Circuit board fixing device for marine electronic equipment

Abstract

The utility model discloses a circuit board fixing device for marine electronic equipment, which comprises a shell and a circuit board, the shell comprises a bottom plate and at least two symmetrically arranged side walls, the circuit board is connected between the two side walls, the inner side of each side wall is provided with a vertical circuit board groove, and the circuit board is arranged in the circuit board groove. The two ends, connected with the two side walls, of the circuit board are provided with guide rails, and the guide rails are installed in the circuit board groove and can slide up and down in the circuit board groove. A circuit board cover plate is arranged above the circuit board, and the two ends of the circuit board cover plate are connected with the side walls so as to limit the circuit board. According to the circuit board fixing device of the marine electronic equipment, through the design that the guide rail slides in the circuit board groove, the circuit board cover plate is prevented from loosening, the rectangular electric connector is prevented from being inserted mistakenly, the partition plates are prevented from being collided and the like, the risk of electronic component damage caused by vibration and displacement can be effectively reduced, and the convenience of circuit board maintenance and replacement is improved.

Description

Technical Field

[0001] The utility model relates to a circuit board fixing device, in particular to a circuit board fixing device for marine electronic equipment. Background Art

[0002] In the vast ocean, ships, as an important carrier of human exploration and transportation, always sail through the waves tenaciously. However, when these steel giants shuttle through the turbulent waves, the hull will inevitably be hit by the waves, causing shaking. This continuous vibration is not only a severe test for the stability of the hull structure, but also a great challenge to the electronic equipment on board. Especially under the high salinity and high humidity conditions of the marine environment, the electronic components inside the electronic equipment are very susceptible to corrosion and damage.

[0003] To ensure the stable operation of these key equipment during navigation, technicians need to regularly perform meticulous maintenance and replacement of these electronic devices. However, if the installation method of the circuit board is too cumbersome and complicated, it will not only increase the difficulty of the maintenance process, but also increase the risk of technical personnel's operating errors, and even cause secondary damage to the equipment. This will not only significantly extend the maintenance time, but may also pose a potential threat to the safe operation of the ship. Therefore, during the design stage of the circuit board, it is particularly important to optimize its installation method to make it more convenient for maintenance and replacement. This is not only related to the efficiency of equipment maintenance, but also directly related to the safety and stability of the entire ship. Utility Model Content

[0004] In view of the above-mentioned deficiencies of current circuit board fixing devices, the utility model provides a circuit board fixing device for marine electronic equipment, which can effectively reduce the risk of damage to electronic components caused by vibration and displacement, while improving the convenience of circuit board maintenance and replacement.

[0005] In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

[0006] A circuit board fixing device for marine electronic equipment comprises a shell and a circuit board, wherein the shell comprises a bottom plate and at least two symmetrically arranged side walls, the circuit board is connected between the two side walls, the inner sides of the side walls are provided with vertical circuit board grooves, the two ends of the circuit board connected to the two side walls are provided with guide rails, the guide rails are installed in the circuit board grooves and can slide up and down in the circuit board grooves; a circuit board cover is provided above the circuit board, and the two ends of the circuit board cover are connected to the side walls to limit the circuit board.

[0007] According to one aspect of the utility model, the fixing device also includes a rectangular electrical connector, which includes a rectangular connector plug and a rectangular connector socket that are mutually matched and connected, the rectangular connector plug is fixedly set on the circuit board, and the rectangular connector socket is fixedly set on the base plate and / or the circuit board cover.

[0008] According to one aspect of the utility model, the rectangular electrical connector is an anti-misinsertion rectangular electrical connector.

[0009] According to one aspect of the utility model, the guide rail includes a base plate and a blade connected vertically, and its cross section is L-shaped or T-shaped, the blade is connected to the circuit board, and the base plate is connected to the guide rail groove.

[0010] According to one aspect of the utility model, the shell further comprises two connecting plates connecting the edges of the two side walls, and the bottom plate, the connecting plates, the side walls and the circuit board cover plate are connected to each other in cooperation to form a hollow box body.

[0011] According to one aspect of the utility model, the housing and / or the circuit board cover is provided with a cable opening for accommodating the passage of cables.

[0012] According to one aspect of the utility model, a fixing frame is arranged on the housing.

[0013] According to one aspect of the utility model, a fixing hole is further provided on the side wall, and the fixing hole facilitates the installation of the fixing device into the marine electronic equipment.

