Passive rfid positioning device

Abstract

This utility model discloses a passive RFID positioning device, belonging to the field of RFID reader technology. The passive RFID positioning device includes a housing. A first detection shell is fixed to one side of the bottom of the housing, and a second detection shell is fixed to the other side of the bottom of the housing. A switch door is rotatably mounted on one side of both the first and second detection shells, and a door handle and a lock are provided on one side of each door. Inside the housing is a lifting mechanism capable of adaptively adjusting the height of the reader. The lifting mechanism also includes a disassembly and assembly mechanism that simplifies and facilitates reader maintenance and replacement. This utility model, by incorporating a lifting mechanism, can adaptively adjust the height of the RFID reader to accommodate items of different heights, significantly reducing the missed reading rate caused by signal attenuation, improving the accuracy and reliability of identification, and ensuring stable operation of the device because the RFID reader is located inside the detection shell and will not interfere with the outside of the detection shell.

Description

Technical Field

[0001] This utility model relates to the field of RFID card reader technology, and in particular to a passive RFID positioning device. Background Technology

[0002] RFID is a wireless communication technology used to automatically identify and track information on tags. An RFID system consists of a reader and a tag. An RFID tag typically includes a chip and an antenna. The chip is used to store and process data, and the antenna is used to communicate with the reader. When the RFID tag is within range of the reader, the reader sends a radio signal to the tag, activating the tag and reading the information stored within it. This enables RFID technology to automatically identify and track items without direct contact with the tag.

[0003] According to the announcement number CN221258281U, an RFID device that is easy to adjust in angle is proposed. By setting up a toothed column, a limiting sleeve, a lifting plate, a first rotating rod and a second gear, etc., the height of the RFID device body can be easily adjusted, making it more convenient to use the RFID device body, thereby achieving the purpose of conveniently adjusting the height of the RFID device body.

[0004] Existing RFID readers are fixed in place, and the vertical distance between their antenna array and the object being identified remains constant. They can only identify RFID tags within a certain range. When the height of the object to be identified changes, the signal attenuation becomes severe, resulting in a high rate of missed reads. Manual intervention is required to adjust the device position or rearrange the antenna system to ensure an effective reading rate.

[0005] Therefore, there is an urgent need to provide a passive RFID positioning device to solve the above problems. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a passive RFID positioning device.

[0007] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a passive RFID positioning device is provided, including a housing, a first detection shell is fixed on one side of the bottom end of the housing, and a second detection shell is fixed on the other side of the bottom end of the housing;

[0008] Both the first and second detection shells have a switch door rotatably mounted on one side, and the switch door has a door handle and a door lock on one side.

[0009] The housing is equipped with a lifting mechanism that can adaptively adjust the height of the reader, and the lifting mechanism is equipped with a disassembly and assembly mechanism that makes reader maintenance and replacement simple and quick.

[0010] Using the above technical solution, after opening the door lock and opening the door using the door handle, the interior of the first or second detection housing can be inspected.

[0011] The present invention is further configured such that: the lifting mechanism includes dual-axis motors respectively fixed on both sides of the bottom wall inside the housing, and the output shafts of the two dual-axis motors are fixedly connected to two worm shafts through couplings.

[0012] The above technical solution enables a dual-axis motor to drive two worm shafts to rotate.

[0013] The present invention is further configured such that: two ball screws with one end penetrating through and extending into the machine housing are rotatably installed on the inner bottom wall of both the first and second detection shells; one end of each of the four ball screws is fixed with a mounting worm wheel, and the mounting worm wheel meshes with the worm shaft.

[0014] Through the above technical solution, the two worm shafts drive the ball screw to rotate by installing worm wheels.

[0015] The present invention is further configured such that: ball nut seats are threadedly installed on the outside of both ball screws, a mounting shell is fixed on one side of each of the two ball nut seats, and an RFID reader is attached between the two mounting shells.

[0016] Through the above technical solution, the two ball screws drive the ball nut seats to rise and fall respectively, and the ball nut seats drive the mounting shell to rise and fall accordingly.

[0017] The present invention is further configured such that: the disassembly and assembly mechanism includes a rotating shaft rotatably mounted on one side of the inner wall of the mounting housing, one end of the rotating shaft passing through and extending into the groove of the mounting housing, and an installation gear fixed to the outside of the rotating shaft.

[0018] Using the above technical solution, the rotating shaft is rotated by hand, and the rotating shaft drives the installed gear to rotate.

[0019] The present invention is further configured such that: two mounting racks are slidably installed between the inner walls of the mounting shell, the mounting gear meshes with the two mounting racks, and one end of each of the two mounting racks is fixed with a mounting insert that extends through and out of the mounting shell.

