Electromagnetic shielding shell of Beidou navigation terminal

Abstract

The utility model discloses an electromagnetic shielding housing of a Beidou navigation terminal, and relates to the technical field of Beidou navigation terminal installation. The device comprises a mounting plate, the top of the mounting plate is fixedly connected with a shell, and the top of the shell is provided with a top cover. By rotating the driving worm, the driving worm gear can be driven to rotate, so that the first bidirectional lead screw is driven to rotate, the two sliding sleeves move relatively, and the driven worm on the surface of the first bidirectional lead screw can drive the driven worm gear to rotate, so that the two sliding blocks on the surface of the second bidirectional lead screw move relatively. The four limiting plates are driven to move at the same time to clamp and limit the Beidou navigation terminal, the hexagonal bolts on the periphery of the inner cavity of the top cover are in threaded connection with the inner cavity of the mounting block, the top cover can position the top of the terminal, the display end and the control end of the terminal can be mounted through the external interface, and the terminal can be sealed through the sealing strip. And the electromagnetic shielding performance is improved.

Description

Technical Field

[0001] This utility model belongs to the field of Beidou navigation terminal installation technology, and in particular relates to the electromagnetic shielding shell of Beidou navigation terminals. Background Technology

[0002] Beidou navigation terminals are positioning and navigation devices based on my country's Beidou Satellite Navigation System (BDS), designed to provide users with accurate location information and time services. These terminals typically integrate satellite receiving modules, processing units, and communication interfaces. Beidou navigation terminals are widely used in various fields such as transportation, agricultural monitoring, disaster emergency response, and urban management. They can support multiple positioning methods, including single-point positioning, differential positioning, and real-time dynamic positioning, to meet the needs of different scenarios.

[0003] Existing BeiDou navigation terminals are typically exposed to the external environment during use, making them susceptible to physical damage, which can lead to equipment malfunctions and increased overall maintenance costs. Furthermore, the terminals themselves cannot effectively block external electromagnetic interference, resulting in unclear navigation signal reception and affecting positioning accuracy, potentially causing users to be unable to obtain accurate location data. To address these issues, we provide an electromagnetic shielding housing for BeiDou navigation terminals. Utility Model Content

[0004] The purpose of this invention is to provide an electromagnetic shielding housing for Beidou navigation terminals. By combining the installation components and the shielding components, the invention solves the problem that existing Beidou navigation terminals lack a reliable housing, which can easily lead to equipment failure and affect signal reception.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to an electromagnetic shielding housing for a Beidou navigation terminal, comprising a mounting plate, a shell fixedly connected to the top of the mounting plate, and a top cover on the top of the shell; an installation assembly is provided in the inner cavity of the shell, the installation assembly comprising a first bidirectional lead screw movably connected to one side of the bottom of the inner cavity of the shell, with sliding sleeves threaded to both sides of the surface of the first bidirectional lead screw; a second bidirectional lead screw movably connected to the other side of the bottom of the inner cavity of the shell, with sliders threaded to both sides of the surface of the second bidirectional lead screw; a limiting plate is fixedly connected to the top of the sliding sleeves and the sliders; a positioning element is provided on the surface of the top cover; a shielding assembly is provided at the bottom of the top cover, the shielding assembly comprising a conductive gasket fixedly connected to one side of the limiting plate; an external interface is provided in the inner cavity of the top cover, and a sealing strip is fixedly connected to the bottom of the external interface.

[0007] The present invention is further configured such that the positioning component includes a mounting block, the mounting block is fixedly connected to the periphery of the outer shell surface, and hexagonal bolts are threadedly connected to the periphery of the inner cavity of the top cover, the surface of the hexagonal bolts being threadedly connected to the inner cavity of the mounting block.

[0008] The present invention is further configured such that an active worm gear is movably connected to one side of the inner cavity of the outer shell, and an active worm wheel is fixedly connected to one side of the surface of the first bidirectional lead screw, wherein the active worm gear meshes with the active worm wheel.

[0009] The present invention is further configured such that a driven worm is fixedly connected to the surface of the first bidirectional lead screw, and a driven worm wheel is fixedly connected to the surface of the second bidirectional lead screw, wherein the driven worm meshes with the driven worm wheel.

