Shielding cover structure suitable for detection module and radio frequency power supply

Abstract

The utility model discloses a shielding cover structure suitable for a detection module and a radio frequency power supply, the detection module is arranged in a first accommodating cavity of a cover body, and a radio frequency output joint is arranged in a second accommodating cavity of an insulating sheath, so that the radio frequency output joint is effectively isolated from the detection module, and the detection module is prevented from being damaged. The direct coupling path of electromagnetic radiation is reduced, it is ensured that the detection module can work normally in an interference-free environment, and the accuracy and reliability of measurement are improved. And secondly, the design of the insulating sheath not only provides physical isolation, but also has good insulating property and can bear high voltage without breakdown, and the insulating sheath is used to ensure that a high-voltage signal is not in direct contact with the detection module, so that the risk of high-voltage breakdown is avoided, and the detection module can operate safely in a high-voltage environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of radio frequency power supply, more particularly to a shielding cover structure suitable for detection module and radio frequency power supply. BACKGROUND

[0002] In a radio frequency (RF) system, the role of the match is to ensure the impedance matching between the source and the load, so as to maximize the power transmission and minimize the reflection. When it comes to detecting the radio frequency output characteristics of the match, such as current, voltage, impedance, phase (angle), power and other parameters, it is usually necessary to use a sensor-PCB detection module. The electronic components on the sensor-PCB detection module are very sensitive to radio frequency signals, so they are easily affected by electromagnetic interference (EMI) from the radio frequency output of the match, especially high-voltage and high-current radio frequency signals may cause induced noise or directly damage sensitive components. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the utility model provides a shielding cover structure suitable for detection module to solve the problem that high-voltage electromagnetic radiation generated by the radio frequency output connector of the match interferes with the detection module, resulting in the detection module cannot work normally.

[0004] The utility model technical scheme is as follows: a shielding cover structure suitable for detection module, comprising:

[0005] Cover body, the cover body is provided with first accommodating cavity, the first accommodating cavity is used for installing detection module;

[0006] Insulating sheath, the insulating sheath is installed on the cover body, the insulating sheath is provided with second accommodating cavity, the second accommodating cavity is used for installing radio frequency output connector.

[0007] Further, the cover body includes a base and an upper cover, the upper cover covers the open mouth of the base and is fixedly connected with the base, the upper cover is provided with a plurality of first mounting holes penetrating the thickness of the upper cover, the base is provided with a plurality of second mounting holes corresponding to the plurality of first mounting holes, one end of the fastener passes through the first mounting hole and the detection module in turn and is inserted into the second mounting hole corresponding to the first mounting hole.

[0008] Further, the cover body is provided with a first through hole, the first through hole is arranged along the thickness direction of the cover body, and at least a part of the insulating sheath is located in the first through hole.

[0009] Further, one side of the cover body is provided with a second through hole and a wire group, the second through hole is communicated with the first accommodating cavity, and the second through hole is arranged along the length direction of the cover body, and the wire group is connected through the second through hole and the detection module.

[0010] Further, the wire group comprises a wire protection block and a wire protection tube, the third through hole is arranged in the wire protection block and communicated with the second through hole, the wire protection tube is connected with the third through hole in a matched mode, and at least two transmission lines are arranged in the wire protection tube, and an SMA connector is arranged at the end of each transmission line.

[0011] Further, the insulating sheath comprises a cylindrical portion and a mounting portion protruding outward along the radial direction of the cylindrical portion, the second accommodating cavity is arranged in the cylindrical portion and extends along the axial direction of the cylindrical portion to penetrate the front and back end faces of the cylindrical portion, and a third mounting hole penetrating the thickness of the mounting portion is arranged on the mounting portion and used for matched connection with a fastener.

[0012] Further, an annular boss is arranged in the second accommodating cavity and used for abutting with the end of the radio frequency output connector.

[0013] Further, a fourth mounting hole is arranged on the sidewall of the cylindrical portion and penetrates the wall thickness of the cylindrical portion and is communicated with the second accommodating cavity.

[0014] Further, the first through hole comprises a first sub-through hole, a second sub-through hole and a third sub-through hole, the first sub-through hole is arranged on the upper cover, the second sub-through hole is arranged on the detection module, and the third sub-through hole is arranged on the base.

[0015] In addition, the utility model also provides a radio frequency power supply which comprises the shielding cover structure.

[0016] The shielding cover structure for the detection module can effectively isolate the radio frequency output connector from the detection module, reduce the direct coupling path of electromagnetic radiation, ensure that the detection module can normally work in an interference-free environment, and improve the measurement accuracy and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0018] Figure 1 It is a structural schematic view of the shielding cover in the embodiments of the present application.

