High-frequency read-write device

Abstract

The invention relates to the technical field of data processing reader-writers, in particular to a high-frequency read-write device which comprises a circuit board, an inner shell is installed outside the circuit board, an outer protective shell is installed outside the inner shell in a matched mode, the outer protective shell is in a disc shape, a containing cavity for the inner shell to rotate is formed in the outer protective shell, and a turnover cover is hinged to one side of the outer protective shell. A connector cavity is formed in the overturning cover, the sealing plate is matched with an opening of the connector cavity to seal the connector cavity, an external wire outlet is formed in the overturning cover, and a sealing plug is installed on the external wire outlet in a buckled mode. Therefore, the wiring position is in a weak sealing environment of the interface cavity, the contact with external flammable dust is reduced, and when short circuit or electric arc occurs, the flammable dust density in the interface cavity is low, so that explosion or combustion is difficult to cause. The overturning cover is overturned downwards, and the overturning cover supports the outer protective shell body, so that the outer protective shell is in contact with a table top only through a small fulcrum, and heat dissipation of the circuit board can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing reader-writers, and in particular to a high-frequency reader-writer device. Background Art

[0002] Industrial high-frequency readers are core devices for the Internet of Things and industrial automation, and are mainly used to quickly identify, collect and process data from radio frequency tags (RFID) or sensors. Its technical foundation is based on high-frequency (HF, 13.56MHz) or ultra-high-frequency (UHF, 860-960MHz) wireless communication protocols, and achieves millisecond-level data transmission through electromagnetic coupling or backscattering principles, supporting international standards such as ISO / IEC 14443 and ISO 18000-6C.

[0003] In a working environment with explosive dust, high-frequency reading and writing devices are also required to have certain explosion-proof performance. The Chinese invention patent with application number 2024112890775 discloses an ultra-high frequency industrial RFID reader-writer device. By utilizing a relatively displaceable shell mechanism, the overall impact resistance of the equipment is improved under the material's own properties. At the same time, it can isolate the cable interface, protect the circuit board body, reduce the probability of data line loss, and improve heat dissipation performance, reducing the impact of heat dissipation on the function.

[0004] However, the applicant has found that the prior art has at least the following problems: the connection between the data interface and the external interface is in an open state. In a combustible dust environment, if the interface generates sufficient ignition energy due to poor contact, short circuit or electric arc, it may cause an explosion. Therefore, the prior art does not provide effective protection for the interface. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a high-frequency reading and writing device to solve the problem that the connection between the data interface and the external interface is in an open state and there is a high risk of explosion in a combustible dust environment.

[0006] Based on the above purpose, the present invention provides a high-frequency reading and writing device, including a circuit board, an inner shell body is installed on the outside of the circuit board, and its characteristics are that an outer protective shell is adapted to be installed on the outside of the inner shell body, the outer protective shell is disc-shaped, and a accommodating cavity for the inner shell body to rotate is provided inside, a flip cover is hinged on one side of the outer protective shell, an interface cavity is provided in the flip cover, when the flip cover is in a closed state, the interface cavity is a part of the accommodating cavity, the inner shell body is connected to a wiring sorting box, a terminal post is installed on the circuit board, the terminal post extends into the wiring sorting box, the terminal post is connected to a data cable, the end of the data cable extends from the wiring sorting box, a rubber sealing ring is provided at the protruding part, the end of the data cable is connected to a data interface, the data interface is installed on a closing plate, the closing plate is adapted to the opening of the interface cavity, and the butt cavity is sealed, an external wiring outlet is provided on the flip cover, and a sealing plug is buckled and installed on the external wiring outlet.

[0007] Optionally, the wiring arrangement box has at least two groups, which are respectively arranged on both sides of the inner shell body and are used to accommodate data interfaces of different wiring types.

[0008] Optionally, the wiring organizing box includes a organizing cavity for accommodating data cables, a fixed column is installed in the organizing cavity near the terminal post, a movable axis is installed in the organizing cavity away from the fixed column, the movable axis is parallel to the fixed column but highly offset, sliders are respectively connected at both ends of the movable axis, slide rails are provided on both sides of the organizing cavity, the sliders are adapted to be installed in the slide rails, reset springs are connected to the sliders and the ends of the slide rails, the data cables extend from the terminal post, pass through the fixed column and the movable axis, and finally extend from the organizing cavity to be connected to the data interface, and a closing plate is installed between the data interface and the wiring organizing box.

