UHF RFID portable reader-writer

Abstract

The utility model relates to the technical field of reader-writers, and discloses a UHF RFID portable reader-writer, which comprises a main shell, a lampshade is fixedly connected to the front surface of the main shell in a penetrating manner, two clamping blocks are symmetrically and fixedly connected to the upper ends of the front side surface and the rear side surface in the main shell, a mainboard assembly is arranged in the main shell, and a shell cover is arranged at the upper end of the mainboard assembly; a protection mechanism is arranged at the position, behind the mainboard assembly, in the main shell; according to the utility model, the clamping block in the main shell is vertically clamped with the clamping groove of the main board bracket to realize primary fixation, the supporting bolt penetrates through the main board and is in threaded connection with the interior of the bracket to form rigid compression, and the shell cover is directly and fixedly connected to the upper end of the main board bracket I; the modular stacked structure reduces the equipment size, and the protection mechanism constructs an efficient heat conduction path through the synergistic effect of the cooling fin matrix and the clinging block, so that performance frequency reduction or hardware damage caused by heat accumulation during operation of the reader-writer with a compact structure is avoided, and the data acquisition stability is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of reader and writer, specifically a UHF RFID portable reader and writer. BACKGROUND

[0002] UHF RFID technology (860MHz~960MHz frequency band) has become the core solution of large-scale article tracking and data management with its long-distance reading (more than 10 meters), multi-tag fast identification, strong anti-interference and other characteristics; compared with low frequency (LF) and high frequency (HF) RFID, UHF RFID shows significant efficiency advantage in supply chain visualization, inventory checking and large-scale asset monitoring.

[0003] At present, an integrated UHF RFID reader and writer in the industry is difficult to be small, and generally adopts an upper and lower cover shell form.

[0004] A Chinese patent discloses an integrated UHF RFID reader and writer (authorized publication number CN222439966U), which increases a screw column on the PCB of the RFID reader and writer host and fixes a thin baffle, thereby effectively isolating the epoxy resin glue and the radio frequency electronic components, ensuring the passive radio frequency performance of the UHF RFID reader and writer, realizing small volume, high product sealing and waterproof level, solving the problem of small and waterproof function of the traditional UHF integrated machine, and thus applying the small volume and high protection level UHF integrated reader and writer in more space-limited installation application scenarios.

[0005] However, it has certain disadvantages: due to the use of high-density component integration and epoxy resin glue packaging process, the internal heat conduction efficiency of the equipment will decrease, and the temperature of the core mainboard area may be too high under continuous high-load operation; when the working temperature exceeds the rated value of the components, the reader and writer will automatically trigger the frequency reduction protection mechanism, resulting in the reduction of radio frequency output power and directly causing the reduction of effective reading distance. Utility model content

[0006] The utility model aims at providing a UHF RFID portable reader and writer to solve the problems in the above background technology.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] A UHF RFID portable reader and writer, comprising a main shell, a lampshade is fixed through the front surface of the main shell, two clamping blocks are symmetrically fixed on the upper end of the front and rear surfaces in the main shell, a mainboard assembly is arranged in the main shell, and a shell cover is arranged on the upper end of the mainboard assembly.

[0009] The interior of the main shell is provided with a protection mechanism behind the mainboard assembly, the protection mechanism comprises a plurality of heat dissipation fins distributed from left to right, a connecting plate is movably connected through the interiors of the plurality of heat dissipation fins, connecting bolts are movably connected through the four corners of the connecting plate, and a plurality of close contact mechanisms are arranged on the front surface of the heat dissipation fins from top to bottom.

[0010] As a further scheme of the utility model: the mainboard assembly comprises a mainboard support one, the front surface of the mainboard support one is movably embedded and connected with a mainboard, the front surface of the mainboard is movably connected with a mainboard support two, the four corners of the mainboard support two are movably connected through supporting bolts, and a lamp hole is formed in the front surface of the mainboard support two, and two clamping grooves are symmetrically formed in the rear surface of the mainboard support one and the front surface of the mainboard support two.

[0011] As a further scheme of the utility model: the close contact mechanism comprises a close contact block, springs are fixedly connected to the rear surface of the close contact block, and slide rods are fixedly connected to the upper and lower sides of the rear surface of the close contact block.

[0012] As a further scheme of the utility model: the heat dissipation fin movably penetrates the rear surface of the main shell, the connecting plate is attached to the inner rear surface of the main shell, and the rear end of the connecting bolt is screw-connected to the inner rear surface of the main shell.

[0013] As a further scheme of the utility model: the supporting bolt movably penetrates the mainboard, the rear end of the supporting bolt is screw-connected to the interior of the mainboard support one, the lamp hole is opposite to the lampshade, and the shell cover is fixedly connected to the upper end of the mainboard support one.

