Signal leakage prevention structure based on RFID card reading equipment

Abstract

The utility model relates to the technical field of RFID equipment, and discloses a signal leakage prevention structure based on RFID card reading equipment, which comprises a cabinet body, a hole is arranged at the top of the cabinet body, an inner box wall is fixedly connected at the hole, a shielding strip I is arranged at the top of the inner box wall, and an automatic cover plate assembly is arranged at the top of the cabinet body. An automatic cover plate assembly is used for sealing a top opening of an inner box wall, a bottom opening of the inner box wall is provided with a mounting plate, a joint of the mounting plate and the inner box wall is provided with a second shielding strip, the inner wall of the inner box wall is fixedly connected with an acrylic plate, an antenna is mounted at the bottom of the acrylic plate, and the top of the mounting plate is provided with a mounting groove penetrating to the bottom. The radio frequency transmitter is arranged in the mounting groove, and a shielding strip III is arranged at the joint of the radio frequency transmitter and the mounting groove; according to the utility model, the cabinet body, the automatic cover plate assembly, the inner box wall and the pressing buckle mechanism assembly are matched, so that a card reading label can be in a closed card reading effect, and the phenomenon that a radio frequency signal is easy to leak and the card reading process is influenced is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to RFID equipment technical field more particularly to a prevent signal leakage structure based on RFID card reading equipment. BACKGROUND

[0002] RFID card reading is through RFID technology realizes the non -contact type reading process to electronic tag data. Its core lies in using radio frequency signal to complete the wireless communication between label and read -write, is widely used in automation identification, data acquisition etc. scene, RFID card reading principle is through antenna transmits specific frequency radio frequency signal, activates label (passive label obtains energy through electromagnetic induction, active label initiates signal transmission), label will store unique ID or data modulation and reflect back to read -write, read -write parses signal and transports to computer system.

[0003] However, the existing RFID card reading environment mostly adopts open type, which leads to radio frequency signal easy to leak or be interfered by external electromagnetic, especially when applied to multiple quantity reading, RFID card reading error or speed reduction is easily caused. UTILITY MODEL CONTENT

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a prevent signal leakage structure based on RFID card reading equipment to solve the problem of signal leakage of traditional RFID card reading equipment in the above background technology.

[0005] The utility model provides the following technical scheme: a prevent signal leakage structure based on RFID card reading equipment, including RFID card reading device, RFID card reading device includes antenna, radio frequency transmitter, the radio frequency transmitter is used to produce radio frequency signal, the antenna is used for sending and receiving signal, including cabinet, the cabinet top is opened with the hole, its hole portion fixedly connected with inner box wall, the inner box wall top is provided with shielding strip no.

[0006] Further, the shielding strip one, the shielding strip two and the shielding strip three are made of conductive rubber.

[0007] Further, the cabinet body is internally provided with a PLC controller, the cabinet body top is provided with a button switch, the inner box wall inner wall is provided with a proximity sensor, the proximity sensor and the button switch are electrically connected with the PLC controller; two pressing buckle mechanism assemblies are electrically connected with the PLC controller.

[0008] Further, the automatic cover plate assembly comprises a hinge assembly, a cover plate body and an electric cylinder, the hinge assembly penetrates from the cabinet body top to the cabinet body bottom, the cover plate body is fixedly connected on the hinge assembly, the electric cylinder output end is connected with the hinge assembly, and the electric cylinder is used for controlling the hinge assembly to overturn, and the electric cylinder bottom end is movably connected with a connecting seat, and the connecting seat is fixedly connected on the cabinet body inner wall.

[0009] Further, the hinge assembly comprises a barrel shell, a rotating column is rotatably sleeved in the barrel shell, a plurality of half-ring through grooves one are formed in the barrel shell top, a plurality of connecting arms are fixedly connected to the rotating column side wall, a connecting plate is connected to the plurality of connecting arms through the plurality of half-ring through grooves, the connecting plate is fixedly connected with the cover plate body, a half-ring through groove two is formed in the barrel shell bottom, a pushing arm is fixedly connected to the barrel shell bottom, and the pushing arm is movably connected with the electric cylinder output end through the half-ring through groove two.