[0019] Figure 2 It is a structural exploded view of the shielding cover in the embodiments of the present application.

[0020] Figure 3 It is one of the sectional views of the shielding cover in the embodiments of the present application.

[0021] Figure 4 It is the second sectional view of the shielding cover in the embodiments of the present application.

[0022] In the drawings, 1, cover body; 11, base; 111, second mounting hole; 12, upper cover; 121, first mounting hole; 13, first through hole; 131, first sub-through hole; 132, second sub-through hole; 133, third sub-through hole; 14, second through hole; 15, wire group; 151, wire protection block; 1511, third through hole; 152, wire protection tube; 153, transmission line; 154, SMA connector; 2, insulating sheath; 21, cylindrical portion; 211, annular boss; 212, fourth mounting hole; 22, mounting portion; 221, third mounting hole; 3, detection module; 4, radio frequency output connector. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be further described in detail below with the drawings and examples. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0024] In order to better understand the present application, the present application will be further described below in combination with the drawings and embodiments:

[0025] Referring to Figure 1 As shown in the drawings, the shielding cover structure for the detection module provided by the embodiments of the present application comprises a cover body 1 and an insulating sheath 2, the cover body 1 is provided with a first accommodating cavity, and the first accommodating cavity is used for mounting a detection module 3; the insulating sheath 2 is mounted on the cover body 1, the insulating sheath 2 is provided with a second accommodating cavity, and the second accommodating cavity is used for mounting a radio frequency output connector 4.

[0026] Specifically, by installing the detection module 3 in the first accommodating cavity of the cover body 1 and installing the radio frequency output connector 4 in the second accommodating cavity of the insulating sheath 2, the radio frequency output connector 4 is effectively isolated from the detection module 3, the direct coupling path of electromagnetic radiation is reduced, and the detection module 3 can work normally in an interference-free environment, thereby improving the accuracy and reliability of the measurement. Secondly, the design of the insulating sheath 2 not only provides physical isolation but also has good insulation performance. Even under the action of high voltage, the insulating sheath 2 can withstand high voltage without breakdown, thereby ensuring that the high-voltage signal does not leak into the detection module 3, so that the detection module 3 can safely operate in a high-voltage environment.

[0027] In the embodiment, the cover body 1 is made of aluminum alloy material, which has the characteristics of strong anti-interference ability. Specifically, the cover body 1 is made of aluminum alloy material, which can effectively reflect and absorb electromagnetic waves to form an electromagnetic shielding layer. When electromagnetic waves encounter the surface of the cover body 1, most of the energy will be reflected back to the source, and the remaining energy will be rapidly attenuated through the eddy current effect inside the cover body 1, thereby preventing electromagnetic waves from entering the inside of the cover body 1, which can significantly reduce the influence of external electromagnetic radiation on the detection module 3, ensuring that the detection module 3 can work normally in an interference-free environment, thereby improving the accuracy and reliability of the measurement.

[0028] Referring to Figure 2 As shown in the figure, the cover body 1 includes a base 11 and an upper cover 12, and the base 11 and the upper cover 12 are detachably connected. In this way, when the components inside the cover body 1 are damaged, the detection module 3 and other components inside the cover body 1 can be checked, repaired or replaced by opening the upper cover 12, thereby reducing the replacement cost. Specifically, the upper cover 12 covers the open mouth of the base 11 and is fixedly connected with the base 11. In the embodiment, the fixed connection includes but is not limited to screw connection, buckle connection, magnetic connection and lock connection.

[0029] In an embodiment, the base 11 and the upper cover 12 are connected by screw connection. Specifically, the upper cover 12 is provided with a plurality of first mounting holes 121 penetrating the thickness of the upper cover 12, and the base 11 is provided with a plurality of second mounting holes 111 corresponding to the plurality of first mounting holes 121. The number and position of the plurality of first mounting holes 121 are designed according to the plurality of second mounting holes 111 on the base 11 to ensure one-to-one correspondence. The diameter of the first mounting hole 121 is slightly larger than the diameter of the screw so that the screw can pass through smoothly. The second mounting hole 111 is a threaded hole for cooperation with the screw. The depth H of the second mounting hole 111 satisfies the relationship H = 1.5D ~ 2D, where D is the nominal diameter of the screw. In this way, the screwing depth of the screw can meet the requirements to provide sufficient clamping force.