[0014] According to one aspect of the utility model, it also includes a partition plate, which is arranged between two adjacent circuit boards. A vertical partition plate groove is also arranged on the inner side of the side wall, and the partition plate is installed in the partition plate groove.

[0015] According to one aspect of the utility model, the partition is a metal partition, and the partition is used to reduce electromagnetic interference between circuit boards.

[0016] The advantages of the implementation of the utility model are as follows: through the bottom plate and the symmetrically arranged side walls and the circuit board grooves arranged on the side walls, the two ends of the circuit board are connected with guide rails, the guide rails are installed in the circuit board grooves, and can slide in the circuit board grooves. By sliding the guide rails in the grooves on the side walls, the circuit board can be quickly taken out of the grooves, which is convenient for the maintenance and replacement of the circuit board; through the arrangement of the circuit board cover, the circuit board can be prevented from loosening forward and backward, causing the circuit board to slip out of the fixing device. Through the limitation of the circuit board groove, the bottom plate and the circuit board cover, it is ensured that the circuit board will not shake in the housing, reducing the risk of cable falling off and / or damage to electronic components caused by vibration and displacement. By arranging a fixing frame on the housing, the fixing device can be stably installed in the inner cavity of the electronic device, reducing the damage to the electronic components caused by the shaking of the electronic device. By installing a rectangular electrical connector with an anti-misinsertion structure on the bottom plate and / or the circuit board cover 3, the circuit board can be effectively prevented from being misinserted during the installation process, thereby avoiding short circuit of the circuit board and damage to the electronic components. Through the arrangement of the partition, the electromagnetic interference between the circuit boards can be effectively reduced, and the working stability of the equipment can be increased. The circuit board fixing device for marine electronic equipment provided by the utility model can effectively reduce the risk of damage to electronic components caused by vibration and displacement, and improve the convenience of circuit board maintenance and replacement, through the designs of guide rails sliding in circuit board grooves, circuit board cover plate anti-loosening, rectangular electrical connector anti-misplugging and partition plate anti-interference. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 This is a three-dimensional diagram of a circuit board fixing device for a marine electronic device according to the utility model;

[0019] Figure 2 It is a schematic diagram of the structure explosion of a circuit board fixing device for a marine electronic device according to the utility model;

[0020] Numbers in the figure:

[0021] 1. Shell; 11. Bottom plate; 12. Side wall; 13. Cable port; 14. Connecting plate; 121. Circuit board slot; 122. Fixing frame; 123. Partition slot; 2. Circuit board; 3. Circuit board cover; 4. Guide rail; 41. Base plate; 42. Leaf plate; 5. Partition; 6. Fastener; 7. Rectangular electrical connector; 71. Rectangular connector socket; 72. Rectangular connector plug. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] like Figure 1 and Figure 2 As shown, a circuit board fixing device for marine electronic equipment includes a shell 1, a circuit board 2 and a circuit board cover 3. The shell 1 includes a bottom plate 11 and at least two symmetrically arranged side walls 12. The circuit board is connected between the two side walls 12. A vertical circuit board groove 121 is provided on the inner side of the side wall 12. The two ends of the circuit board 2 connected to the two side walls are fixedly connected with guide rails 4. The guide rail 4 is installed in the circuit board groove 121 and can slide up and down in the circuit board groove 121. The circuit board cover 3 is fixedly installed on the top of the side wall 12, or the circuit board cover 3 covers the top of the circuit board 2, that is, the circuit board cover 3 is arranged to cover the top of the circuit board and is connected to the side wall. The circuit board cover is fixedly connected to the side wall by screws. The circuit board cover 3 is used to limit the circuit board 2 so that it is fixedly installed inside the shell, and through the limitation of the circuit board groove 121, the bottom plate 11 and the circuit board cover 3, it is ensured that the circuit board will not be in the shell 1 The circuit board can be moved inside the shell to ensure that it will not shake, reducing the risk of cable falling off and / or electronic component damage caused by vibration and displacement; the groove is set to multiple, and multiple circuit boards can be arranged as needed; preferably, the shell 1 is square, and the side walls 12 are 2 to 4. The bottom plate 11 and the side walls 12 can be integrally formed, or the bottom plate 11 and the side walls 12 and the side walls are connected by screws to form a shell 1. The bottom plate 11 and the side walls 12 are separated, which can more conveniently fix the circuit board fixture of the marine electronic equipment to the inner cavity of the electrical appliance. The side wall is also provided with a fixing hole to facilitate the fixing device to be fixed inside the electronic equipment cavity or other equipment to be fixedly connected to the fixing device.