[0010] Further, the pressing buckle mechanism assembly comprises a barrel seat, a rotating knob is rotatably sleeved in the barrel seat inner cavity, a pressure plate is fixedly connected to the rotating knob top, the pressure plate height is higher than that of the automatic cover plate assembly in the closed state, a half-ring pad is fixedly connected to the pressure plate bottom, the half-ring pad bottom is provided as a slope, a motor is fixedly installed on the barrel seat bottom, and the motor output shaft penetrates into the barrel seat inner cavity and is connected with the rotating knob bottom end; the motor is electrically connected with the PLC controller through a relay and a contactor.

[0011] Further, one side of the pressure plate is provided with a truncation surface.

[0012] The technical effects and advantages of the utility model are as follows:

[0013] The cabinet body, the automatic cover plate assembly, the inner box wall and the pressing buckle mechanism assembly are matched, so that the card reading label is in a closed card reading effect, the radio frequency signal is prevented from being easily leaked, and the card reading process is not affected; in addition to the closed effect, multiple shielding structures are arranged, for example, shielding strips are arranged at the inner box wall and the mounting plate connection position, the radio frequency transmitter and the mounting plate connection position and the automatic cover plate assembly and the inner box wall contact position, so that the radio frequency signal sealing degree in the inner box wall is ensured, and the radio frequency signal leakage is further prevented.

[0014] In addition, a snap-fit ​​mechanism is added. By setting the snap-fit ​​mechanism, the automatic cover assembly can be pressed tightly. On the one hand, it can prevent external tension from causing structural damage when the automatic cover assembly is in the closed state. On the other hand, the pressing effect of the snap-fit ​​mechanism can make the automatic cover assembly fit better with the shielding strip, thus improving the signal isolation effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A schematic diagram of the cabinet's cross-sectional structure;

[0017] Figure 3 This utility model Figure 2 A schematic diagram of the automatic cover assembly structure in the image;

[0018] Figure 4 This utility model Figure 3 A schematic diagram of the hinge component structure in the diagram;

[0019] Figure 5 This utility model Figure 2 A structural breakdown diagram of the snap-fit ​​mechanism component.

[0020] The attached diagram is labeled as follows: 1. Cabinet; 2. Automatic cover assembly; 3. PLC controller; 4. Inner box wall; 5. Antenna; 6. Radio frequency transmitter; 7. Clamping mechanism assembly; 8. Mounting plate; 9. Proximity sensor; 10. Push button switch; 11. Acrylic plate; 21. Hinge assembly; 22. Cover body; 23. Electric cylinder; 24. Connecting seat; 211. Cylinder shell; 212. Rotating column; 213. Connecting arm; 214. Connecting plate; 215. Actuating arm; 71. Cylinder seat; 72. Knob; 73. Motor; 74. Pressure plate; 75. Semi-ring gasket. Detailed Implementation

[0021] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] Reference Figure 1 and Figure 2The utility model provides a kind of anti-signal leakage structure based on RFID card reading equipment, including RFID card reading device, RFID card reading device includes antenna 5, radio frequency transmitter 6, radio frequency transmitter 6 is used to generate radio frequency signal, antenna 5 is used to send and receive signal, including cabinet 1, cabinet 1 top is provided with hole, its hole portion is fixedly connected with inner box wall 4, inner box wall 4 top is provided with shielding strip one, cabinet 1 top is equipped with automatic cover plate assembly 2, and its automatic cover plate assembly 2 is used to inner box wall 4 top opening closure, inner box wall 4 bottom opening is equipped with mounting plate 8, and mounting plate 8 and inner box wall 4 junction are provided with shielding strip two, and inner box wall 4 inner wall is fixedly connected with acrylic plate 11, and antenna 5 is installed in acrylic plate 11 bottom, and mounting plate 8 top is provided with installation groove that penetrates to bottom, and radio frequency transmitter 6 is arranged in installation groove, and radio frequency transmitter 6 and installation groove junction are provided with shielding strip three;Two press buckle mechanism components 7 are installed in cabinet 1, and the output of two press buckle mechanism components 7 is respectively penetrated to the both sides position of cabinet 1 top automatic cover plate assembly 2, and press buckle mechanism component 7 is used to press tightly fixed automatic cover plate assembly 2 in closed state.