[0014] As a further scheme of the utility model: the front end of the close contact block is attached to the mainboard assembly, the rear end of the spring is fixedly connected to the front surface of the heat dissipation fin, and the slide rod is slidingly connected to the interior of the heat dissipation fin.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1、the utility model discloses a mainboard support one and a mainboard support two are movably connected through the clamping grooves, the mainboard is movably embedded and connected with the mainboard support one, the mainboard support two is movably connected with the mainboard, the supporting bolt is movably connected through the four corners of the mainboard support two, and the shell cover is fixedly connected to the upper end of the mainboard support one.

[0017] 2, the utility model discloses a protection mechanism is set up, and protection mechanism constructs efficient heat conduction path through the synergies of fin matrix and close -fitted block, effectively avoids the performance reduction or hardware damage caused by heat accumulation while maintaining the compact seal of equipment, ensures data acquisition stability, and the detachable design of modularized heat dissipation piece is realized through connecting bolt, and the efficient heat dissipation and convenient maintenance demand are taken into account, and the heat management scheme is provided for the stable operation of ultra -high frequency RFID reader in harsh working condition. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic diagram of a UHF RFID portable reader;

[0019] Figure 2 It is an explosion view of a UHF RFID portable reader;

[0020] Figure 3 It is a structure schematic diagram of the mainboard assembly in a UHF RFID portable reader;

[0021] Figure 4 It is a structure schematic diagram of the protection mechanism in a UHF RFID portable reader.

[0022] In the drawing: 1, main shell;2, lampshade;3, clamping block;4, mainboard assembly;5, mainboard support one;6, mainboard;7, mainboard support two;8, support bolt;9, lamp hole;10, clamping groove;11, shell cover;12, protection mechanism;13, fin;14, connecting plate;15, connecting bolt;16, close -fitted mechanism;17, close -fitted block;18, spring;19, sliding rod. DETAILED DESCRIPTION

[0023] Please refer to Figures 1-3 In the utility model embodiment, a UHF RFID portable reader includes main shell 1, the front surface of main shell 1 is fixedly connected with lampshade 2, and the upper end of the front and rear surface in the inside of main shell 1 is symmetrically fixedly connected with two clamping blocks 3, the inside of main shell 1 is provided with mainboard assembly 4, and mainboard assembly 4 includes mainboard support one 5, the front surface of mainboard support one 5 is movably embedded and connected with mainboard 6, the front surface of mainboard 6 is movably connected with mainboard support two 7, the four corners of mainboard support two 7 are movably connected with support bolt 8, support bolt 8 movably penetrates mainboard 6, and the rear end of support bolt 8 is screw-connected in the inside of mainboard support one 5, the front surface of mainboard support two 7 is provided with lamp hole 9, and lamp hole 9 is opposite to lampshade 2, the rear surface of mainboard support one 5 and the front surface of mainboard support two 7 are symmetrically provided with two clamping grooves 10, and the upper end of mainboard assembly 4 is provided with shell cover 11, and shell cover 11 is fixedly connected to the upper end of the outside of mainboard support one 5.

[0024] The material of main shell 1 is preferably plastic;

[0025] The lampshade 2 is used for the display of light on the mainboard 6;

[0026] The material of the mainboard support one 5 and the mainboard support two 7 is preferably aluminum alloy, which is used for fixing the mainboard 6;

[0027] The upper end of the mainboard 6 is fixedly connected with a socket, and the support communication interface includes TypeC, Lightning or MicroUsB, and the mobile phone is directly inserted and used;

[0028] The lamp hole 9 is used for the light on the mainboard 6 to pass through;

[0029] The clamping groove 10 is matched with the clamping block 3, and the two form a mortise and tenon type fixing, and the clamping connection realizes the fixing of the mainboard assembly 4 and the main shell 1 (in the clamping process, the main shell 1 will produce a certain amount of deformation);

[0030] The material of the shell cover 11 is preferably aluminum alloy, which can be fixed on the upper end of the mainboard support one 5 by interference fit; the shell cover 11 is provided with a through hole at the center position, and the through hole is opposite to the socket on the mainboard 6.

