Waveguide mounting structure

Abstract

The utility model relates to the technical field of wireless communication, and discloses a waveguide mounting structure, which comprises a waveguide, a shell assembly, a microstrip plate, an inner cover plate and a radio frequency connector, a waveguide needle is arranged on the waveguide; the shell assembly comprises a first shell and a second shell which can be mutually locked and fixed, a waveguide cavity is formed between the first shell and the second shell, and the waveguide is installed in the waveguide cavity; a micro-strip cavity is formed in the second shell and is communicated with the waveguide cavity; the microstrip plate is installed in the microstrip cavity, and the waveguide needle is connected with one end of the microstrip plate; the inner cover plate covers the micro-strip cavity, and the inner cover plate is detachably connected with the second shell; and the radio frequency connector is arranged on the second shell and is connected with the other end of the microstrip board. According to the utility model, the waveguide is fixed through the first shell and the second shell, the connection is tight, the disassembly and assembly are convenient, the operation is fast, the installation efficiency is improved, and the product volume is reduced; the arrangement of the inner cover plate facilitates the debugging and testing of the product, and avoids the frequent disassembly and assembly of the housing during the testing.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless communication, in particular to a waveguide installation structure. Background Art

[0002] In the signal transmission of radio frequency microwave field, in addition to the transmission of wireless signals, most of them require transmission lines for signal conduction, among which coaxial lines and waveguides are widely used to transmit microwave radio frequency energy.

[0003] Waveguide transmission lines have the advantages of small conductor loss and dielectric loss, large power capacity, no radiation loss, simple structure, and easy manufacturing. Commonly used waveguides are rectangular, circular, single-ridge, double-ridge, and elliptical. The most widely used waveguide is the rectangular waveguide.

[0004] In communication devices, the use of waveguides is very common. When working, the waveguide and the shell must remain stable to reduce fluctuations in signal transmission, which requires the connection between the shell and the waveguide to have strong tightness. In order to achieve a tight connection between the waveguide and the shell, a large number of bolts are usually fixed directly on the waveguide in the prior art, which makes the disassembly and assembly between the waveguide and the shell more troublesome; moreover, when the existing waveguide products are debugged and tested before leaving the factory, in order to ensure the reliability of the test, the waveguide and the shell need to be assembled and fixed before the test is carried out. Once a problem occurs during the test, the waveguide and the shell need to be disassembled, which is very cumbersome, time-consuming and labor-intensive. In addition, the existing installation method causes the overall volume of the waveguide and the shell to be large, which occupies more space and cannot meet the installation requirements of miniaturized products.

[0005] Therefore, there is an urgent need for a waveguide installation structure to solve the above technical problems. Utility Model Content

[0006] Based on the above, the purpose of the utility model is to provide a waveguide installation structure with tight and reliable connection, convenient assembly and disassembly, convenient testing, improved installation efficiency and reduced product volume.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A waveguide mounting structure, comprising:

[0009] A waveguide, wherein a waveguide needle is arranged on the waveguide;

[0010] The housing assembly comprises a first housing and a second housing that can be locked and fixed to each other, a waveguide cavity is formed between the first housing and the second housing, the waveguide is installed in the waveguide cavity; a microstrip cavity is arranged in the second housing, and the microstrip cavity is communicated with the waveguide cavity;

[0011] A microstrip plate is installed in the microstrip cavity, and the waveguide needle is connected to one end of the microstrip plate;

[0012] An inner cover plate, which is arranged outside the microstrip cavity and is detachably connected to the second housing;

[0013] A radio frequency connector is disposed on the second housing and is connected to the other end of the microstrip board.

[0014] In some possible implementations, a first groove is provided in the first shell, a second groove is provided in the second shell, the first groove and the second groove are butted together to form the waveguide cavity, and the waveguide cavity is conformally provided with the waveguide.

[0015] In some possible implementations, a waveguide flange is provided at one end of the waveguide, the waveguide flange is attached to the outer walls of the first shell and the second shell, and the waveguide flange is detachably connected to the first shell and the second shell, respectively.

[0016] In some possible implementations, a first avoidance groove is provided on the first shell for disassembly and assembly between the first shell and the waveguide flange; and a second avoidance groove is provided on the second shell for disassembly and assembly between the second shell and the waveguide flange.

[0017] In some possible implementations, the waveguide needle is integrally disposed in the waveguide, and the waveguide needle is protruded from a side surface of the waveguide.

[0018] In some possible implementations, a circuit board installation cavity is further provided on a side of the second shell away from the first shell for installing a circuit board; and the circuit board installation cavity is communicated with the microstrip cavity.

