CN205302310U - A fixed casing for RFID discerns sensor - Google Patents

Abstract

The utility model belongs to the technical field of the radio communication technique and specifically relates to a fixed casing for RFID discerns sensor. A fixed casing for RFID discerns sensor, includes shell, its characterized in that: the shell be the cuboid structure to be equipped with the recess of installation RFID discernment sensor in the shell, the bottom of recess is equipped with the coil mounting groove, and the top that is located the coil mounting groove is equipped with a plurality of gussets, be equipped with the fixed orifices on lieing in a side of shell, one side of fixed orifices is equipped with the pilot lamp jack, what be located the shell is equipped with all around the shell fixed orifices respectively. Compare with prior art, durable, strong adaptability lastingly uses the mode of whole encapsulating encapsulation, and discerning in the sensor crucial components and parts with REID, to seal the protection completely internal at firm epoxy resin cure, makes radio frequency component not receive the interference of external heat, light, dust and vibration, the performance that can remain stable.

Description

A fixed housing for RFID identification sensors

technical field

The utility model relates to the technical field of wireless communication, in particular to a fixed casing for an RFID identification sensor.

Background technique

RFID is a wireless communication technology that can identify specific targets and read and write related data through radio signals without establishing mechanical or optical contact between the identification system and specific targets. Its main features are: fast scanning, small size and various forms, Pollution resistance and durability, reusability, penetration and barrier-free reading, large data memory capacity and high security.

The basic working principle of RFID technology is that after the tag enters the magnetic field, it receives the radio frequency signal sent by the reader, and sends out the product information stored in the chip by virtue of the energy obtained by the induced current, or the tag actively sends a signal of a certain frequency. After the information is read and decoded, it is sent to the central information system for relevant data processing.

RFID identification sensors often work in some relatively harsh environments. It is necessary to seal and protect the radio frequency components, shield the dust and moisture from the outside, and maintain a stable temperature and vibration environment. The use requirements are low, and the production cost is low, and the product can maintain long-term stability.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model provides a fixed housing for RFID identification sensors, which completely seals and protects the RFID identification sensors in a firm epoxy resin, so that the RFID identification sensors are not affected by external factors and maintain its stable performance.

In order to achieve the above object, a fixed housing for RFID identification sensors is designed, including a housing, which is characterized in that: the housing is a cuboid structure, and the housing is provided with a groove for installing the RFID identification sensor, and the bottom of the groove There is a coil installation groove, and a number of inner ribs are arranged above the coil installation groove; a fixing hole is arranged on one side of the casing, and an indicator light socket is arranged on one side of the fixing hole; casings are respectively arranged around the casing Fixing hole.

The inner ribs have an L-shaped panel structure, and the top of the inner ribs is provided with a boss, and there are four inner ribs.

An annular boss is arranged above the fixing hole of the shell.

Described RFID identification sensor comprises radio frequency bottom board, radio frequency core board, radio frequency coil, connector, indicator light, radio frequency core board is connected with radio frequency bottom board by row pin, one side of radio frequency bottom board is welded connector and indicator lamp; The bottom is connected to the RF coil through the lead wire.

Epoxy resin potting glue is arranged in the cavity between the shell and the RFID identification sensor.

Compared with the prior art, the utility model is durable and adaptable, and adopts the way of encapsulating the whole glue to completely seal and protect the key components in the REID identification sensor in a solid epoxy resin curing body, so that the radio frequency components are not affected. External heat, light, dust, and vibration interference can maintain stable performance; the maintenance cost is zero, if the RF components of each product can be guaranteed to be fully qualified, there is almost no maintenance problem, and it is only related to the components of the RF components related to longevity.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a cross-sectional view of the structure of the utility model.

Fig. 3 is a schematic structural diagram of the RFID identification sensor.

Figure 4 is a schematic diagram of the shell structure.

Refer to Figure 1 to Figure 4, 1 is the shell, 2 is the RF bottom plate, 3 is the RF core board, 4 is epoxy resin potting glue, 5 is the RF coil, 6 is the connector, 7 is the indicator light, 8 is the fixing hole , 9 is an indicator light socket, 10 is a housing fixing hole, 11 is a coil mounting groove, 12 is a circular boss, and 13 is an inner rib plate.

detailed description

The utility model will be further described below according to the accompanying drawings.

As shown in Figures 1 to 4, the housing 1 has a cuboid structure, and the housing 1 is provided with a groove for installing an RFID identification sensor. The bottom of the groove is provided with a coil installation groove 11, and a number of Inner ribs 13; one side of the shell 1 is provided with a fixing hole 8, and one side of the fixing hole 8 is provided with an indicator light jack 9; the surroundings of the shell 1 are respectively provided with shell fixing holes 10.

The inner rib 13 has an L-shaped panel structure, and the top of the inner rib 13 is provided with a boss, and there are four inner ribs 13 .