[0025] The guide rail 4 is fixedly connected to the circuit board 2, and the fixing connection method can be screws, buckles, glue, etc. The guide rail 4 includes a base plate 41 and a blade 42 that are vertically connected to each other, and its cross-sectional shape can be "L", "T", "Y", "mountain" and other shapes. The base plate 41 is connected to the circuit board slot 121, and the blade 42 is connected to the circuit board (2).

[0026] In order to facilitate the cables in the circuit board to pass through the circuit board fixing device of the marine electronic equipment, the housing 1 and / or the circuit board cover 3 are provided with a cable opening 13 for accommodating the cables to pass through, so as to facilitate the cables at different positions on the circuit board to pass through.

[0027] In order to facilitate the fixing and installation of the circuit board fixture of the marine electronic equipment to the inner cavity of the electronic equipment, a fixing bracket 122 is provided on the housing 1, and the fixing bracket 122 can be provided on the bottom plate 11 or on the side wall 12. The fixing bracket 122 can be fixed to the inner cavity of the electronic equipment housing in a threaded connection, a snap connection, etc. By stably installing the circuit board fixture of the marine electronic equipment in the inner cavity of the electronic equipment through the fixing bracket 122, the damage of the electronic components caused by the shaking of the electronic equipment can be reduced.

[0028] The advantages of this embodiment: through the bottom plate and the symmetrically arranged side walls and the circuit board grooves arranged on the side walls, guide rails are connected at both ends of the circuit board, the guide rails are installed in the circuit board grooves, and can slide up and down in the circuit board grooves. By sliding the guide rails up and down in the grooves on the side walls, the circuit board can be quickly taken out of the grooves, which is convenient for the maintenance and replacement of the circuit board; through the arrangement of the circuit board cover, the circuit board can be prevented from loosening up and down, causing the circuit board to slip out of the fixing device. Through the limitation of the circuit board groove, the bottom plate and the circuit board cover, it is ensured that the circuit board will not shake in the housing, reducing the risk of cable detachment and / or damage to electronic components caused by vibration and displacement. By arranging a fixing frame on the housing, the fixing device can be stably installed in the inner cavity of the electronic device, reducing the damage to the electronic components caused by the shaking of the electronic device.

[0029] Embodiment 2:

[0030] like Figure 1 and Figure 2As shown, a circuit board fixing device for marine electronic equipment includes a housing 1, a circuit board 2 and a circuit board cover 3. The housing 1 includes a bottom plate 11 and at least two symmetrically arranged side walls 12. The circuit board is connected between the two side walls 12. A vertical circuit board groove 121 is provided on the inner side of the side wall 12. Guide rails 4 are fixedly connected to both ends of the circuit board 2. The guide rails 4 are installed in the circuit board groove 121 and can slide up and down in the circuit board groove 121. The circuit board cover 3 is fixedly installed on the top of the side wall 12, or the circuit board cover 3 covers the top of the circuit board 2, that is, the circuit board cover 3 is arranged to cover the top of the circuit board and is connected to the side wall. The circuit board cover is fixedly connected to the side wall by screws. The circuit board cover 3 is used to limit the circuit board 2 so that it is fixedly installed inside the housing, and through the limitation of the circuit board groove 121, the bottom plate 11 and the circuit board cover 3, it is ensured that the circuit board will not move in the housing 1, and it can be ensured that the circuit board will not shake in the housing, reducing the vibration and The risk of cable falling off and / or electronic component damage caused by displacement; the grooves are set to multiple, and multiple circuit boards can be arranged as needed; preferably, the housing 1 also includes two connecting plates 14 connected at the edges of the two side walls 12, and the bottom plate 11, connecting plate 14, side wall 12 and circuit board cover 3 cooperate with each other to form a hollow box, the bottom plate 11 and side wall 12 and connecting plate 14 can be integrally formed, or the bottom plate 11 and side wall 12 and connecting plate 14 can be fixedly connected to form a housing 1 by screws, and the separation of the bottom plate 11 and the side wall 12 can make it more convenient to fix the circuit board fixing device of the marine electronic equipment in the inner cavity of the electrical appliance. The side wall is also provided with fixing holes to facilitate the device to be fixed inside the electrical cavity or other equipment to be fixedly connected to the fixing device.