[0019] In some possible implementations, a circuit cover is further disposed outside the circuit board installation cavity, and the circuit cover is detachably connected to the second shell.

[0020] In some possible implementations, the microstrip plate is fixed in the microstrip cavity by bonding.

[0021] In some possible implementations, the waveguide needle is welded to the microstrip board by soldering; and the radio frequency connector is welded to the microstrip board by soldering.

[0022] In some possible implementations, the first shell and the second shell are locked and connected via fasteners; and the inner cover plate and the second shell are fixedly connected via fasteners.

[0023] The beneficial effects of the utility model are:

[0024] The waveguide installation structure provided by the utility model installs the waveguide between the first shell and the second shell, and fixes the waveguide through the clamping effect of the first shell and the second shell. The connection is tight and firm, and the disassembly and assembly are convenient and the operation is quick. Compared with the method of directly connecting a large number of screws on the waveguide, the installation efficiency is improved. Moreover, since the waveguide is installed in the waveguide cavity, the overall volume of the product is also reduced, meeting the installation requirements of miniaturized products. At the same time, the utility model sets a microstrip cavity in the second shell, and the microstrip board is installed in the microstrip cavity. During assembly, the waveguide is installed in the second shell, so that the waveguide needle is connected to one end of the microstrip board, and the radio frequency connector is connected to the other end of the microstrip board, thereby realizing the signal transmission of the waveguide; then the device in the microstrip cavity is covered and packaged by the inner cover plate. Since the inner cover plate can effectively prevent the leakage of internal signals, the product can be debugged and tested after the inner cover plate is fixed, and there is no need to wait until the first shell is installed and fixed before testing. The operation is convenient and easy, and the tedious steps of frequent disassembly and assembly of the shell are avoided; if the product is qualified after the test, the first shell is fixed again to complete the packaging of the entire product; if the test finds that there is a problem with the product, and the device inside the microstrip cavity needs to be repaired, it only needs to remove the inner cover plate to operate, which is simple and convenient to operate, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of a waveguide installation structure provided by an embodiment of the utility model;

[0026] Figure 2 is an exploded view of a waveguide installation structure provided by an embodiment of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the first housing provided by an embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the waveguide installation structure provided by the embodiment of the utility model after the first shell is removed;

[0029] Figure 5 It is an exploded view of the second housing, the inner cover plate and the microstrip provided by the embodiment of the utility model;

[0030] Figure 6 It is an exploded view of the second housing and the circuit cover provided by the embodiment of the utility model;

[0031] Figure 7 It is a schematic diagram of the structure of the waveguide provided in the embodiment of the utility model.

[0032] In the figure:

[0033] 1. Waveguide; 11. Waveguide needle; 12. Waveguide flange;

[0034] 21. first housing; 211. first groove; 212. first avoidance groove; 22. second housing; 220. microstrip cavity; 221. second groove; 222. second avoidance groove; 223. circuit board mounting cavity;

[0035] 3. Microstrip board; 4. Inner cover; 5. RF connector; 6. Circuit cover. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] like Figure 1-Figure 7As shown, this embodiment provides a waveguide installation structure, including a waveguide 1, a shell assembly, a microstrip board 3, an inner cover plate 4 and a radio frequency connector 5. In this embodiment, the waveguide 1 is illustrated by taking a rectangular waveguide tube as an example. The waveguide 1 is a rectangular tubular structure, and a waveguide needle 11 is provided on the lower side of one end thereof for transmitting signals. Optionally, the waveguide needle 11 and the waveguide 1 are an integrated structure, made of metal material, formed by integral processing, and the waveguide needle 11 is protruded from the side of the waveguide 1. The structure of the waveguide module is simple, the processing is convenient, and it is conducive to reducing the volume. The shell assembly includes a first shell 21 and a second shell 22, and a waveguide cavity is formed between the first shell 21 and the second shell 22. The waveguide 1 is installed in the waveguide cavity, and the waveguide 1 can be fixed by the mutual locking of the first shell 21 and the second shell 22. Specifically, a first groove 211 matching the shape of part of the waveguide 1 is provided in the first shell 21, and a second groove 221 matching the shape of part of the waveguide 1 is provided in the second shell 22. The first groove 211 and the second groove 221 are connected to form a complete waveguide cavity, and the shape of the waveguide cavity is set in accordance with the shape of the waveguide 1 to ensure the fit between the waveguide 1 and the waveguide cavity, and improve the installation tightness and stability of the waveguide 1. Optionally, in this embodiment, the first shell 21 and the second shell 22 are fixed by screws, which has a simple structure and reliable connection.