[0010] The present invention is further configured such that a square groove is provided on one side of the inner cavity of the outer shell, and a limiting rod is fixedly connected to the top of the inner cavity of the square groove, and the surface of the limiting rod is slidably connected to one side of the inner cavity of the slider.

[0011] The present invention is further configured such that a rectangular groove is provided on the other side of the inner cavity of the outer shell, a limiting strip is fixedly connected to the bottom of the rectangular groove, and a guide block is fixedly connected to the bottom of the sliding sleeve, with the bottom of the guide block slidably connected to the surface of the limiting strip.

[0012] The present invention is further configured such that a circular hole is provided on one side of the inner cavity of the top cover, and a handwheel is fixedly connected to one end of the active worm gear. The surface of the handwheel is slidably connected to the inner cavity of the circular hole, and a limit pin is threadedly connected to one side of the inner cavity of the handwheel.

[0013] The present invention is further provided that threaded holes are provided around the inner cavity of the mounting plate, and mounting bolts are threadedly connected to the inner cavity of the threaded holes.

[0014] This utility model has the following beneficial effects:

[0015] This invention utilizes a rotating active worm gear to drive a rotating active worm wheel, which in turn drives a first bidirectional lead screw. This causes the two sliding sleeves to move relative to each other. A driven worm gear on the surface of the first bidirectional lead screw drives a driven worm wheel, which in turn causes the two sliders on the surface of the second bidirectional lead screw to move relative to each other. This causes four limiting plates to move simultaneously, clamping and limiting the Beidou navigation terminal. Hexagonal bolts around the inner cavity of the top cover are threadedly connected to the inner cavity of the mounting block, allowing the top cover to be positioned on the top of the terminal. An external interface allows for the installation of the terminal's display and control terminals. A sealing strip provides sealing, improving electromagnetic shielding performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 The three-dimensional structure of the electromagnetic shielding shell for Beidou navigation terminals Figure 1 ;

[0018] Figure 2 The three-dimensional structure of the electromagnetic shielding shell for Beidou navigation terminals Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of the outer shell within the electromagnetic shielding housing of a Beidou navigation terminal.

[0020] Figure 4 This is a schematic diagram of the internal structure of the outer shell of the electromagnetic shielding housing of a Beidou navigation terminal.

[0021] Figure 5 This is a schematic diagram of the top and bottom structure of the electromagnetic shielding shell of a Beidou navigation terminal.

[0022] In the attached diagram: 1. Mounting plate; 2. Housing; 3. Top cover; 4. First double-acting lead screw; 5. Sliding sleeve; 6. Second double-acting lead screw; 7. Slider; 8. Limiting plate; 9. Conductive gasket; 10. External interface; 11. Sealing strip; 12. Mounting block; 13. Hex bolt; 14. Driving worm gear; 15. Driving worm wheel; 16. Driven worm gear; 17. Driven worm wheel; 18. Limiting rod; 19. Mounting bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments. Specific Implementation Example 1

[0025] Please see Figure 1-5 This utility model is an electromagnetic shielding shell for a Beidou navigation terminal, including a mounting plate 1, a shell 2 fixedly connected to the top of the mounting plate 1, and a top cover 3 provided on the top of the shell 2; an installation assembly is provided in the inner cavity of the shell 2, the installation assembly including a first bidirectional lead screw 4, the first bidirectional lead screw 4 being movably connected to one side of the bottom of the inner cavity of the shell 2, and sliding sleeves 5 being threadedly connected to both sides of the surface of the first bidirectional lead screw 4; a second bidirectional lead screw 6 is movably connected to the other side of the bottom of the inner cavity of the shell 2, and sliders 7 being threadedly connected to both sides of the surface of the second bidirectional lead screw 6; a limiting plate 8 is fixedly connected to the top of both the sliding sleeves 5 and the sliders 7; a positioning element is provided on the surface of the top cover 3; a shielding assembly is provided at the bottom of the top cover 3, the shielding assembly including a conductive gasket 9, the conductive gasket 9 being fixedly connected to one side of the limiting plate 8; an external interface 10 is opened in the inner cavity of the top cover 3, and a sealing strip 11 is fixedly connected to the bottom of the external interface 10.