[0009] Optionally, the wiring arrangement box is provided with a plurality of protruding openings, and the protruding openings are wrapped around rubber sealing rings, which are adapted to the data cables to seal the interior of the wiring arrangement box.

[0010] Optionally, an extension tube is installed on the inner shell body, an extension opening matched with the extension tube is opened on the outer protective shell, a rotating shaft is installed in the extension tube, and a flip knob is installed on the rotating shaft.

[0011] Optionally, a heat sink is installed on the back of the inner shell, a heat sink fan is installed on the heat sink, and a dust-proof mesh is installed on the outer protective shell at a position directly opposite the heat sink fan, which is used for the heat sink fan to discharge hot air.

[0012] Optionally, an air supply channel is provided on the outer protective shell, and the air supply channel extends to the connection of the flip cover. A connecting pipe is connected between the flip cover and the outer protective shell. An air outlet is provided in the flip cover, and the air outlet is connected to the connecting pipe, which is used to discharge part of the airflow into the interface cavity, so that the interface cavity always maintains a certain slightly high pressure state.

[0013] Optionally, a hinge shaft is installed at the end of the outer protective shell away from the flip cover, and a suction cup is installed on the hinge shaft for adsorbing the outer protective shell on the desktop. The flip knob is formed by multiple springs alternately connected to the plate surface in the radial direction of the rotating axis, so that the flip knob has a certain elasticity.

[0014] Optionally, the sealing plug is provided with a wiring gap for external wiring to pass through, and the wiring gap is wrapped with a sealing rubber ring.

[0015] Optionally, a plurality of positioning holes are provided on the circuit board, and a plurality of positioning screws matching the positioning holes are installed in the inner shell to fix the circuit board.

[0016] Beneficial effects of the present invention: The present invention provides a high-frequency reading and writing device, which is provided with a flip cover on the outer protective shell. When it needs to be carried and transported, the flip cover is closed. Under the dual protection of the inner shell and the outer protective shell, its anti-fall and anti-vibration performance are improved, and the internal data is protected from being lost due to damage to the circuit board. When in use, the flip cover is flipped open, and at the same time, the data cable is pulled outward. After the external wiring is connected to the data interface, the closing plate is installed at the opening of the interface cavity, and the sealing plug is installed at the external wiring outlet, so that the wiring point is in a weakly sealed environment of the interface cavity, reducing contact with external combustible dust. When a short circuit or an arc occurs, the density of the combustible dust in the interface cavity is low, and it is difficult to cause an explosion or combustion. At the same time, when in use, the flip cover is flipped downward to support the main body of the outer protective shell, so that only a smaller fulcrum of the outer protective shell contacts the desktop, which can improve the heat dissipation of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is an overall schematic diagram of a high-frequency reading and writing device according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the working state of a high-frequency reading and writing device according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of a high-frequency reading and writing device according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the installation of a circuit board of a high-frequency reading and writing device according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of a rotary switch of a high-frequency reading and writing device according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the internal back side of a high-frequency reading and writing device according to an embodiment of the present invention;

[0024] Figure 7 for Figure 6 A partial enlarged schematic diagram of part A;

[0025] Figure 8 It is a partial cross-sectional schematic diagram of a high-frequency reading and writing device according to an embodiment of the present invention.

[0026] The markings in the figure are: 101, outer protective shell; 102, flip cover; 103, sealing plug; 1031, wiring gap; 104, interface cavity; 201, inner shell; 202, extension tube; 203, flip knob; 2031, rotating shaft; 204, wiring arrangement box; 2041, terminal; 2042, data cable; 2043, fixing column; 2044, slider; 2045, reset spring; 2046, slide rail; 2047, moving shaft; 205, circuit board; 206, positioning screw; 207, closing plate; 208, data interface; 301, heat sink; 302, heat dissipation fan; 303, dust-proof gauze; 304, air supply channel; 305, connecting pipe; 306, air outlet; 401, hinge axis; 402, suction cup. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] like Figures 1 to 8As shown, a specific embodiment of the present invention provides a high-frequency reading and writing device, including a circuit board 205, an inner shell 201 is installed on the outside of the circuit board 205, an outer protective shell 101 is adapted to be installed on the outside of the inner shell 201, the outer protective shell 101 is disc-shaped, and a accommodating cavity for the inner shell 201 to rotate is opened inside, a flip cover 102 is hinged on one side of the outer protective shell 101, and an interface cavity 104 is provided in the flip cover 102. When the flip cover 102 is in a closed state, the interface cavity 104 is a part of the accommodating cavity, and the inner shell 201 is connected to a wiring arrangement box 204. The circuit board 205 A terminal post 2041 is installed on it, and the terminal post 2041 extends into the terminal arrangement box 204. The terminal post 2041 is connected to a data cable 2042. The end of the data cable 2042 extends out from the terminal arrangement box 204, and a rubber sealing ring is provided at the extended position. The end of the data cable 2042 is connected to a data interface 208, and the data interface 208 is installed on a closing plate 207. The closing plate 207 is adapted to the opening of the interface cavity 104, and the cavity 104 is sealed. An external wiring outlet is opened on the flip cover 102, and a sealing plug 103 is snap-fitted onto the external wiring outlet.