[0041] A microstrip cavity 220 is also provided in the second shell 22 of the present embodiment, and the microstrip board 3 is installed in the microstrip cavity 220. Specifically, the microstrip board 3 can be fixed in the microstrip cavity 220 by bonding. Further, the microstrip cavity 220 is connected to the second groove 221, so that the waveguide needle 11 can pass through the second groove 221 and connect with one end of the microstrip board 3. Specifically, the waveguide needle 11 and the microstrip board 3 can be welded by solder wire, and the electrical conduction between the two can be ensured while the two are fixed. The RF connector 5 of the present embodiment is installed on one side of the second shell 22, and the RF connector 5 is connected to the other end of the microstrip board 3, so that the signal transmission between the waveguide 1 and the RF connector 5 is realized. Specifically, the RF connector 5 of the present embodiment is fixed to the second shell 22 by screws, and the pin of the RF connector 5 is welded to the microstrip board 3 by soldering. During the performance test or use of the waveguide installation structure, the signal is input from one end of the waveguide 1, transmitted through the microstrip board 3, and output from one end of the RF connector 5. The inner cover plate 4 of this embodiment covers the outside of the microstrip cavity 220, and the inner cover plate 4 is detachably connected to the second shell 22. With such a configuration, when the first shell 21 is not installed, the product can be debugged and tested (such as testing whether the gain is normal, cutting and patching the microstrip to adjust the standing wave, etc.), and the inner cover plate 4 can effectively prevent the leakage of the test signal; and when the device inside the microstrip cavity 220 needs to be repaired, it is only necessary to remove the inner cover plate 4. Exemplarily, the inner cover plate 4 of this embodiment is fixedly connected to the second shell 22 by screws.

[0042] The waveguide installation structure provided in this embodiment installs the waveguide 1 between the first shell 21 and the second shell 22. The waveguide 1 is fixed by the clamping effect of the first shell 21 and the second shell 22. The connection is tight, the assembly and disassembly is convenient, and the operation is quick. Compared with the method of directly connecting a large number of screws to the waveguide 1, the installation efficiency is improved. Moreover, since the waveguide 1 is installed in the waveguide cavity, the overall volume of the product is also reduced, meeting the installation requirements of miniaturized products. At the same time, in this embodiment, a microstrip cavity 220 is set in the second shell 22, and the microstrip board 3 is installed in the microstrip cavity 220. During assembly, the waveguide 1 is installed in the second shell 22, so that the waveguide needle 11 is connected to one end of the microstrip board 3, and the RF connector 5 is connected to the other end of the microstrip board 3, thereby realizing the signal transmission of the waveguide 1; then the components in the microstrip cavity 220 are covered and packaged by the inner cover plate 4. Since the inner cover plate 4 can effectively prevent the leakage of internal signals, the product can be debugged and tested after the inner cover plate 4 is fixed, without waiting for the first shell 21 to be installed and fixed before testing. The operation is convenient and easy, and the tedious steps of frequent disassembly and assembly of the shell are avoided; if the product is qualified after the test, the first shell 21 is fixed again to complete the packaging of the entire product; if the test finds that there is a problem with the product and the components inside the microstrip cavity 220 need to be repaired, it is only necessary to remove the inner cover plate 4 for operation. The operation is simple and convenient, saving time and effort.

[0043] Further, a waveguide flange 12 is also provided at one end of the waveguide 1, and the waveguide flange 12 and the waveguide 1 are also an integrated structure. The waveguide flange 12 is attached to the outer wall of the first shell 21 and the second shell 22, and the waveguide flange 12 is detachably connected to the first shell 21 and the second shell 22 respectively. Such a configuration further improves the connection firmness between the waveguide 1 and the shell assembly, and can still ensure that the waveguide 1 is reliably connected to the second shell 22 after the first shell 21 is removed, thereby improving the stability of the waveguide 1 during the debugging and testing process. Specifically, the waveguide flange 12 and the first shell 21 of this embodiment and the waveguide flange 12 and the second shell 22 are fixedly connected by screws, with a simple structure and a firm connection. In this embodiment, a first avoidance groove 212 is also provided on the first shell 21 to facilitate the operation of the staff, and the screws can be screwed by tools such as screwdrivers to achieve the disassembly and assembly between the first shell 21 and the waveguide flange 12. Similarly, a second avoidance groove 222 is also provided on the second shell 22 to facilitate operation by the staff, and the second shell 22 and the waveguide flange 12 can be disassembled and assembled by tightening the screws with tools such as a screwdriver.