[0030] When the upper cover 12 and the base 11 are assembled into an integral piece, one end of the screw passes through the first mounting hole 121 of the upper cover 12, the detection module 3 in sequence, and finally is inserted into the second mounting hole 111 of the base 11. With this design, not only the upper cover 12 and the base 11 are fixed together, but also the detection module 3 is firmly pressed on the base 11 through the pressure of the screw, ensuring its stability.

[0031] Referring to Figure 2 As shown, the cover body 1 is provided with a first through hole 13, the first through hole 13 is arranged along the thickness direction of the cover body 1, and the insulating sheath 2 is located at least partially in the first through hole 13. Specifically, the first through hole 13 includes a first sub-through hole 131, a second sub-through hole 132 and a third sub-through hole 133, the first sub-through hole 131 is located on the upper cover 12, the second sub-through hole 132 is located on the detection module 3, and the third sub-through hole 133 is located on the base 11.

[0032] Referring to Figure 2 and Figure 4 As shown, the cover body 1 is provided with a second through hole 14 and a wire group 15 on one side, the second through hole 14 is connected with the first accommodating cavity, and the second through hole 14 is arranged along the length direction of the cover body 1, the wire group 15 is connected with the detection module 3 through the second through hole 14.

[0033] Specifically, the wire group 15 includes a wire protection block 151 and a wire protection tube 152, the wire protection block 151 is provided with a third through hole 1511, the third through hole 1511 is connected with the second through hole 14, the wire protection tube 152 is connected with the third through hole 1511 in cooperation, and the wire protection tube 152 is provided with at least two transmission lines 153, and each end of each transmission line 153 is provided with an SMA connector 154.

[0034] In this embodiment, the insulating sheath 2 includes a cylindrical portion 21 and a mounting portion 22 protruding outward along the radial direction of the cylindrical portion 21, the second accommodating cavity is arranged in the cylindrical portion 21, and the second accommodating cavity extends along the axial direction of the cylindrical portion 21 to penetrate the front and back end faces of the cylindrical portion 21, the mounting portion 22 is provided with a third mounting hole 221 penetrating the thickness of the mounting portion 22, and the third mounting hole 221 is used for cooperating with a fastener (such as a screw) to fix the insulating sheath 2 on the cover body 1. By using a fastener such as a screw, the insulating sheath 2 can be quickly installed and disassembled.

[0035] Among them, the second accommodating cavity is provided with an annular boss 211, and the annular boss 211 is used for abutting with the end of the radio frequency output connector 4. With this design, a clear stop point is provided for the radio frequency output connector 4, when the radio frequency output connector 4 is inserted into the second accommodating cavity and reaches a predetermined depth, the end thereof abuts with the annular boss 211, ensuring that the insertion depth of the radio frequency output connector 4 meets the requirements, and ensuring that the radio frequency output connector 4 is installed in place.

[0036] Referring to Figure 3 As shown, the side wall of the cylindrical portion 21 is provided with a fourth mounting hole 212, which penetrates the wall thickness of the cylindrical portion 21 and communicates with the second accommodating cavity. One end of the fastener passes through the fourth mounting hole 212 and is inserted into the matching hole in the side wall of the radio frequency output connector 4, so as to fix the radio frequency output connector 4.

[0037] Specifically, through the cooperation of the fastener, the fourth mounting hole 212 and the matching hole, the radio frequency output connector 4 is firmly fixed inside the insulating sheath 2, preventing it from loosening or falling off due to vibration or impact during operation.

[0038] In another embodiment, a plurality of fourth mounting holes 212 are provided on the side wall of the cylindrical portion 21 and cooperate with a plurality of matching holes on the side wall of the radio frequency output connector 4, thereby achieving multi-point fixation. This multi-point fixation further enhances the firmness of the installation of the radio frequency output connector 4, ensuring that it can maintain good connection with the insulating sheath 2 under various working conditions.

[0039] In this embodiment, the radio frequency output connector 4 is a BLN20 output connector, the insulating sheath 2 is a PTFE insulating sheath, the detection module 3 is a sensor-PCB detection module, the wire protection block 151 is a red copper wire protection block, and the wire protection tube 152 is a red copper wire protection tube.

