A high-frequency reading and writing device

Abstract

The present invention relates to the technical field of data processing readers and writers, and specifically relates to a high-frequency reading and writing device, which includes a circuit board. An inner housing is installed outside the circuit board, and an outer protective housing is adaptively installed outside the inner housing. The outer protective housing is disc-shaped, and an accommodation cavity for the rotation of the inner housing is provided inside. A flip cover is hinged on one side of the outer protective housing. An interface cavity is provided in the flip cover, and a closing plate is adapted to the opening of the interface cavity to seal the interface cavity. An external wiring outlet is provided on the flip cover, and a plugging block is snap-mounted on the external wiring outlet. Thus, the wiring part is in a weakly sealed environment of the interface cavity, reducing contact with external combustible dust. When a short circuit or electric arc occurs, the density of combustible dust in the interface cavity is low, making it difficult to cause an explosion or combustion. By flipping the flip cover downward, the flip cover supports the main body of the outer protective housing, so that only a relatively small fulcrum of the outer protective housing contacts the desktop, which can improve the heat dissipation of the circuit board.

Description

Technical Field

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

[0002] Industrial high-frequency readers and writers are core devices for the Internet of Things and industrial automation, mainly used for quickly identifying, collecting, and processing data of radio frequency identification (RFID) tags or sensors. Their technical basis is based on high-frequency (HF, 13.56 MHz) or ultra-high-frequency (UHF, 860 - 960 MHz) wireless communication protocols, and millisecond-level data transmission is achieved 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 readers and writers are also required to have certain explosion-proof performance. The Chinese invention patent with the application number 2024112890775 discloses an ultra-high-frequency industrial RFID reader and writer device, which improves the overall shock resistance of the device under the properties of the material by using a relatively displaceable housing mechanism, and at the same time can isolate the cable interface to protect the circuit board main body, reduce the probability of data line loss, and improve the heat dissipation performance to reduce 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 flammable dust environment, if sufficient ignition energy is generated due to poor contact, short circuit, or arc at the interface, it may cause an explosion. Therefore, the prior art does not effectively protect the interface. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to propose 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, resulting in a high risk of explosion in a flammable dust environment.

[0006] For the above purposes, the present invention provides a high-frequency reading and writing device, including a circuit board, with an inner housing installed outside the circuit board. It is characterized in that an outer protective shell is adaptively installed outside the inner housing. The outer protective shell is disc-shaped, and an accommodation cavity for the inner housing 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 the closed state, the interface cavity is part of the accommodation cavity. The inner housing is connected with a wiring arrangement box. A wiring post is installed on the circuit board, and the wiring post extends into the wiring arrangement box. The wiring post is connected with a data cable. The end of the data cable extends out of the wiring arrangement box, and a rubber sealing ring is provided at the extension. The end of the data cable is connected with a data interface. The data interface is installed on a closing plate. The closing plate is adapted to the opening of the interface cavity to seal the interface cavity. An external wiring outlet is provided on the flip cover, and a plugging block is snap-mounted on the external wiring outlet.

[0007] Optionally, there are at least two groups of the wiring arrangement boxes, which are respectively arranged on both sides of the inner housing for accommodating data interfaces of different wiring types.

[0008] Optionally, the wiring arrangement box includes a sorting cavity for accommodating the data cable. A fixing post is installed near the wiring post in the sorting cavity, and a moving shaft is installed at a position away from the fixing post in the sorting cavity. The moving shaft is parallel to the fixing post but has a height offset. Both ends of the moving shaft are respectively connected with sliders. Slide rails are provided on both sides of the sorting cavity, and the sliders are adaptively installed in the slide rails. A return spring is connected between the sliders and the ends of the slide rails. The data cable extends out from the wiring post, passes through the fixing post and the moving shaft, and finally extends out of the sorting cavity to be connected with a data interface. A closing plate is installed between the data interface and the wiring arrangement box.

[0009] Optionally, a plurality of extension outlets are provided on the wiring arrangement box, and a rubber sealing ring is wrapped around the periphery of the extension outlet. The rubber sealing ring is adapted to the data cable to seal the inside of the wiring arrangement box.

[0010] Optionally, an extension cylinder is installed on the inner housing, and an extension opening adapted to the extension cylinder is provided on the outer protective shell. A rotating shaft is installed in the extension cylinder, and a flip knob is installed on the rotating shaft.