[0030] When the high-frequency reader / writer is not in use and needs to be carried and transported, the flip cover 102 is closed. Under the dual protection of the inner shell 201 and the outer protective shell 101, its anti-fall and anti-vibration performance are improved, and the internal data is protected from being lost due to damage to the circuit board 205. When in use, the flip cover 102 is flipped open, and at the same time, the data cable 2042 is pulled outward. After the external wiring is connected to the data interface 208, the closing plate 207 is installed at the opening of the interface cavity 104, and the sealing plug 103 is installed at the external wiring outlet, so that the wiring is in a weakly sealed environment of the interface cavity 104, reducing contact with external combustible dust. When a short circuit or arc occurs, the density of combustible dust in the interface cavity 104 is low, and it is difficult to cause explosion or combustion. At the same time, when in use, by flipping the flip cover 102 downward, the flip cover 102 supports the main body of the outer protective shell 101, so that only a small fulcrum of the outer protective shell 101 contacts the desktop, which can improve the heat dissipation of the circuit board 205.

[0031] In some optional specific embodiments, such as Figures 3 to 7 As shown, the wiring arrangement boxes 204 have at least two groups, which are respectively arranged on both sides of the inner housing 201, for accommodating data interfaces 208 of different wiring types. When a data interface 208 of a certain type needs to be used for external connection, the inner housing 201 is rotated to align the corresponding wiring arrangement box 204 with the flip cover 102.

[0032] In some optional specific embodiments, such as Figures 3 to 7As shown, the wiring sorting box 204 includes a sorting cavity for accommodating a data cable 2042, a fixed column 2043 is installed in the sorting cavity near the terminal post 2041, and a movable shaft 2047 is installed in the sorting cavity away from the fixed column 2043. The movable shaft 2047 is parallel to the fixed column 2043 but highly misaligned, and sliders 2044 are connected to both ends of the movable shaft 2047. Slide rails 2046 are provided on both sides of the sorting cavity, and the slider 2044 is adapted to be installed in the slide rail 2046. Reset springs 2045 are connected to the ends of the slider 2044 and the slide rail 2046. The data cable 2042 extends from the terminal post 2041, passes through the fixed column 2043 and the movable shaft 2047, and finally extends from the sorting cavity to be connected to the data interface 208, and a closing plate 207 is installed between the data interface 208 and the wiring sorting box 204. In the storage state, the return spring 2045 causes the movable shaft 2047 to slightly tighten the data cable 2042, thereby storing the data cable 2042 in the sorting cavity. The closing plate 207 is tightly attached to the wiring sorting box 204 under the action of tension, which facilitates the rotation of the inner shell 201. When in use, the closing plate 207 is pulled, and the movable shaft 2047 moves outward, so that the data cable 2042 can be pulled out for external connection.

[0033] In some optional specific embodiments, such as Figure 7 As shown, the wiring arrangement box 204 is provided with a plurality of protruding openings, and the protruding openings are surrounded by rubber sealing rings, which are adapted to the data cable 2042 to seal the interior of the wiring arrangement box 204 to prevent dust from entering.

[0034] In some optional specific embodiments, such as Figure 5 As shown, the inner shell 201 is provided with an extension tube 202, the outer protective shell 101 is provided with an extension port adapted to the extension tube 202, a rotation shaft 2031 is installed in the extension tube 202, and a flip knob 203 is installed on the rotation shaft 2031. When stored, the flip knob 203 closes the extension tube 202, and when the inner shell 201 is rotated, the flip knob 203 is rotated to make it vertical, and then the flip knob 203 is rotated to drive the entire inner shell 201 to rotate inside the outer protective shell 101.

