table 311 and the sliding shaft 1 312 then move back and forth relative to the corresponding linear groove on the U-shaped movable bracket, and the spring rod 333 then drives the clamping column 334 to move backward along the corresponding slide groove 2 in the sleeve 2 331 through the connecting rod, until the conical surface at the front end of the clamping column 334 is completely separated from the corresponding positioning ball 2 332, and the positioning ball 2 332 can be completely received in the corresponding ball groove 2 and slide groove 2.

[0049] Then, the second insert sleeve 331 is stably inserted into the corresponding positioning groove 2 413 until the U-shaped movable table 321 is tightly attached to the front side of the positioning base plate 411, and the second positioning ball 332 is completely received into the second ball groove and the second slide groove under the pressure of the corresponding locking sleeve 2 412. At this time, the pressing plate 322 is released, and under the elastic action of the spring rod 333, the U-shaped fixed table 311 drives the sliding shaft 1 312 to move forward and reset along the linear groove, and the spring rod 333 drives the clamping column 334 to move forward along the slide groove 2 through the connecting rod, and the clamping column 334 is then The second positioning ball 332 is squeezed into the second positioning groove 413 through the conical surface of the front end until the second positioning ball 332 is locked and pressed against the inclined surface at the junction of the second socket and the second locking groove, and finally the pin 323 is inserted and locked in the docking hole 1 and the docking hole 2, so that the U-shaped fixed platform 311 and the spring rod 333 cannot move relative to the U-shaped movable platform 321 and the second socket 331, so that the RFID external antenna is quickly and stably installed on the mounting frame 41 through the locking positioning of the second positioning ball 332 and the inclined surface at the junction of the second socket and the second locking groove.

[0050] The above-mentioned operation method can replace the traditional stud nut installation method with a quick-release structure, so that the RFID external antenna can be quickly docked and separated from the mounting frame 41, so that the operator does not need to tighten 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-release structure can also be adapted to the pole mounting part 42 or the pitch mounting part 43, which significantly improves the flexibility and efficiency of the RFID external antenna installation scene adaptation. At the same time, it also significantly improves the efficiency and convenience of the maintenance and inspection of the RFID external antenna, and reduces the overall burden of the maintenance and inspection of the RFID external antenna.

[0051] See also Figure 8The receiving mechanism 4 also includes a pole mounting portion 42 for mounting on the vertical pole, the pole mounting portion 42 is arranged on the mounting frame 41, the pole mounting portion 42 includes a mounting plate 421, the mounting frame 41 is fixedly arranged on the left side of the front end of the mounting plate 421, the mounting plate 421 is symmetrically provided with two groups of left and right through mounting holes, each group is composed of front and back symmetrical mounting holes, and each group of mounting holes is commonly provided with a U-shaped locking hoop 422 with an opening facing left, the left and right symmetrical vertical sections of the U-shaped locking hoop 422 are respectively slidably plugged into the corresponding mounting holes, and the left end of the vertical section of the U-shaped locking hoop 422 is threadedly connected with a nut 2.

[0052] When the RFID external antenna mounted on the mounting frame 41 is to be firmly mounted on the vertical pole, firstly put the U-shaped locking hoop 422 on the outside of the vertical pole, and insert the vertical sections of the U-shaped locking hoop 422 into the corresponding mounting holes respectively, and then tighten the nut 2 on the left end of the vertical section 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, thereby firmly mounting the mounting frame 41 and the RFID external antenna mounted on the mounting frame 41 on the vertical pole.

[0053] See also Fig. 9 The receiving mechanism 4 also includes a pitch mounting portion 43 for pitch adjustment, the pitch mounting portion 43 is arranged on the mounting frame 41, and the pitch mounting portion 43 includes a U-shaped adjustment frame 431 with an opening facing forward, and the U-shaped adjustment frame 431 is symmetrically provided with arc grooves 432 that pass through the left and right sides, and an adjustment plate 433 is symmetrically rotated on the inner side of the U-shaped frame, and a sliding shaft 2 434 slidably connected to the corresponding arc groove 432 is fixedly provided on the opposite side of the left and right symmetrical adjustment plates 433, and a nut 3 is threadedly connected to the end of the sliding shaft 2 434 away from the corresponding adjustment plate 433, and the mounting frame 41 is fixedly provided between the left and right symmetrical adjustment plates 433.