[0026] Specifically: the inner cavity of the outer shell 2 is covered with a special electromagnetic shielding film, which can effectively block electromagnetic interference. The first bidirectional lead screw 4 is set at the bottom of the inner cavity of the outer shell 2 and is arranged horizontally in the figure. The second bidirectional lead screw 6 is arranged vertically in the figure, located above the first bidirectional lead screw 4, and does not affect the placement of the terminal. The limiting plate 8 can clamp and fix the terminal around its perimeter. The conductive gasket 9 can increase the sealing and shielding effect of the terminal. The sealing strip 11 can seal the protruding display port and control port of the terminal with the inner cavity of the top cover 3 to prevent electromagnetic leakage. The external interface 10 can be customized according to the terminal control port and display port. Specific Implementation Example 2

[0028] Please see Figure 1-5 Based on the first specific embodiment, the positioning component includes a mounting block 12, which is fixedly connected to the perimeter of the outer shell 2. Hexagonal bolts 13 are threadedly connected to the perimeter of the inner cavity of the top cover 3, with the surfaces of the hexagonal bolts 13 threadedly connected to the inner cavity of the mounting block 12. A driving worm gear 14 is movably connected to one side of the inner cavity of the outer shell 2. A driving worm wheel 15 is fixedly connected to one side of the surface of the first bidirectional lead screw 4, meshing with the driving worm gear 14. A driven worm gear 16 is fixedly connected to the surface of the first bidirectional lead screw 4, and a driven worm wheel 17 is fixedly connected to the surface of the second bidirectional lead screw 6, meshing with the driven worm gear 16. A square groove is provided on one side of the inner cavity of the outer shell 2. A limit rod 18 is fixedly connected to the top of the inner cavity of the square groove. The surface of the limit rod 18 is slidably connected to one side of the inner cavity of the slider 7. A rectangular groove is provided on the other side of the inner cavity of the outer shell 2. A limit strip is fixedly connected to the bottom of the rectangular groove. A guide block is fixedly connected to the bottom of the sliding sleeve 5. The bottom of the guide block is slidably connected to the surface of the limit strip. A round hole is provided on one side of the inner cavity of the top cover 3. A handwheel is fixedly connected to one end of the active worm gear 14. The surface of the handwheel is slidably connected to the inner cavity of the round hole. A limit pin is threadedly connected to one side of the inner cavity of the handwheel. Threaded holes are provided around the inner cavity of the mounting plate 1. Mounting bolts 19 are threadedly connected to the inner cavity of the threaded holes.

[0029] Specifically: The inner cavity of the mounting block 12 has a threaded opening to facilitate the installation of the top cover 3. After the terminal is installed inside the outer shell 2, it will not contact the surface of the worm gear. The square groove allows the second bidirectional lead screw 6 to be placed inside the outer shell 2. The limiting rod 18 can limit the slider 7. The rectangular groove allows the first bidirectional lead screw 4 to be placed inside the outer shell 2. The surface of the limiting strip slides and the bottom of the guide block to limit the sliding sleeve 5. The round hole ensures that the handwheel will not affect the installation when the top cover 3 is installed. The limiting pin can limit the handwheel. Usually, the size of the outer shell 2 of the terminal is customized according to the size of the terminal. Therefore, the simultaneous movement of the limiting plates 8 around the perimeter can clamp and fix the terminal. In the figure, there is a threaded hole inside the mounting plate 1 without a mounting bolt 19. The purpose is to make it easy to observe the position of the threaded hole.

[0030] The working principle of this utility model is as follows: When it is necessary to install the Beidou navigation terminal inside this electromagnetic shielding shell, first place the terminal inside the shell 2, then turn the handwheel. The handwheel drives the active worm gear 14 to rotate, the active worm gear 14 drives the active worm wheel 15 to rotate, the active worm wheel 15 drives the first bidirectional lead screw 4 to rotate, the first bidirectional lead screw 4 simultaneously drives the two sliding sleeves 5 to move relative to each other, and the driven worm gear 16 to rotate. The sliding sleeves 5 drive the limiting plate 8 to move, and the limiting plate 8 clamps and limits the two sides of the terminal. The driven worm gear 16 drives the driven worm wheel 17 to rotate, the driven worm wheel 17 drives the second bidirectional lead screw 6 to rotate, the second bidirectional lead screw 6 drives the two sliders 7 to move relative to each other, and the sliders 7 drive the limiting plate 8 at their top to clamp and limit the other two sides of the terminal. In this way, the terminal can be installed inside the shell 2.