[0035] In some optional specific embodiments, such as Figure 6 and Figure 8 As shown, a heat sink 301 is installed on the back of the inner shell 201, and a heat dissipation fan 302 is installed on the heat sink 301. A dustproof mesh 303 is installed on the outer protective shell 101 at a position directly opposite to the heat dissipation fan 302, which is used for the heat dissipation fan 302 to discharge the hot air flow.

[0036] In some optional specific embodiments, such as Figure 8As shown, the outer protective shell 101 is provided with an air supply channel 304, which extends to the connection of the flip cover 102, and a connecting pipe 305 is connected between the flip cover 102 and the outer protective shell 101. An air outlet 306 is provided in the flip cover 102, and the air outlet 306 is connected to the connecting pipe 305, which is used to discharge part of the airflow into the interface cavity 104, so that the interface cavity 104 always maintains a certain micro-high pressure state. Reduce the risk of external dust entering.

[0037] In some optional specific embodiments, such as Figure 8 As shown, the end of the outer protective shell 101 away from the flip cover 102 is equipped with a hinge shaft 401, and a suction cup 402 is installed on the hinge shaft 401, which is used to absorb the outer protective shell 101 on the desktop. The flip knob 203 is formed by multiple springs alternately connected with the plate surface in the radial direction of the rotating shaft 2031, so that the flip knob 203 has a certain elasticity. When in use, when an explosion occurs at the connection point, the suction cup 402 absorbs it on the desktop, and the explosion occurs in the interface cavity 104, so that the outer protective shell 101 flips. The flip knob 203 has a certain elasticity. After the outer protective shell 101 flips 180 degrees, the flip knob 203 first contacts the desktop to buffer and reduce the impact.

[0038] In some optional specific embodiments, the flip cover 102 and the outer protective shell 101 are hinged.

[0039] In some optional specific embodiments, the sealing plug 103 is provided with a wiring gap 1031 for external wiring to pass through, and the wiring gap 1031 is wrapped with a sealing rubber ring.

[0040] In some optional specific embodiments, a plurality of positioning holes are opened on the circuit board 205 , and a plurality of positioning screws 206 matched with the positioning holes are installed in the inner shell 201 to fix the circuit board 205 .

[0041] The working principle of the present invention is as follows: when the high-frequency reading and writing device is not in use and needs to be carried and transported, the flip cover 102 is closed. Under the dual protection of the inner shell 201 and the outer protective shell 101, its anti-fall and anti-vibration performance is improved, and the internal data is protected from being lost due to damage to the circuit board 205. When in use, the flip cover 102 is flipped open, and at the same time, the data cable 2042 is pulled outward, and after the external wiring is connected to the data interface 208, the closing plate 207 is installed at the opening of the interface cavity 104. The sealing plug 103 is installed at the external wiring outlet, so that the wiring point is in a weakly sealed environment of the interface cavity 104, reducing contact with external combustible dust. When a short circuit or an arc occurs, the density of the combustible dust in the interface cavity 104 is low, and it is difficult to cause an explosion or combustion. At the same time, when in use, by flipping the flip cover 102 downward, the flip cover 102 supports the main body of the outer protective shell 101, so that only a smaller fulcrum of the outer protective shell 101 contacts the desktop, which can improve the heat dissipation of the circuit board 205.

[0042] When an explosion occurs at the connection point, the suction cup 402 adsorbs it on the desktop, and the explosion occurs in the interface cavity 104, causing the outer protective shell 101 to flip. The flip knob 203 has a certain elasticity. After the outer protective shell 101 flips 180 degrees, the flip knob 203 first contacts the desktop to buffer and reduce the impact.