[0011] Optionally, a heat dissipation plate is installed on the back of the inner housing, and a heat dissipation fan is installed on the heat dissipation plate. At the position directly opposite to the heat dissipation fan, a dust-proof gauze is installed on the outer protective shell for the heat dissipation fan to discharge the hot air flow.

[0012] Optionally, an air supply channel is provided on the outer protective shell, and the air supply channel extends to the connection part of the flip cover. A connection 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 communicated with the connection pipe for discharging part of the air flow into the interface cavity to keep a certain micro-high pressure state in the interface cavity all the time.

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

[0014] Optionally, a wiring notch for passing external wiring is provided on the plugging block, and a sealing rubber ring is wrapped around the wiring notch.

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

[0016] The beneficial effects of the present invention: The present invention provides a high-frequency reading and writing device. By setting a flip cover on the outer protective case, when carrying and transporting are required, the flip cover is closed. Under the double protection of the inner housing and the outer protective case, its anti-drop and anti-seismic performance is 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. At the same time, the data wiring is pulled outwards. After connecting the external wiring to the data interface, the closing plate is installed at the opening of the interface cavity, and at the same time, the plugging block is installed at the outlet of the external wiring, so that the wiring part is in a weakly sealed environment in the interface cavity, reducing contact with external combustible dust. When a short circuit or arc occurs, the density of combustible dust in the interface cavity is low, so it is difficult to cause an explosion or combustion. At the same time, when in use, by flipping the flip cover downwards, the flip cover supports the main body of the outer protective case, so that only a smaller fulcrum of the outer protective case contacts the desktop, which can improve the heat dissipation of the circuit board. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

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

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

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

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

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

[0023] Figure 6 Schematic diagram of the inner back of a high-frequency reading and writing device according to an embodiment of the present invention;

[0024] Figure 7 is Figure 6 Partial enlarged schematic diagram of part A in

[0025] Figure 8 Partial 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, plug; 1031, wiring notch; 104, interface cavity; 201, inner housing; 202, extension tube; 203, flip knob; 2031, rotating shaft; 204, wiring arrangement box; 2041, wiring post; 2042, data cable; 2043, fixing post; 2044, slider; 2045, return spring; 2046, slide rail; 2047, moving shaft; 205, circuit board; 206, positioning screw; 207, closing plate; 208, data interface; 301, heat dissipation plate; 302, heat dissipation fan; 303, dust-proof screen; 304, air supply channel; 305, connecting pipe; 306, air outlet; 401, hinge shaft; 402, suction cup. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be 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 have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0029] Such as Figures 1 to 8As shown in the figure, a specific embodiment of the present invention provides a high-frequency reading and writing device, which includes a circuit board 205. An inner housing 201 is installed outside the circuit board 205, and an outer protective housing 101 is adaptively installed outside the inner housing 201. The outer protective housing 101 is disc-shaped, and an accommodation cavity for the inner housing 201 to rotate is provided inside. A flip cover 102 is hinged on one side of the outer protective housing 101. An interface cavity 104 is provided in the flip cover 102. When the flip cover 102 is in the closed state, the interface cavity 104 is a part of the accommodation cavity. The inner housing 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 out of the wiring arrangement box 204. A rubber sealing ring is provided at the extending position. The end of the data cable 2042 is connected with a data interface 208. 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 to seal the interface cavity 104. An external wiring outlet is provided on the flip cover 102, and a plug 103 is snap-fitted on the external wiring outlet.

[0030] 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 double protection of the inner housing 201 and the outer protective housing 101, its anti-drop and anti-seismic performance is improved, and the internal data is protected from being lost due to the damage of the circuit board 205. When in use, the flip cover 102 is flipped open. At the same time, the data cable 2042 is pulled outwards. After connecting the external wiring 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 plug 103 is installed at the external wiring outlet, so that the wiring part is in a weakly sealed environment of the interface cavity 104, reducing the contact with external combustible dust. When a short circuit or arc occurs, the density of combustible dust in the interface cavity 104 is low, so it is difficult to cause an explosion or combustion. At the same time, when in use, by flipping the flip cover 102 downwards, the flip cover 102 supports the main body of the outer protective housing 101, so that only a small fulcrum of the outer protective housing 101 contacts the desktop, which can improve the heat dissipation of the circuit board 205.