[0020] Through the above technical solution, the mounting gear drives the two mounting racks to retract, and the two mounting racks respectively drive the mounting blocks to smoothly extend and retract through the mounting shell.

[0021] The present invention is further configured such that: a cylindrical spring is fixed between one end of the mounting plug and the inner wall of the mounting shell, and plug-in sleeves are fixed at both ends of both sides of the RFID reader, and the outside of the mounting plug and the inside of the plug-in sleeve are fitted together.

[0022] Through the above technical solution, a cylindrical spring drives a mounting block to extend outward, and two mounting blocks extend and retract synchronously through a gear rack, so that the mounting blocks can fix and loosen the RFID reader's plug-in sleeve.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. This utility model, by providing a lifting mechanism, can adaptively adjust the height of the RFID reader to accommodate items of different heights, significantly reducing the missed reading rate caused by signal attenuation, improving the accuracy and reliability of identification, and the RFID reader is located inside the detection shell, so it will not interfere with the outside of the detection shell, ensuring the stable operation of the equipment.

[0025] 2. This utility model, by providing a disassembly and assembly mechanism, enables the RFID reader to be quickly disassembled and assembled, making the maintenance and replacement of the RFID reader simple and quick, reducing equipment downtime and maintenance costs, and improving overall operational efficiency. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a cross-sectional structural diagram of the casing of this utility model;

[0028] Figure 3 This is a diagram showing the internal structure of the second detection shell of this utility model;

[0029] Figure 4 This is a structural diagram of the disassembly and assembly mechanism of this utility model;

[0030] Figure 5 This is an exploded structural diagram of the disassembly and assembly mechanism of this utility model.

[0031] In the diagram: 1. Housing; 2. First detection housing; 3. Second detection housing; 4. Opening / closing door; 5. Lifting mechanism; 501. Dual-axis motor; 502. Worm shaft; 503. Ball screw; 504. Mounting worm wheel; 505. Ball nut seat; 506. Mounting housing; 507. RFID reader; 6. Disassembly / assembly mechanism; 601. Rotating shaft; 602. Mounting gear; 603. Mounting rack; 604. Mounting insert; 605. Cylindrical spring; 606. Insertion sleeve. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0033] Please see Figures 1-5 A passive RFID positioning device includes a housing 1. A first detection shell 2 is fixed to one side of the bottom of the housing 1, and a second detection shell 3 is fixed to the other side of the bottom of the housing 1. A switch door 4 is rotatably mounted on one side of both the first and second detection shells 2 and 3, and a door handle and a door lock are provided on one side of the switch door 4. Inside the housing 1, there is a lifting mechanism 5 capable of adaptively adjusting the height of the reader. The lifting mechanism 5 includes dual-axis motors 501 fixed to both sides of the inner bottom wall of the housing 1. The output shafts of the two dual-axis motors 501 are fixedly connected to two worm shafts 502 via couplings. Two ball screws 503, one end of which penetrates and extends into the interior of the housing 1, are rotatably mounted on the inner bottom walls of both the first and second detection shells 2 and 3. A worm gear 504 is fixedly mounted on one end of each of the four ball screws 503. The worm gear 504 meshes with the worm shaft 502. Ball screws 503 are threadedly fitted with ball nut seats 505. A mounting shell 506 is fixed to one side of each ball nut seat 505. An RFID reader 507 is attached between the two mounting shells 506. A dual-axis motor 501 drives the two worm shafts 502 to rotate. The two worm shafts 502 drive the ball screws 503 to rotate via the worm gear 504. The two ball screws 503 drive the ball nut seats 505 to rise and fall. The ball nut seats 505 then drive the mounting shells 506 to rise and fall accordingly, thereby driving the RFID reader 507 to adaptively adjust the height of the RFID tag. After unlocking the door and opening the door 4 via the door handle, the interior of the first detection shell 2 or the second detection shell 3 can be inspected.