[0043] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0044] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-frequency reading and writing device, comprising a circuit board (205), wherein an inner housing (201) is mounted outside the circuit board (205), characterized in that: The outer shell (201) is adapted to be mounted with an outer protective shell (101) on the outside. The outer protective shell (101) is in the shape of a disk and is provided with a housing cavity for the inner shell (201) to rotate. A flip cover (102) is hingedly connected to one side of the outer protective shell (101). An interface cavity (104) is provided in the flip cover (102). When the flip cover (102) is in a closed state, the interface cavity (104) is a part of the housing cavity. The inner shell (201) is connected with a wiring arrangement box (204). A wiring post (2041) is installed on the circuit board (205). The wiring post (2041) extends into the wiring arrangement box (204). The wiring post (2041) is connected with a data cable (2042). The end of the data cable (2042) extends from the wiring arrangement box (204). A rubber sealing ring is provided, and the end of the data cable (2042) is connected to a data interface (208), the data interface (208) is installed on a closing plate (207), the closing plate (207) is matched with the opening of the interface cavity (104), and the cavity (104) is sealed, and an external wiring outlet is provided on the flip cover (102), and a sealing plug (103) is buckled and installed on the external wiring outlet; in the working state, the flip cover (102) is flipped open, and at the same time, the data cable (2042) is pulled outward, and after the external wiring is connected to the data interface (208), the closing plate (207) is installed at the opening of the interface cavity (104), and at the same time, the sealing plug (103) is installed at the external wiring outlet, so that the wiring is in a weakly sealed environment of the interface cavity (104).

2. A high frequency reading and writing device according to claim 1, characterized in that: The wiring arrangement boxes (204) have at least two groups, which are respectively arranged on two sides of the inner shell (201) and are used to store data interfaces (208) of different wiring types.

3. A high frequency reading and writing device according to claim 1, characterized in that: The wiring arrangement box (204) comprises an arrangement cavity for accommodating data cables (2042); a fixed column (2043) is installed in the arrangement cavity near the wiring column (2041); a movable shaft (2047) is installed in the arrangement cavity away from the fixed column (2043); the movable shaft (2047) is parallel to the fixed column (2043) but is highly misaligned; both ends of the movable shaft (2047) are respectively connected to sliders (2044); and slide rails (2046) are provided on both sides of the arrangement cavity. The slider (2044) is adapted to be installed in the slide rail (2046), and a return spring (2045) is connected to the end of the slider (2044) and the slide rail (2046). The data cable (2042) extends from the terminal (2041), passes through the fixed column (2043) and the movable shaft (2047), and finally extends from the sorting cavity to be connected to the data interface (208). A closing plate (207) is installed between the data interface (208) and the wiring sorting box (204).

4. A high frequency reading and writing device according to claim 1, characterized in that: The wiring arrangement box (204) is provided with a plurality of protruding openings, and the protruding openings are surrounded by rubber sealing rings, which are adapted to the data cable (2042) to seal the interior of the wiring arrangement box (204).

5. A high frequency reading and writing device according to claim 1, characterized in that: An extension tube (202) is installed on the inner shell (201), an extension opening adapted to the extension tube (202) is provided on the outer protective shell (101), a rotating shaft (2031) is installed in the extension tube (202), and a flip knob (203) is installed on the rotating shaft (2031).

6. A high frequency reading and writing device according to claim 5, characterized in that: A heat sink (301) is installed on the back of the inner shell (201), a heat sink fan (302) is installed on the heat sink (301), and a dustproof gauze (303) is installed on the outer protective shell (101) at a position directly opposite to the heat sink fan (302) for the heat sink fan (302) to discharge hot air.

7. A high frequency reading and writing device according to claim 6, characterized in that: The outer protective shell (101) is provided with an air supply channel (304), the air supply channel (304) extending to the connection point of the flip cover (102), a connecting pipe (305) being connected between the flip cover (102) and the outer protective shell (101), an air outlet (306) being provided in the flip cover (102), the air outlet (306) being in communication with the connecting pipe (305) and being used to discharge part of the airflow into the interface cavity (104), so that a certain slightly high pressure state is always maintained in the interface cavity (104).

8. A high frequency reading and writing device according to claim 7, characterized in that: A hinge shaft (401) is installed at the end of the outer protective shell (101) away from the flip cover (102), and a suction cup (402) is installed on the hinge shaft (401) for adsorbing the outer protective shell (101) on the desktop. The flip knob (203) is formed by a plurality of springs alternately connected to the plate surface in the radial direction of the rotating shaft (2031), so that the flip knob (203) has a certain elasticity.

9. A high frequency reading and writing device according to claim 1, characterized in that: The sealing plug (103) is provided with a wiring notch (1031) for external wiring to pass through, and the wiring notch (1031) is wrapped with a sealing rubber ring.

10. A high frequency reading and writing device according to claim 1, characterized in that: The circuit board (205) is provided with a plurality of positioning holes, and the inner shell (201) is provided with a plurality of positioning screws (206) adapted to the positioning holes to fix the circuit board (205).

Images