[0031] In some optional specific embodiments, as Figures 3 to 7 shown, there are at least two groups of the wiring arrangement boxes 204, which are respectively arranged on both sides of the inner housing 201 and used to accommodate data interfaces 208 of different wiring types. When it is necessary to use a certain type of data interface 208 to connect with the outside, 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, as Figures 3 to 7As shown, the wiring arrangement box 204 includes an arrangement cavity for accommodating the data cable 2042. A fixing post 2043 is installed near the terminal post 2041 in the arrangement cavity, and a moving shaft 2047 is installed at a position away from the fixing post 2043 in the arrangement cavity. The moving shaft 2047 is parallel to the fixing post 2043 but has a height offset. Both ends of the moving shaft 2047 are respectively connected with sliders 2044. Slide rails 2046 are provided on both sides of the arrangement cavity, and the sliders 2044 are adaptively installed in the slide rails 2046. A return spring 2045 is connected between the sliders 2044 and the ends of the slide rails 2046. The data cable 2042 extends out from the terminal post 2041, passes through the fixing post 2043 and the moving shaft 2047, and finally extends out from the arrangement cavity and is connected with a data interface 208. A closing plate 207 is installed between the data interface 208 and the wiring arrangement box 204. In the storage state, the return spring 2045 makes the moving shaft 2047 slightly tighten the data cable 2042, so as to store the data cable 2042 in the arrangement cavity. The closing plate 207 closely adheres to the wiring arrangement box 204 under the action of the pulling force, which is convenient for rotating the inner housing 201. When in use, the closing plate 207 is pulled, and the moving shaft 2047 moves outwards, then the data cable 2042 can be pulled out for external connection.

[0033] In some optional specific embodiments, as Figure 7 shown, a plurality of extension openings are provided on the wiring arrangement box 204. A rubber sealing ring is wrapped around the periphery of the extension opening, and the rubber sealing ring is adapted to the data cable 2042 to seal the inside of the wiring arrangement box 204 and prevent dust from entering.

[0034] In some optional specific embodiments, as Figure 5 shown, an extension cylinder 202 is installed on the inner housing 201, and an extension opening adapted to the extension cylinder 202 is provided on the outer protective shell 101. A rotating shaft 2031 is installed in the extension cylinder 202, and a flipping knob 203 is installed on the rotating shaft 2031. During storage, the flipping knob 203 closes the extension cylinder 202. When rotating the inner housing 201, the flipping knob 203 is rotated to make it vertical, and then the flipping knob 203 is rotated to drive the entire inner housing 201 to rotate inside the outer protective shell 101.

[0035] In some optional specific embodiments, as Figure 6 and Figure 8 shown, a heat dissipation plate 301 is installed on the back of the inner housing 201, and a heat dissipation fan 302 is installed on the heat dissipation plate 301. At a position directly opposite to the heat dissipation fan 302, a dust-proof screen 303 is installed on the outer protective shell 101 for the heat dissipation fan 302 to discharge the hot air flow.

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

[0037] In some optional specific embodiments, such as Figure 8 As shown, a hinge shaft 401 is installed at the end of the outer protective shell 101 away from the flip cover 102. A suction cup 402 is installed on the hinge shaft 401, which is used to adsorb the outer protective shell 101 on the desktop. The flip knob 203 is alternately connected by a plurality of springs and the board surface in the radial direction of the rotating shaft 2031, so that the flip knob 203 has a certain elasticity. During use, when an explosion occurs at the wiring part, since the suction cup 402 adsorbs it on the desktop and the explosion occurs in the interface cavity 104, the outer protective shell 101 will flip. The flip knob 203 has a certain elasticity. After the outer protective shell 101 flips 180 degrees, the flip knob 203 contacts the desktop first for buffering and reducing the impact.

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

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

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

[0041] Working principle of the present invention: 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 double protection of the inner housing 201 and the outer protective shell 101, its anti-drop and anti-seismic performance is improved, protecting the internal data from being lost due to damage to the circuit board 205. When in use, the flip cover 102 is flipped open. At the same time, the data cable 2042 is pulled outwards. After connecting the external wiring to the data interface 208, the closing plate 207 is installed at the opening of the interface cavity 104, and the plug 103 is installed at the external wiring outlet, so that the wiring part is in a weakly sealed environment in the interface cavity 104, reducing the contact with external combustible dust. When a short circuit or arc occurs, the density of combustible dust in the interface cavity 104 is low, so it is difficult to cause an explosion or combustion. At the same time, when in use, by flipping the flip cover 102 downwards, 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.

[0042] When an explosion occurs at the wiring part, since the suction cup 402 adsorbs it to the desktop and the explosion occurs in the interface cavity 104, the outer protective shell 101 is flipped. The flip knob 203 has a certain elasticity. After the outer protective shell 101 is flipped 180 degrees, the flip knob 203 contacts the desktop first for buffering and reducing the impact.