[0031] The guide rail 4 is fixedly connected to the circuit board 2, and the fixing connection method can be screws, buckles, glue, etc. The guide rail 4 includes a base plate 41 and a blade 42 that are vertically connected to each other, and its cross-sectional shape can be "L", "T", "Y", "mountain" and other shapes. The base plate 41 is connected to the circuit board slot 121, and the blade 42 is connected to the circuit board (2).

[0032] In order to facilitate the cables in the circuit board to pass through the circuit board fixing device of the marine electronic equipment, the housing 1 and / or the circuit board cover 3 are provided with cable openings 13 for accommodating the cables to pass through, so as to facilitate the cables at different positions on the circuit board to pass through.

[0033] In order to conveniently fix and install the circuit board fixture of the marine electronic equipment to the inner cavity of the electronic equipment, a fixing frame 122 is provided on the housing 1, and the frame 122 can be provided on the bottom plate 11 or on the side wall 12. The connection method of the fixing frame 122 to the inner cavity of the electronic equipment housing can be threaded connection, snap connection, etc. The circuit board fixture of the marine electronic equipment is stably and conveniently installed in the inner cavity of the electronic equipment by the fixing frame, which can reduce the damage of the electronic components caused by the shaking of the electronic equipment.

[0034] The circuit board fixing device of the marine electronic equipment includes a rectangular electrical connector 7, and the rectangular electrical connector 7 includes a rectangular connector socket 71 and a rectangular connector plug 72. The rectangular connector socket 71 is installed on the bottom plate 11 and / or the circuit board cover plate 3, and the rectangular connector plug 72 is installed on the circuit board 2. The rectangular connector plug 72 is matched and connected with the rectangular connector socket 71. The rectangular electrical connector 7 is an anti-misinsertion rectangular electrical connector. The anti-misinsertion rectangular electrical connector 7 can prevent the circuit board from being misinserted during the installation process, resulting in a short circuit of the circuit board, thereby damaging the electronic components. The rectangular electrical connector is connected to the cable, which facilitates the maintenance of the circuit board and reduces the connection of lines.

[0035] Advantages of this embodiment: through the bottom plate and the symmetrically arranged side walls and the circuit board grooves arranged on the side walls, the two ends of the circuit board are connected with guide rails, the guide rails are installed in the circuit board grooves, and can slide up and down in the circuit board grooves. By sliding the guide rails in the grooves on the side walls, the circuit board can be quickly taken out of the grooves, which is convenient for the maintenance and replacement of the circuit board; through the arrangement of the circuit board cover, the circuit board can be prevented from loosening up and down, causing the circuit board to slip out of the fixing device. Through the limitation of the circuit board groove, the bottom plate and the circuit board cover, it is ensured that the circuit board will not shake in the housing, reducing the risk of cable falling off and / or electronic component damage caused by vibration and displacement. By providing a fixing frame on the housing, the fixing device can be stably installed in the inner cavity of the electronic device, reducing the damage of electronic components caused by the shaking of the electronic device. By installing a rectangular electrical connector with an anti-misinsertion structure on the bottom plate and / or the circuit board cover 3, the circuit board can be effectively prevented from being misinserted during the installation process, thereby avoiding short circuit of the circuit board and damage to electronic components.

[0036] Embodiment 3:

[0037] like Figure 1 and Figure 2As shown, a circuit board fixing device for a marine electronic device comprises a housing 1, a circuit board 2 and a circuit board cover 3. The housing 1 comprises a bottom plate 11 and at least two symmetrically arranged side walls 12. The circuit board is connected between the two side walls 12. A circuit board groove 121 is provided on the inner side of the side wall 12. Guide rails 4 are fixedly connected to both ends of the circuit board 2. The guide rails 4 are installed in the circuit board groove 121 and can slide up and down in the circuit board groove 121. The circuit board cover 3 is fixedly installed on the top of the side wall 12, or the circuit board cover 3 covers the top of the circuit board 2, that is, the circuit board cover 3 is arranged to cover the top of the circuit board and is connected to the side wall. The circuit board cover is fixedly connected to the side wall by screws. The circuit board cover 3 is used to limit the position of the circuit board 2 so that it is fixedly installed in the housing. Inside, and through the limitation of the circuit board groove 121, the bottom plate 11 and the circuit board cover 3, it is ensured that the circuit board will not move in the shell 1, and it can be ensured that the circuit board will not shake in the shell, reducing the risk of cable falling off and / or electronic component damage caused by vibration and displacement; the grooves are set in multiples, and multiple circuit boards can be arranged as needed; preferably, the shell 1 is square, the side walls 12 are 2 to 4, the bottom plate 11 and the side walls 12 can be integrally formed, or the bottom plate 11 and the side walls 12 and the side walls 12 are fixedly connected by screws to form a shell 1, preferably, there are 4 side walls, the 4 side walls are interconnected and surrounded on the bottom plate 11, and the separation of the bottom plate 11 and the side walls 12 can make it more convenient to fix the circuit board fixing device of the marine electronic equipment in the inner cavity of the electrical appliance.