[0034] like Figures 3-5As shown, the lifting mechanism 5 has an internal disassembly and assembly mechanism 6 that makes reader maintenance and replacement simple and quick. The disassembly and assembly mechanism 6 includes a rotating shaft 601 rotatably mounted on one side of the inner wall of the mounting housing 506. One end of the rotating shaft 601 passes through and extends into the groove of the mounting housing 506. An installation gear 602 is fixed to the outside of the rotating shaft 601. Two installation racks 603 are slidably mounted between the inner walls of the mounting housing 506. The installation gear 602 meshes with the two installation racks 603. One end of each of the two installation racks 603 is fixed with an installation insert 604, one end of which passes through and extends to the outside of the mounting housing 506. A cylindrical spring 605 is fixed between one end of the installation insert 604 and the inner wall of the mounting housing 506. Plug-in sleeves 606 are fixed to both ends of the RFID reader 507. The outer part of the mounting block 604 is fitted into the inner part of the insertion sleeve block 606. By manually rotating the rotating shaft 601, the rotating shaft 601 drives the mounting gear 602 to rotate. The mounting gear 602 drives the two mounting racks 603 to retract. The two mounting racks 603 respectively drive the mounting block 604 to retract smoothly through the mounting shell 506, so that the mounting block 604 is released from the insertion sleeve block 606 of the RFID reader 507, thereby maintaining the RFID reader 507. Similarly, when installing the RFID reader 507, the cylindrical spring 605 drives one mounting block 604 to extend outward. The two mounting blocks 604 extend and retract synchronously through the gear and rack, so that the mounting block 604 fixes the insertion sleeve block 606 of the RFID reader 507.

[0035] In use, the dual-axis motor 501 drives two worm shafts 502 to rotate. Each worm shaft 502 drives a ball screw 503 to rotate via a mounting worm wheel 504. The two ball screws 503 then drive a ball nut seat 505 to rise and fall. The ball nut seat 505, in turn, drives the mounting housing 506 to rise and fall, thereby driving the RFID reader 507 to adaptively adjust the height of the RFID tag. After opening the door 4 using the door handle, the interior of either the first detection housing 2 or the second detection housing 3 can be inspected. The rotating shaft 601 is rotated manually, driving the mounting gear 602. Rotation causes the mounting gear 602 to drive the two mounting racks 603 to retract. The two mounting racks 603 then drive the mounting blocks 604 to retract smoothly through the mounting housing 506, allowing the mounting blocks 604 to disengage from the connector sleeve 606 of the RFID reader 507, thus enabling maintenance of the RFID reader 507. Similarly, when installing the RFID reader 507, the cylindrical spring 605 drives one mounting block 604 to extend outward, and the two mounting blocks 604 extend and retract synchronously through the gears and racks, thus fixing the mounting blocks 604 to the connector sleeve 606 of the RFID reader 507.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A passive RFID positioning device, comprising a housing (1), characterized in that: A first detection shell (2) is fixed to one side of the bottom end of the housing (1), and a second detection shell (3) is fixed to the other side of the bottom end of the housing (1). The first detection shell (2) and the second detection shell (3) are each rotatably mounted with a switch door (4) on one side, and the switch door (4) is provided with a door handle and a door lock on one side; The housing (1) is equipped with a lifting mechanism (5) that can adaptively adjust the height of the reader, and the lifting mechanism (5) is equipped with a disassembly and assembly mechanism (6) that makes the maintenance and replacement of the reader simple and quick.

2. The passive RFID positioning device according to claim 1, characterized in that: The lifting mechanism (5) includes two dual-axis motors (501) fixed on both sides of the bottom wall inside the housing (1), and the output shafts of the two dual-axis motors (501) are fixedly connected to two worm shafts (502) through a coupling.

3. The passive RFID positioning device according to claim 2, characterized in that: The inner bottom walls of the first detection shell (2) and the second detection shell (3) are rotatably mounted with two ball screws (503) with one end penetrating and extending into the machine housing (1). One end of each of the four ball screws (503) is fixed with a mounting worm wheel (504), which meshes with the worm shaft (502).

4. A passive RFID positioning device according to claim 3, characterized in that: Both ball screws (503) are threaded with ball nut seats (505) on their exteriors. Each of the two ball nut seats (505) is fixed with a mounting shell (506) on one side. An RFID reader (507) is attached between the two mounting shells (506).

5. A passive RFID positioning device according to claim 4, characterized in that: The disassembly and assembly mechanism (6) includes a rotating shaft (601) rotatably mounted on one side of the inner wall of the mounting housing (506). One end of the rotating shaft (601) passes through and extends into the groove of the mounting housing (506). An installation gear (602) is fixed to the outside of the rotating shaft (601).

6. A passive RFID positioning device according to claim 5, characterized in that: Two mounting racks (603) are slidably installed between the inner walls of the mounting housing (506). The mounting gear (602) meshes with the two mounting racks (603). One end of each of the two mounting racks (603) is fixed with a mounting insert (604) that extends through and out of the mounting housing (506).

7. A passive RFID positioning device according to claim 6, characterized in that: A cylindrical spring (605) is fixed between one end of the mounting block (604) and the inner wall of the mounting shell (506). Both ends of the RFID reader (507) are fixed with plug-in sleeves (606). The outside of the mounting block (604) is fitted and connected to the inside of the plug-in sleeves (606).

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