[0044] In this embodiment, a circuit board installation cavity 223 is further provided on one side of the second housing 22 away from the first housing 21 for installing a circuit board; the circuit board installation cavity 223 is connected to the microstrip cavity 220 through an opening so as to realize the connection between the circuit board and the microstrip board 3. Furthermore, a circuit cover plate 6 is further provided outside the circuit board installation cavity 223, and the circuit cover plate 6 is detachably connected to the second housing 22, so as to achieve the protection of the circuit board and the electromagnetic shielding function to prevent the internal devices from being subjected to external electromagnetic interference.

[0045] The steps for assembling the waveguide installation structure provided in this embodiment are as follows:

[0046] First, the waveguide 1 is installed in the second groove 221 of the second housing 22;

[0047] Then, the waveguide needle 11 of the waveguide 1 is soldered to one end of the microstrip board 3 in the second housing 22 by solder wire, and the RF connector 5 is soldered to the other end of the microstrip board 3 by solder;

[0048] Afterwards, the inner cover plate 4 is fixed to the second housing 22 by screws to achieve the covering and packaging of the components in the microstrip cavity 220; at this time, the product can be debugged and tested, and the setting of the inner cover plate 4 can effectively prevent the leakage of signals during the test process;

[0049] Finally, the first shell 21 is fixed to the second shell 22 by screws, and the waveguide 1 is tightly and reliably fixed by the squeezing and clamping action of the first shell 21 and the second shell 22 .

[0050] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A waveguide mounting structure, characterized in that: include: A waveguide (1), wherein a waveguide needle (11) is provided on the waveguide (1); A housing assembly, comprising a first housing (21) and a second housing (22) which can be locked and fixed to each other, a waveguide cavity being formed between the first housing (21) and the second housing (22), the waveguide (1) being installed in the waveguide cavity; a microstrip cavity (220) being arranged in the second housing (22), the microstrip cavity (220) being communicated with the waveguide cavity; A microstrip plate (3) is installed in the microstrip cavity (220), and the waveguide needle (11) is connected to one end of the microstrip plate (3); An inner cover plate (4) is arranged to cover the outside of the microstrip cavity (220), and the inner cover plate (4) is detachably connected to the second shell (22); A radio frequency connector (5) is arranged on the second housing (22), and the radio frequency connector (5) is connected to the other end of the microstrip board (3).

2. The waveguide installation structure according to claim 1, characterized in that: A first groove (211) is provided in the first shell (21), and a second groove (221) is provided in the second shell (22); the first groove (211) and the second groove (221) are butted together to form the waveguide cavity; the waveguide cavity is arranged in a conformal manner to the waveguide (1).

3. The waveguide installation structure according to claim 1, characterized in that: A waveguide flange (12) is provided at one end of the waveguide (1), the waveguide flange (12) is fitted to the outer walls of the first shell (21) and the second shell (22), and the waveguide flange (12) is detachably connected to the first shell (21) and the second shell (22).

4. The waveguide installation structure according to claim 3, characterized in that: The first shell (21) is provided with a first avoidance groove (212) for disassembly and assembly between the first shell (21) and the waveguide flange (12); and the second shell (22) is provided with a second avoidance groove (222) for disassembly and assembly between the second shell (22) and the waveguide flange (12).

5. The waveguide installation structure according to claim 1, characterized in that: The waveguide needle (11) is integrally arranged on the waveguide (1), and the waveguide needle (11) is protruded from the side surface of the waveguide (1).

6. The waveguide installation structure according to claim 1, characterized in that: A circuit board installation cavity (223) is also provided on a side of the second shell (22) away from the first shell (21) for installing a circuit board; the circuit board installation cavity (223) is communicated with the microstrip cavity (220).

7. The waveguide installation structure according to claim 6, characterized in that: A circuit cover plate (6) is also provided outside the circuit board installation cavity (223), and the circuit cover plate (6) is detachably connected to the second shell body (22).

8. The waveguide installation structure according to any one of claims 1 to 7, characterized in that: The microstrip plate (3) is fixed in the microstrip cavity (220) by bonding.

9. The waveguide installation structure according to any one of claims 1 to 7, characterized in that: The waveguide needle (11) and the microstrip board (3) are welded by soldering; and the radio frequency connector (5) and the microstrip board (3) are welded by soldering.

10. The waveguide installation structure according to any one of claims 1 to 7, characterized in that: The first shell (21) and the second shell (22) are locked and connected via fasteners; and the inner cover plate (4) and the second shell (22) are fixedly connected via fasteners.

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