An annular boss 12 is arranged above the housing fixing hole 10 .

The RFID identification sensor includes a radio frequency bottom board 2, a radio frequency core board 3, a radio frequency coil 5, a connector 6, and an indicator light 7. The radio frequency core board 3 is connected to the radio frequency bottom board 2 through a row of pins, and the connector 6 and the bottom side of the radio frequency bottom board 2 are welded. Indicator light 7; the bottom of the radio frequency base plate 2 is connected to the radio frequency coil 5 through a lead wire.

Epoxy resin potting glue 4 is arranged in the cavity between the shell 1 and the RFID identification sensor.

The RFID identification sensor is installed in the cavity inside the shell 1 as a whole, the connector 6 is inserted into the connector fixing hole 8 of the shell 1, and after the position is adjusted, it is fixed on the shell 1 with the fastening nut on the connector 6, and the indicator light 7 is inserted into the indicator light socket 9 of the housing 1, and the radio frequency coil 5 is installed in the coil installation groove 11 at the bottom of the inner cavity of the housing 1. After the radio frequency coil 5, the connector 6 and the indicator light 7 are installed, the Placed on the boss of the inner rib 13 inside the shell 1.

After the overall installation of the RFID identification sensor is completed, the weighed double-part epoxy resin potting compound 4 is prepared. After vacuum defoaming and uniform preparation, it is poured into the inner cavity of the shell 1 until it is completely filled. In the blending process of the resin potting compound, after waiting for a period of time to be completely cured, the encapsulation process of the RFID identification sensor in the housing 1 is completed.

The shell 1 is integrally injection-molded by a plastic mold for loading RFID identification sensors. The shell 1 will be fixed on the AVG trolley through four shell fixing holes 10. The end faces of the four fixing holes 10 have arc-shaped bosses 12 of about 1mm , to play a fixed support role, the shell 1 is a cavity structure, the bottom of the inner cavity has an installation groove 11 structure for fixing the radio frequency coil, and four inner ribs 13 structures are distributed around the inner cavity, which play two roles at the same time, the inner ribs The upper end surface of 13 is a boss for placing the base plate of the radio frequency base plate 2, and the inner rib plate 13 itself plays a role in strengthening the structure of the shell 1. Three openings are made on the side of the shell 1, and the middle large hole is used for installing the connector 6. The connector fixing hole 8, the two indicator light sockets arranged vertically are used to install the two LED lamp holders on the indicator light 7, and the thick glue on the back of the shell 1 is treated with shrinkage, and the extra space is dug out to make the shell 1 The wall thickness is kept uniform everywhere, so that the surface of the injection molded shell is free of defects.

The radio frequency bottom plate 2 installed in the shell 1 divides the inner cavity of the shell 1 into two separate spaces, and the radio frequency bottom plate 2 is made with two openings 16, which are poured into the cavity of the shell 1 during the encapsulation operation. After the epoxy resin potting glue fills the space above the RF base plate 2, it will flow into the space below the RF base plate 2 along the two openings 16 of the base plate, so that the entire RF component can be potted with epoxy resin The glue 4 is packaged in the cavity of the shell 1 .

Claims (5)

1. the fixing housing identifying sensor for RFID, including shell, it is characterized in that: described shell (1) is in rectangular structure, and it is provided with the groove installing RFID identification sensor in shell (1), the bottom of groove is provided with coil mounting groove (11), and what be positioned at coil mounting groove (11) is arranged over some inner reinforced plates (13); The one side being positioned at shell (1) is provided with fixing hole (8), and the side of fixing hole (8) is provided with display lamp jack (9); The surrounding being positioned at shell (1) is respectively equipped with shell fixing hole (10).

2. a kind of fixing housing identifying sensor for RFID according to claim 1, it is characterised in that: described inner reinforced plate (13) L-shaped panel construction, and the top of inner reinforced plate (13) is provided with boss, and inner reinforced plate (13) is provided with 4.

3. a kind of fixing housing identifying sensor for RFID according to claim 1, it is characterised in that: what be positioned at shell fixing hole (10) is arranged over round ring boss (12).

4. a kind of fixing housing identifying sensor for RFID according to claim 1, it is characterized in that: described RFID identifies that sensor includes radio frequency base plate (2), RF core plate (3), radio-frequency coil (5), adapter (6), display lamp (7), RF core plate (3) is connected with radio frequency base plate (2) by pricking with needle, a side-lower solder connector (6) of radio frequency base plate (2) and display lamp (7); The bottom of radio frequency base plate (2) connects radio-frequency coil (5) by going between.

5. a kind of fixing housing identifying sensor for RFID according to claim 1 or 4, it is characterised in that: described shell (1) and RFID identify in the cavity between sensor and are provided with epoxy resin embedding adhesive (4).