[0038] The guide rail 4 is fixedly connected to the circuit board 2, and the fixing connection method can be screws, buckles, glue, etc. The guide rail 4 includes a base plate 41 and a blade 42 that are vertically connected to each other, and its cross-sectional shape can be "L", "T", "Y", "mountain" and other shapes. The base plate 41 is connected to the circuit board slot 121, and the blade 42 is connected to the circuit board (2).

[0039] In order to facilitate the cables in the circuit board to pass through the circuit board fixing device of the marine electronic equipment, the housing 1 and / or the circuit board cover 3 are provided with cable openings 13 for accommodating the cables to pass through, so as to facilitate the cables at different positions on the circuit board to pass through.

[0040] In order to facilitate the fixing and installation of the circuit board fixture of the marine electronic equipment to the inner cavity of the electronic equipment, a fixing frame 122 is provided on the housing 1, and the frame 122 can be provided on the bottom plate 11, or on the side wall 12. The connection method of the fixing frame 122 to the inner cavity of the electronic equipment housing can be threaded connection, snap connection, etc. By stably installing the circuit board fixture of the marine electronic equipment in the inner cavity of the electronic equipment through the fixing device, the damage of the electronic components caused by the shaking of the electronic equipment can be reduced.

[0041] The circuit board fixing device of the marine electronic equipment includes a rectangular electrical connector 7, and the rectangular electrical connector 7 includes a rectangular connector socket 71 and a rectangular connector plug 72. The rectangular connector socket 71 is installed on the bottom plate 11 and / or the circuit board cover plate 3, and the rectangular connector plug 72 is installed on the circuit board 2. The rectangular connector plug 72 is matched and connected with the rectangular connector socket 71. The rectangular electrical connector 7 is an anti-misinsertion rectangular electrical connector. The anti-misinsertion rectangular electrical connector 7 can prevent the circuit board from being misinserted during the installation process, resulting in a short circuit of the circuit board and thus damaging the electronic components. The rectangular electrical connector 7 is connected to the cable to facilitate the maintenance of the circuit board and reduce the connection of the lines.

[0042] The circuit board fixing device of the marine electronic equipment also includes a partition 5, and a vertical partition groove 123 is also provided on the inner side of the side wall 12. Usually, the partition groove 123 is located between the two circuit board grooves 121, and the partition 5 is installed in the partition groove 123, that is, the partition 5 is arranged between the two adjacent circuit boards; the partition 5 is a metal partition, preferably a partition made of stainless steel. Through the arrangement of the partition 5, the electromagnetic interference between the circuit boards can be effectively reduced, and the working stability of the equipment can be increased.

[0043] Advantages of this embodiment: through the bottom plate and the symmetrically arranged side walls and the circuit board grooves arranged on the side walls, the two ends of the circuit board are connected with guide rails, the guide rails are installed in the circuit board grooves, and can slide up and down in the circuit board grooves. By sliding the guide rails in the grooves on the side walls, the circuit board can be quickly taken out of the grooves, which is convenient for the maintenance and replacement of the circuit board; by setting the circuit board cover, the circuit board can be prevented from loosening forward and backward, causing the circuit board to slip out of the fixing device. By limiting the circuit board grooves, the bottom plate and the circuit board cover, it is ensured that the circuit board will not shake in the housing, reducing the risk of cable falling off and / or electronic component damage caused by vibration and displacement. By setting a fixing frame on the housing, the fixing device can be stably installed in the inner cavity of the electronic device, reducing the damage of electronic components caused by the shaking of the electronic device. By installing a rectangular electrical connector with an anti-misinsertion structure on the bottom plate and / or the circuit board cover 3, the circuit board can be effectively prevented from being misinserted during the installation process, thereby avoiding short circuits on the circuit board and damaging electronic components. By setting the partition, the electromagnetic interference between the circuit boards can be effectively reduced, and the working stability of the equipment can be increased.