[0023] When using, automatic cover plate assembly 2 is opened, and card reading is placed in inner box wall 4 and is supported by acrylic plate 11, then inner box wall 4 is sealed by automatic cover plate assembly 2, radio frequency signal is generated by radio frequency transmitter 6, because inner box wall 4 and mounting plate 8, radio frequency transmitter 6 and mounting plate 8 are sealed by shielding strip two and shielding strip three respectively, so that the radio frequency signal sent by antenna 5 only propagates in inner box wall 4, which avoids radio frequency signal leakage or external interference to the greatest extent, shielding strip one is arranged between inner box wall 4 and automatic cover plate assembly 2, which can fill the gap between automatic cover plate assembly 2 and inner box wall 4, and ensure the signal isolation performance of inner box wall 4;In addition, when automatic cover plate assembly 2 is closed, two press buckle mechanism components 7 can press and lock automatic cover plate assembly 2, so as to improve the precision of the contact between automatic cover plate assembly 2 and shielding strip one, and improve the sealing performance;Cabinet 1, inner box wall 4 and mounting plate 8 are made of metal material, which has good radio frequency shielding effect, including but not limited to: iron, aluminum, steel.

[0024] Refer to Figure 2 Shielding strip one, shielding strip two and shielding strip three are made of conductive rubber.

[0025] Conductive silicone rubber has good electromagnetic wave shielding effect, which can effectively block radio frequency signals, and can effectively fill the gap according to its soft performance.

[0026] Refer to Figure 2, the inside of the cabinet 1 is provided with a PLC controller 3, the top of the cabinet 1 is provided with a button switch 10, the inner wall of the inner box wall 4 is provided with a proximity sensor 9, the proximity sensor 9 and the button switch 10 are electrically connected with the PLC controller 3; two pressing buckle mechanism assemblies 7 are electrically connected with the PLC controller 3.

[0027] By closing the button switch 10, a closing signal can be transmitted to the PLC controller 3, and the automatic cover plate assembly 2 is controlled to run automatically by the PLC controller 3, when the automatic cover plate assembly 2 is closed, the proximity sensor 9 detects the object approaching and sends a signal to the PLC controller 3, and the pressing buckle mechanism assembly 7 is controlled to run by the PLC controller 3 to generate a force on the automatic cover plate assembly 2; when the button switch 10 is opened, an opening signal can be sent to the PLC controller 3, the pressing buckle mechanism assembly 7 is controlled to run to cancel the action on the automatic cover plate assembly 2 by the PLC controller 3, and at the same time the automatic cover plate assembly 2 is controlled to run by the PLC controller 3. Open, thus making the device have an automatic effect, and using more convenient.

[0028] Referring to Figure 3 , the automatic cover plate assembly 2 comprises a hinge assembly 21, a cover plate body 22 and an electric cylinder 23; the hinge assembly 21 penetrates from the top of the cabinet 1 to the bottom of the cabinet 1, the cover plate body 22 is fixedly connected on the hinge assembly 21, and the output end of the electric cylinder 23 is connected with the hinge assembly 21. The hinge assembly 21 is used to control the overturning of the hinge assembly 21, and the bottom end of the electric cylinder 23 is movably connected with a connecting seat 24 which is fixedly connected with the inner wall of the cabinet 1.