[0054] When the RFID external antenna installed on the mounting frame 41 is to be firmly installed on a plane at a specific angle, the U-shaped adjustment frame 431 is first fixed to the plane by bolts, and then the mounting frame 41 and the RFID external antenna installed on the mounting frame 41 and the U-shaped adjustment frame 431 are relatively rotated by the adjustment plate 433, and the sliding shaft 2 434 is synchronously slid and adjusted along the corresponding arc groove 432 until the RFID external antenna is adjusted to the desired angle, and finally the nut 3 is tightened on the sliding shaft 3 until the nut 3 locks the adjustment plate 433 and the U-shaped adjustment frame 431 into position through friction and extrusion force, thereby locking the RFID external antenna at the current angle.

[0055] In addition, the present invention can also be achieved by evenly installing a plurality of cylindrical magnets on the rear side of the back plate 22 (such as Fig.10 As shown), or the ear-hanging patch which is symmetrical up and down and has a through hole is installed on the rear side of the back plate 22 (as shown Fig.11As shown), the original quick-install mechanism 3 is replaced, so that the RFID external antenna can be temporarily installed on the outside of the smart cabinet by direct magnetic fixation, so as to facilitate the temporary emergency operation of the RFID external antenna, or the RFID external antenna can be stably installed inside the smart cabinet by bolt fastening, so as to facilitate the long-term normal operation of the RFID external antenna inside the smart cabinet, thereby significantly improving the flexibility of the RFID external antenna to adapt to different installation methods and installation scenarios.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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 (1), characterized in that: The antenna housing (1) is provided with a positioning mechanism (2), a quick-installation mechanism (3) is provided on the rear side of the positioning mechanism (2), and a receiving mechanism (4) is provided on the quick-installation mechanism (3); The positioning mechanism (2) comprises an alignment installation portion (21) arranged inside the antenna housing (1); a back plate (22) is arranged at the rear side of the alignment installation portion (21); a fastening portion (23) is arranged on the back plate (22) and cooperates with the alignment installation portion (21) to fasten the back plate (22); and a driven locking portion (24) is jointly arranged on the back plate (22) and is adaptively locked with the alignment installation portion (21); The quick-installation mechanism (3) comprises a pressing docking portion (31) arranged on the rear side of the back plate (22), a locking and positioning portion (32) for docking and locking is arranged on the pressing docking portion (31), and a quick-installation portion (33) is arranged on both the pressing docking portion (31) and the locking and positioning portion (32); The receiving mechanism (4) comprises a mounting frame (41) for cooperating with the quick-installation portion (33) for quick assembly and disassembly.

2. The detachable RFID antenna structure according to claim 1, characterized in that: The alignment mounting portion (21) comprises a circular mounting platform (211) fixedly mounted inside the antenna housing (1), threaded holes penetrating the rear end are provided at the four corners of the circular mounting platform (211), a plurality of locking sleeves (212) are evenly arranged on the circular mounting platform (211), a positioning groove (213) penetrating the rear end is provided in the locking sleeve (212), and the positioning groove (213) is composed of a locking groove and a socket distributed front and back, wherein the connection between the locking groove and the socket is an inclined surface.

3. The detachable RFID antenna structure according to claim 1, characterized in that: The fastening portion (23) comprises a return groove formed on the rear side of the back plate (22), a return positioning plate (231) being slidably arranged in the return groove and being movable forward and backward, alignment holes penetrating forward and backward and corresponding to the threaded holes being formed at the four corners of the return positioning plate (231) and on the back plate (22), and screws (232) being installed in the alignment holes and the corresponding threaded holes.

4. The detachable RFID antenna structure according to claim 3, characterized in that: The driven locking portion (24) comprises a plurality of sleeves (241) uniformly and fixedly arranged on the front side of the back plate (22), the sleeves (241) correspondingly and pluggably engage with the positioning grooves (213), the sleeves (241) and the back plate (22) are provided with a sliding groove that passes through the rear end, the sleeves (241) are uniformly and circumferentially provided with a plurality of ball grooves that pass through the inside and outside, a positioning ball (242) is rollingly arranged in the ball grooves, a plurality of locking columns (243) correspondingly and slidably engaged with the sliding grooves are uniformly and fixedly arranged on the front side of the return positioning plate (231), the front end of the locking columns (243) is a conical surface that cooperates with the corresponding positioning ball (242) to lock, and the front side of the locking columns (243) is elastically connected to the sliding grooves via a return spring.