[0044] The advantages of the implementation of the utility model are as follows: through the bottom plate and the symmetrically arranged side walls and the circuit board grooves arranged on the side walls, the two ends of the circuit board are connected with guide rails, the guide rails are installed in the circuit board grooves, and can slide up and down in the circuit board grooves. By sliding the guide rails in the grooves on the side walls, the circuit board can be quickly taken out of the grooves, which is convenient for the maintenance and replacement of the circuit board; through the arrangement of the circuit board cover, the circuit board can be prevented from loosening up and down, causing the circuit board to slip out of the fixing device. Through the limitation of the circuit board groove, the bottom plate and the circuit board cover, it is ensured that the circuit board will not shake in the housing, reducing the risk of cable falling off and / or damage to electronic components caused by vibration and displacement. By providing a fixing frame on the housing, the fixing device can be stably installed in the inner cavity of the electronic device, reducing the damage to the electronic components caused by the shaking of the electronic device. By installing a rectangular electrical connector with an anti-misinsertion structure on the bottom plate and / or the circuit board cover 3, the circuit board can be effectively prevented from being misinserted during the installation process, thereby avoiding short circuits on the circuit board and damaging electronic components. Through the arrangement of the partition, the electromagnetic interference between the circuit boards can be effectively reduced, and the working stability of the equipment can be increased. The circuit board fixing device for marine electronic equipment provided by the utility model can effectively reduce the risk of damage to electronic components caused by vibration and displacement, and improve the convenience of circuit board maintenance and replacement, through the designs of guide rails sliding in circuit board grooves, circuit board cover plate anti-loosening, rectangular electrical connector anti-misplugging and partition plate anti-interference.

[0045] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A circuit board fixing device for a marine electronic device, comprising a housing (1) and a circuit board (2), wherein the housing (1) comprises a bottom plate (11) and at least two symmetrically arranged side walls (12), wherein the circuit board is connected between the two side walls (12), and characterized in that: A vertical circuit board slot (121) is provided on the inner side of the side wall (12); guide rails (4) are provided at both ends of the circuit board (2) where the circuit board (2) is connected to the two side walls; the guide rails (4) are installed in the circuit board slot (121) and can slide up and down in the circuit board slot (121); a circuit board cover plate (3) is provided above the circuit board; both ends of the circuit board cover plate are connected to the side walls to limit the position of the circuit board (2).

2. The circuit board fixing device for marine electronic equipment according to claim 1, characterized in that: The fixing device also includes a rectangular electrical connector (7), which includes a rectangular connector plug (72) and a rectangular connector socket (71) that are matingly connected to each other, the rectangular connector plug (72) is fixedly arranged on the circuit board, and the rectangular connector socket (71) is fixedly arranged on the bottom plate and / or the circuit board cover.

3. The circuit board fixing device for marine electronic equipment according to claim 2, characterized in that: The rectangular electrical connector (7) is an anti-misinsertion rectangular electrical connector.

4. The circuit board fixing device for marine electronic equipment according to claim 1, characterized in that: The guide rail comprises a vertically connected base plate (41) and a blade plate (42), the cross section of which is L-shaped or T-shaped, the blade plate (42) being connected to the circuit board (2), and the base plate (41) being connected to the circuit board slot (121).

5. The circuit board fixing device for marine electronic equipment according to claim 1, characterized in that: The housing (1) further comprises two connecting plates (14) connecting the edges of the two side walls (12); the bottom plate (11), the connecting plates (14), the side walls (12) and the circuit board cover plate (3) are connected to each other to form a hollow box.

6. The circuit board fixing device for marine electronic equipment according to claim 1, characterized in that: The housing (1) and / or the circuit board cover (3) is provided with a cable opening (13) for accommodating the passage of cables.

7. The circuit board fixing device for marine electronic equipment according to claim 1, characterized in that: A fixing frame (122) is provided on the housing (1).

8. The circuit board fixing device for marine electronic equipment according to claim 1, characterized in that: The side wall is also provided with a fixing hole, and the fixing hole facilitates the fixing device to be installed in the marine electronic equipment.

9. The circuit board fixing device for marine electronic equipment according to any one of claims 1 to 8, characterized in that: It also comprises a partition (5), which is arranged between two adjacent circuit boards (2); a vertical partition groove (123) is also provided on the inner side of the side wall (12), and the partition (5) is installed in the partition groove (123).

10. The circuit board fixing device for marine electronic equipment according to claim 9, characterized in that: The partition (5) is a metal partition, and is used to reduce electromagnetic interference between circuit boards.

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