[0029] The electric cylinder 23 is electrically connected with the PLC controller 3 through a relay and a contactor; when the automatic cover plate assembly 2 runs, that is, the electric cylinder 23 runs to control the hinge assembly 21 to overturn, driving the cover plate body 22 to overturn at an angle, realizing the automatic opening and closing effect of the automatic cover plate assembly 2; through the connecting structure of the electric cylinder 23 and the connecting seat 24, the electric cylinder 23 can change the angle according to the overturning angle of the hinge assembly 21; the cover plate body 22 is made of metal material, and the metal material has good radio frequency model shielding effect, including but not limited to: one of iron, aluminum and steel.

[0030] Referring to Figure 4 , the hinge assembly 21 comprises a barrel shell 211, a rotating column 212 rotatably sleeved in the barrel shell 211, a plurality of semi-ring through grooves one are formed in the top of the barrel shell 211, a plurality of connecting arms 213 are fixedly connected with the side wall of the rotating column 212, a connecting plate 214 is connected through the plurality of semi-ring through grooves, the connecting plate 214 is fixedly connected with the cover plate body 22, a semi-ring through groove two is formed in the bottom of the barrel shell 211, a driving arm 215 is fixedly connected with the bottom of the barrel shell 211, and the driving arm 215 is movably connected with the output end of the electric cylinder 23 through the semi-ring through groove two.

[0031] When the electric cylinder 23 operates, a pushing force or a pulling force can be generated on the toggle arm 215, the toggle arm 215 drives the rotating column 212 to rotate inside the barrel shell 211, in the process, the connecting arms 213 are turned over, under the connecting effect of the connecting plate 214, the cover plate body 22 is further driven to turn over, and the opening and closing states of the automatic cover assembly 2 are realized.

[0032] With reference to Figure 5 The pressing buckle mechanism assembly 7 comprises a barrel seat 71, the barrel seat 71 is rotatably sleeved with a knob 72 in the inner cavity, the knob 72 is fixedly connected with a pressing disc 74 at the top, the pressing disc 74 is higher than the automatic cover assembly 2 in the closed state, the pressing disc 74 is fixedly connected with a half-ring pad 75 at the bottom, the half-ring pad 75 is provided as a slope at the bottom, the barrel seat 71 is fixedly installed with a motor 73 at the bottom, the output shaft of the motor 73 penetrates into the inner cavity of the barrel seat 71 and is connected with the bottom end of the knob 72; the motor 73 is electrically connected with the PLC controller 3 through a relay and a contactor.

[0033] When the pressing buckle mechanism assembly 7 operates, the knob 72 is driven to rotate by the output rotary power of the motor 73, the pressing disc 74 is driven to rotate by the knob 72, the half-ring pad 75 at the bottom of the pressing disc 74 is changed in position, since the half-ring pad 75 is provided as a slope at the bottom, the half-ring pad 75 reaches the top of the automatic cover assembly 2, and the automatic cover assembly 2 can be gradually pressed.

[0034] With reference to Figure 5 The pressing disc 74 is provided with a truncated surface on one side.

[0035] By providing the truncated surface, the automatic cover assembly 2 can pass through the truncated surface of the pressing disc 74 when operating and closing, so that the pressing disc 74 does not block the automatic cover assembly 2 when closing.