[0040] For further explanation, the embodiment also provides an assembly method of a shielding cover structure suitable for a detection module, which is as follows:

[0041] Step one, assemble the BLN20 output connector into the PTFE insulating sheath, align the screw with the fourth mounting hole 212, then insert it into the fourth mounting hole 212, and pass the screw through the fourth mounting hole 212 to insert into the matching hole of the BLN20 output connector, thereby realizing the fixed connection of the BLN20 output connector and the PTFE insulating sheath, so that the BLN20 output connector and the PTFE insulating sheath are assembled into an integral piece;

[0042] Step two, place the detection module 3 into the base 11, then assemble the upper cover 12 onto the base 11 and tighten the screw to assemble a cover structure with the detection module 3 inside, wherein the detection module 3 leads out two RG316 coaxial lines with SMA connectors 154 through the red copper wire protection block, and the RG316 coaxial line of the SMA connector 154 is sleeved with a red copper wire protection tube to shield the surrounding electromagnetic interference. The data detected by the detection module 3 is transmitted to the control mainboard through the two RG316 coaxial lines and the SMA connector 154, and is transmitted to the display end through the RS232 port of the control mainboard.

[0043] Step three, the cover structure in step two is installed on the whole piece in step one, and the screw is tightened, and then the shielding cover structure is assembled.

[0044] It should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the application is used, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship commonly used when the product of the application is used, which is only for the convenience of describing the application and simplifying the description, and is not intended to indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the application.

[0045] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes shall fall within the scope of the appended claims of the present application.

[0046] The above has exemplarily described the utility model patent in combination with the drawings, and obviously the implementation of the utility model patent is not limited by the above-mentioned manner, as long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent is directly applied to other occasions without improvement, all of which are within the protection scope of the utility model patent.

Claims

1. A shielding cover structure suitable for a detection module, characterized in that, include: Cover (1), the cover (1) is provided with a first accommodating cavity, the first accommodating cavity is used to install the detection module (3); An insulating sleeve (2) is installed on the cover (1). The insulating sleeve (2) has a second accommodating cavity inside, which is used to install the radio frequency output connector (4).

2. The shielding structure suitable for a detection module as described in claim 1, characterized in that: The cover (1) includes a base (11) and a top cover (12). The top cover (12) covers the opening of the base (11) and is fixedly connected to the base (11). The top cover (12) is provided with a plurality of first mounting holes (121) that penetrate the thickness of the top cover (12). The base (11) is provided with second mounting holes (111) that correspond one-to-one with the plurality of first mounting holes (121). One end of the fastener passes through the first mounting hole (121) and the detection module (3) in sequence and is inserted into the second mounting hole (111) that corresponds to the first mounting hole (121).

3. The shielding structure suitable for a detection module as described in claim 2, characterized in that: The cover (1) is provided with a first through hole (13), which is arranged along the thickness direction of the cover (1), and at least a portion of the insulating sleeve (2) is located inside the first through hole (13).

4. The shielding structure suitable for a detection module as described in claim 2, characterized in that: The cover (1) is provided with a second through hole (14) and a wire group (15) on one side. The second through hole (14) is connected to the first accommodating cavity and is arranged along the length direction of the cover (1). The wire group (15) is connected to the detection module (3) through the second through hole (14).

5. A shielding structure suitable for a detection module as described in claim 4, characterized in that: The cable assembly (15) includes a cable guard block (151) and a cable guard tube (152). The cable guard block (151) has a third through hole (1511) which is connected to the second through hole (14). The cable guard tube (152) is connected to the third through hole (1511). The cable guard tube (152) has at least two transmission lines (153) inside. Each transmission line (153) has an SMA connector (154) at its end.

6. The shielding structure suitable for a detection module as described in claim 1, characterized in that: The insulating sleeve (2) includes a cylindrical portion (21) and a mounting portion (22) formed by the cylindrical portion (21) extending radially outward. The second accommodating cavity is disposed inside the cylindrical portion (21) and extends along the axial direction of the cylindrical portion (21) to penetrate the front and rear end faces of the cylindrical portion (21). The mounting portion (22) is provided with a third mounting hole (221) penetrating the thickness of the mounting portion (22) and the third mounting hole (221) is used for connection with a fastener.

7. A shielding structure suitable for a detection module as described in claim 6, characterized in that: The second accommodating cavity is provided with an annular boss (211), which is used to abut against the end of the radio frequency output connector (4).

8. A shielding structure suitable for a detection module as described in claim 7, characterized in that: The cylindrical part (21) has a fourth mounting hole (212) on its side wall. The fourth mounting hole (212) penetrates the wall thickness of the cylindrical part (21) and communicates with the second accommodating cavity.

9. A shielding structure suitable for a detection module as described in claim 3, characterized in that: The first through hole (13) includes a first sub-through hole (131), a second sub-through hole (132) and a third sub-through hole (133). The first sub-through hole (131) is located on the upper cover (12), the second sub-through hole (132) is located on the detection module (3), and the third sub-through hole (133) is located on the base (11).

10. A radio frequency power supply, characterized in that, Includes the shielding structure described in any one of claims 1 to 9.

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