5. The detachable RFID antenna structure according to claim 1, characterized in that: The pressing docking portion (31) comprises a U-shaped fixed platform (311) installed on the rear side of the back plate (22) and with its opening facing backwards. Two groups of sliding shafts (312) are fixedly arranged symmetrically on the U-shaped fixed platform (311), each group of which is composed of sliding shafts (312) symmetrically arranged in the upper and lower parts. A docking hole (1) is provided on the horizontal sections of the U-shaped fixed platform (311) that are symmetrical in the upper and lower parts.

6. The detachable RFID antenna structure according to claim 5, characterized in that: The locking and positioning portion (32) comprises a U-shaped movable platform (321) slidably arranged on the U-shaped fixed platform (311) and with its opening facing forward. The U-shaped movable platform (321) is provided with two groups of linear grooves extending left and right symmetrically, each group of which is composed of linear grooves symmetrically extending front and back. The linear grooves are slidably connected to the sliding shaft (312) in correspondence. A pressing plate (322) is fixedly arranged left and right symmetrically on the U-shaped movable platform (321). A second docking hole extending left and right and aligned with the docking hole is provided on the left and right symmetrical horizontal sections of the U-shaped movable platform (321). A latch (323) is inserted into the docking hole (2) and the docking hole (1). The left end of the latch (323) is threadedly connected to a nut (1).

7. The detachable RFID antenna structure according to claim 6, characterized in that: The quick-installation part (33) comprises a plurality of second plug sleeves (331) uniformly fixedly arranged on the rear side of the U-shaped movable platform (321); a second slide groove extending forward and backward is provided on the U-shaped movable platform (321) and the second plug sleeve (331); a plurality of second ball grooves extending inward and backward are uniformly provided on the second plug sleeve (331) in the circumferential direction; a second positioning ball (332) is rollingly arranged in the second ball groove; a plurality of spring rods (333) elastically slidingly matched with the second slide groove are uniformly fixedly arranged on the rear side of the U-shaped fixed platform (311); a clamping column (334) is fixedly arranged at the rear end of the spring rod (333) via a connecting rod; and a front end of the clamping column (334) is a conical surface that is pressed and matched with the corresponding second positioning ball (332).

8. The detachable RFID antenna structure according to claim 7, characterized in that: The mounting frame (41) comprises a positioning base plate (411), on which a plurality of locking sleeves (412) corresponding to the second plug sleeves (331) are evenly and fixedly arranged, and the locking sleeves (412) are provided with positioning grooves (413) which penetrate front and back and are plugged with the corresponding second plug sleeves (331), and the positioning grooves (413) are composed of a second plug port and a second locking groove which are distributed front and back, wherein the connection between the second plug port and the second locking groove is an inclined surface.

9. The detachable RFID antenna structure according to claim 1, characterized in that: The receiving mechanism (4) further comprises a pole mounting portion (42) for mounting on the vertical pole, the pole mounting portion (42) being provided with a mounting frame (41), the pole mounting portion (42) comprising a mounting plate (421), the mounting frame (41) being fixedly provided on the left side of the front end of the mounting plate (421), the mounting plate (421) being provided with two groups of left-right through-mounting holes symmetrically formed in the upper and lower parts, each group being composed of front-back symmetrical mounting holes, each group of mounting holes being provided with a U-shaped locking hoop (422) with its opening facing left, the left-right symmetrical vertical sections of the U-shaped locking hoop (422) being respectively slidably plugged into the corresponding mounting holes, and the left end of the vertical section of the U-shaped locking hoop (422) being threadedly connected with a second nut.

10. The detachable RFID antenna structure according to claim 1, characterized in that: The receiving mechanism (4) further comprises a pitch mounting portion (43) for performing pitch adjustment, wherein a mounting frame (41) is arranged on the pitch mounting portion (43), and the pitch mounting portion (43) comprises a U-shaped adjustment frame (431) fixedly mounted to a plane by bolts and with an opening facing forward, wherein the U-shaped adjustment frame (431) is provided with arc grooves (432) extending therethrough symmetrically from left to right, and an adjustment plate (433) is symmetrically arranged on the inner side of the U-shaped frame for rotation, wherein two sliding shafts (434) slidably connected to the corresponding arc grooves (432) are fixedly arranged on opposite sides of the left and right symmetrical adjustment plates (433), and a nut three is threadedly connected to one end of the second sliding shaft (434) away from the corresponding adjustment plate (433), and a mounting frame (41) is fixedly arranged between the left and right symmetrical adjustment plates (433).

Images