[0036] The basic principle, main characteristics and advantages of the utility model are shown and described above. The utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and the utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A signal leakage prevention structure based on an RFID card reader, comprising an RFID card reader device, the RFID card reader device including an antenna (5) and a radio frequency transmitter (6), wherein the radio frequency transmitter (6) is used to generate radio frequency signals, and the antenna (5) is used to transmit and receive signals, characterized in that: The system includes a cabinet (1), with an opening at the top of the cabinet (1), and an inner box wall (4) fixedly connected to the opening. A shielding strip is provided at the top of the inner box wall (4). An automatic cover assembly (2) is installed at the top of the cabinet (1) to close the opening at the top of the inner box wall (4). An installation plate (8) is installed at the bottom opening of the inner box wall (4), and a second shielding strip is provided at the connection between the installation plate (8) and the inner box wall (4). An acrylic plate (11) is fixedly connected to the inner wall of the inner box wall (4). The wire (5) is installed at the bottom of the acrylic plate (11). The top of the mounting plate (8) is provided with a mounting groove that extends to the bottom. The radio frequency transmitter (6) is set in the mounting groove, and a shielding strip is provided at the connection between the radio frequency transmitter (6) and the mounting groove. Two snap-fit ​​mechanism assemblies (7) are installed inside the cabinet (1). The output ends of the two snap-fit ​​mechanism assemblies (7) extend to both sides of the automatic cover assembly (2) at the top of the cabinet (1). The snap-fit ​​mechanism assembly (7) is used to press and fix the automatic cover assembly (2) in the closed state.

2. The anti-signal leakage structure based on an RFID card reader according to claim 1, characterized in that: The shielding strips one, two, and three are all made of conductive rubber.

3. The anti-signal leakage structure based on an RFID card reader according to claim 1, characterized in that: The cabinet (1) is equipped with a PLC controller (3), the top of the cabinet (1) is equipped with a push-button switch (10), the inner wall of the inner box (4) is equipped with a proximity sensor (9), the proximity sensor (9) and the push-button switch (10) are electrically connected to the PLC controller (3); the two buckle mechanism assemblies (7) are electrically connected to the PLC controller (3).

4. The anti-signal leakage structure based on an RFID card reader according to claim 3, characterized in that: The automatic cover assembly (2) includes a hinge assembly (21), a cover body (22), and an electric cylinder (23). The hinge assembly (21) extends from the top of the cabinet (1) to the bottom of the cabinet (1). The cover body (22) is fixedly connected to the hinge assembly (21). The output end of the electric cylinder (23) is connected to the hinge assembly (21) to control the hinge assembly (21) to rotate. The bottom end of the electric cylinder (23) is movably connected to a connecting seat (24), which is fixedly connected to the inner wall of the cabinet (1).

5. The anti-signal leakage structure based on an RFID card reader according to claim 4, characterized in that: The hinge assembly (21) includes a cylindrical shell (211), inside which a rotating column (212) is rotatably sleeved. The top of the cylindrical shell (211) has several semi-circular through slots. The side wall of the rotating column (212) is fixedly connected to several connecting arms (213). The connecting arms (213) pass through several semi-circular through slots and are connected to a connecting plate (214). The connecting plate (214) is fixedly connected to the cover plate body (22). The bottom of the cylindrical shell (211) has a semi-circular through slot. The bottom of the cylindrical shell (211) is fixedly connected to a toggle arm (215). The toggle arm (215) passes through the semi-circular through slot and is movably connected to the output end of the electric cylinder (23).

6. The anti-signal leakage structure based on an RFID card reader according to claim 3, characterized in that: The snap-fit ​​mechanism assembly (7) includes a cylindrical base (71), a knob (72) is rotatably sleeved in the inner cavity of the cylindrical base (71), a pressure plate (74) is fixedly connected to the top of the knob (72), the height of the pressure plate (74) is higher than the automatic cover assembly (2) in the closed state, a semi-ring pad (75) is fixedly connected to the bottom of the pressure plate (74), the bottom of the semi-ring pad (75) is set as a slope, a motor (73) is fixedly installed at the bottom of the cylindrical base (71), the output shaft of the motor (73) passes through the inner cavity of the cylindrical base (71) and is connected to the bottom end of the knob (72); the motor (73) is electrically connected to the PLC controller (3) through a relay and a contactor.

7. The anti-signal leakage structure based on an RFID card reader according to claim 6, characterized in that: The pressure plate (74) has a cross-section on one side.

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