[0043] Those of ordinary skill in the art should understand that the discussion of any embodiment above is only exemplary 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 can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0044] The present invention aims 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 shall be included within the protection scope of the present invention.

Claims

1. A high-frequency reading and writing device, comprising a circuit board (205), and an inner housing (201) is installed outside the circuit board (205), characterized in that, An outer protective case (101) is adaptively installed outside the inner case (201). The outer protective case (101) is disc-shaped and has an accommodation cavity inside for the inner case (201) to rotate. A flip cover (102) is hinged on one side of the outer protective case (101). An interface cavity (104) is provided in the flip cover (102). When the flip cover (102) is in the closed state, the interface cavity (104) is part of the accommodation cavity. The inner case (201) is connected with a wiring arrangement box (204). A wiring terminal (2041) is installed on the circuit board (205). The wiring terminal (2041) extends into the wiring arrangement box (204). The wiring terminal (2041) is connected with a data cable (2042). The end of the data cable (2042) extends out of the wiring arrangement box (204). A rubber sealing ring is provided at the extending position. The end of the data cable (2042) is connected with a data interface (208). 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) to seal the interface cavity (104). An external wiring outlet is provided on the flip cover (102), and a plug (103) is snap-fitted on the external wiring outlet; in the working state, the flip cover (102) is flipped open. At the same time, the data cable (2042) is pulled outwards. After connecting the external wiring 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 plug (103) is installed at the external wiring outlet, so that the wiring part is in a weakly sealed environment of the interface cavity (104).

2. The high-frequency reading and writing device according to claim 1, characterized in that, There are at least two groups of the wiring arrangement boxes (204), which are respectively arranged on both sides of the inner case (201) and used for accommodating 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) includes a sorting cavity for accommodating the data cable (2042). A fixing column (2043) is installed near the wiring terminal (2041) in the sorting cavity. A moving shaft (2047) is installed at a position away from the fixing column (2043) in the sorting cavity. The moving shaft (2047) is parallel to the fixing column (2043) but has a height offset. Both ends of the moving shaft (2047) are respectively connected with a slider (2044). Slide rails (2046) are provided on both sides of the sorting cavity. The slider (2044) is adaptively installed in the slide rail (2046). A return spring (2045) is connected between the slider (2044) and the end of the slide rail (2046). The data cable (2042) extends out from the wiring terminal (2041), passes through the fixing column (2043) and the moving shaft (2047), and finally extends out of the sorting cavity and is connected with a data interface (208). A closing plate (207) is installed between the data interface (208) and the wiring arrangement box (204).

4. The high-frequency reading and writing device according to claim 1, wherein A plurality of extending outlets are provided on the wiring arrangement box (204). A rubber sealing ring is wrapped around the periphery of the extending outlet. The rubber sealing ring is adapted to the data cable (2042) to seal the inside of the wiring arrangement box (204).

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

6. The high-frequency reading and writing device according to claim 5, characterized in that, A heat dissipation plate (301) is installed on the back of the inner housing (201). A heat dissipation fan (302) is installed on the heat dissipation plate (301). At the position opposite to the heat dissipation fan (302), a dust-proof screen (303) is installed on the outer protective shell (101) for the heat dissipation fan (302) to discharge the hot air flow.

7. The high-frequency reading and writing device according to claim 6, characterized in that, An air supply channel (304) is provided on the outer protective shell (101). The air supply channel (304) extends to the connection part of the flipping cover (102). A connecting pipe (305) is connected between the flipping cover (102) and the outer protective shell (101). An air outlet (306) is provided in the flipping cover (102). The air outlet (306) is communicated with the connecting pipe (305) for discharging part of the air flow into the interface cavity (104) so that a certain micro-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 flipping cover (102). A suction cup (402) is installed on the hinge shaft (401) for adsorbing the outer protective shell (101) on the desktop. The flipping knob (203) is alternately connected by a plurality of springs and plate surfaces in the radial direction of the rotating shaft (2031) so that the flipping knob (203) has a certain elasticity.

9. A high-frequency reading and writing device according to claim 1, characterized in that, A wiring notch (1031) for external wiring to pass through is provided on the plugging block (103), and a sealing rubber ring is wrapped at the wiring notch (1031).

10. A high-frequency reading and writing device according to claim 1, characterized in that, A plurality of positioning holes are provided on the circuit board (205). A plurality of positioning screws (206) adapted to the positioning holes are installed in the inner housing (201) to fix the circuit board (205).

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