[0031] In Figures 1-4 , the inside of the main shell 1 located at the rear of the mainboard assembly 4 is provided with a protection mechanism 12, the protection mechanism 12 includes a plurality of cooling fins 13 distributed from left to right, the cooling fins 13 are movably penetrated through the rear surface of the main shell 1, a plurality of cooling fins 13 are movably penetrated through the inside of the connecting plate 14, the connecting plate 14 is attached to the inside rear surface of the main shell 1, the four corners of the connecting plate 14 are movably penetrated through the connecting bolt 15, the rear end of the connecting bolt 15 is threadedly connected to the inside rear surface of the main shell 1, the front surface of the cooling fin 13 is provided with a plurality of close contact mechanisms 16 from top to bottom, the close contact mechanism 16 includes a close contact block 17, the front end of the close contact block 17 is attached to the mainboard assembly 4, the rear surface of the close contact block 17 is fixedly connected with a spring 18, the rear end of the spring 18 is fixedly connected to the front surface of the cooling fin 13, the rear surface of the close contact block 17 is fixedly connected with a slide rod 19 on the upper and lower sides of the spring 18, and the slide rod 19 is slidably connected to the inside of the cooling fin 13;

[0032] The rear surface of the cooling fin 13 is flush with the rear surface of the main shell 1;

[0033] The materials of the cooling fin 13, the close contact block 17 and the slide rod 19 are preferably aluminum alloy, which has high heat conduction performance and is used for dissipating the heat of the mainboard assembly 4, thereby improving the heat dissipation efficiency of the reader;

[0034] The slide rod 19 limits the movement direction of the close contact block 17, avoids lateral deviation, and improves the heat conduction efficiency;

[0035] By loosening the connecting bolt 15, the connecting plate 14 can be disassembled, thereby facilitating the maintenance of the cooling fin 13.

[0036] The working principle of the utility model is: embedding the mainboard 6 into the front surface of the mainboard support one 5, through the support bolt 8 penetrating the mainboard support two 7, the mainboard 6 and the threaded connection with the mainboard support one 5, forming the preliminary fixation, vertically inserting the mainboard assembly 4 into the main shell 1, the clamping block 3 and the clamping groove 10 are fixed through the mortise and tenon type clamping (the main shell 1 plastic material quality allows the trace deformation to adapt the clamping pressure), in the process of inserting the mainboard assembly 4, the rear surface of the mainboard assembly 4 will be attached to the close block 17 and extrude the spring 18, finally, the shell cover 11 is directly pressed into the upper end of the mainboard support one 5 and is fixed, thereby completing the fixation of the whole reader-writer.

[0037] The above is only the preferred embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

[0038] In the description of the utility model, it is necessary to explain that, unless there is explicit provision and limitation, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication inside two elements. For ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A UHF RFID handheld reader, comprising a main shell (1), the front surface of the main shell (1) is fixed with a lampshade (2), and the upper end of the front and rear surfaces of the inside of the main shell (1) is symmetrically fixed with two clamping blocks (3), the inside of the main shell (1) is provided with a mainboard assembly (4), and the upper end of the mainboard assembly (4) is provided with a shell cover (11). characterized in that The inside of the main shell (1) is provided with a protection mechanism (12) behind the mainboard assembly (4), the protection mechanism (12) comprises a plurality of heat dissipation fins (13) distributed from left to right, a plurality of the heat dissipation fins (13) are movably connected with a connecting plate (14) inside, the four corners of the connecting plate (14) are movably connected with connecting bolts (15), and the front surface of the heat dissipation fin (13) is provided with a plurality of close contact mechanisms (16) from top to bottom.

2. The UHF RFID body-worn reader according to claim 1, wherein, The mainboard assembly (4) comprises a mainboard support one (5), the front surface of the mainboard support one (5) is movably embedded with a mainboard (6), the front surface of the mainboard (6) is movably connected with a mainboard support two (7), the four corners of the mainboard support two (7) are movably connected with supporting bolts (8), and the front surface of the mainboard support two (7) is provided with a lamp hole (9), and the rear surface of the mainboard support one (5) and the front surface of the mainboard support two (7) are symmetrically provided with two clamping grooves (10).

3. The UHF RFID body-worn reader of claim 1, wherein, The close contact mechanism (16) comprises a close contact block (17), the rear surface of the close contact block (17) is fixed with a spring (18), and the rear surface of the close contact block (17) is fixed with a slide rod (19) on the upper and lower sides of the spring (18).

4. The UHF RFID body-worn reader of claim 1, wherein, The heat dissipation fin (13) movably penetrates the rear surface of the main shell (1), the connecting plate (14) is attached to the inner rear surface of the main shell (1), and the rear end of the connecting bolt (15) is threadedly connected to the inner rear surface of the main shell (1).

5. The UHF RFID body-worn reader of claim 2, wherein, The supporting bolt (8) movably penetrates the mainboard (6), and the rear end of the supporting bolt (8) is threadedly connected to the inside of the mainboard support one (5), the lamp hole (9) is opposite to the lampshade (2), and the shell cover (11) is fixed to the upper end of the outside of the mainboard support one (5).

6. The UHF RFID body-worn reader of claim 3, wherein, The front end of the close contact block (17) is attached to the mainboard assembly (4), the rear end of the spring (18) is fixed to the front surface of the heat dissipation fin (13), and the slide rod (19) is slidably connected to the inside of the heat dissipation fin (13).

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