[0031] After installing the terminal inside the housing 2, place the top cover 3 on top of the housing 2, then align the external interface 10 with the control port and display port of the terminal, and seal the connection with the sealing strip 11 to prevent electromagnetic leakage. Next, screw the hexagonal bolt 13 into the mounting block 12 to position the terminal. Finally, install the housing 2 in the required position using the threaded holes and mounting bolts 19.

[0032] All standard parts used in this invention can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through the control unit. The control circuit of the control unit can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Therefore, the control method and circuit connection will not be explained in detail in this invention.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. An electromagnetic shielding housing for a Beidou navigation terminal, including a mounting plate (1), characterized in that: The mounting plate (1) is fixedly connected to the top of the outer shell (2), and the top of the outer shell (2) is provided with a top cover (3); The inner cavity of the outer shell (2) is provided with an installation assembly, which includes a first bidirectional lead screw (4), which is movably connected to one side of the bottom of the inner cavity of the outer shell (2). Both sides of the surface of the first bidirectional lead screw (4) are threaded with sliding sleeves (5). The other side of the bottom of the inner cavity of the outer shell (2) is movably connected with a second bidirectional lead screw (6). Both sides of the surface of the second bidirectional lead screw (6) are threaded with sliders (7). The top of the sliding sleeves (5) and the sliders (7) are fixedly connected with limit plates (8). The surface of the top cover (3) is provided with positioning elements. The top cover (3) is provided with a shielding component at the bottom. The shielding component includes a conductive pad (9). The conductive pad (9) is fixedly connected to one side of the limiting plate (8). The top cover (3) has an external interface (10) in its inner cavity. A sealing strip (11) is fixedly connected to the bottom of the external interface (10).

2. The electromagnetic shielding shell of the Beidou navigation terminal according to claim 1, characterized in that: The positioning component includes a mounting block (12), which is fixedly connected to the periphery of the outer shell (2). The inner cavity of the top cover (3) is threaded with hexagonal bolts (13), and the surface of the hexagonal bolts (13) is threaded to the inner cavity of the mounting block (12).

3. The electromagnetic shielding shell of the Beidou navigation terminal according to claim 1, characterized in that: The inner cavity of the outer shell (2) is movably connected to one side of the active worm gear (14), and the surface of the first bidirectional screw (4) is fixedly connected to one side of the active worm wheel (15). The active worm gear (14) meshes with the active worm wheel (15).

4. The electromagnetic shielding shell of the Beidou navigation terminal according to claim 1, characterized in that: The first bidirectional lead screw (4) is fixedly connected to a driven worm (16), and the second bidirectional lead screw (6) is fixedly connected to a driven worm wheel (17), wherein the driven worm (16) meshes with the driven worm wheel (17).

5. The electromagnetic shielding shell of the Beidou navigation terminal according to claim 1, characterized in that: A square groove is provided on one side of the inner cavity of the outer shell (2), and a limiting rod (18) is fixedly connected to the top of the inner cavity of the square groove. The surface of the limiting rod (18) is slidably connected to one side of the inner cavity of the slider (7).

6. The electromagnetic shielding shell of the Beidou navigation terminal according to claim 1, characterized in that: A rectangular groove is provided on the other side of the inner cavity of the outer shell (2). A limit strip is fixedly connected to the bottom of the rectangular groove. A guide block is fixedly connected to the bottom of the sliding sleeve (5). The bottom of the guide block is slidably connected to the surface of the limit strip.

7. The electromagnetic shielding shell of the Beidou navigation terminal according to claim 3, characterized in that: The top cover (3) has a round hole on one side of its inner cavity. One end of the active worm gear (14) is fixedly connected to a handwheel. The surface of the handwheel is slidably connected to the inner cavity of the round hole. A limit pin is threadedly connected to one side of the inner cavity of the handwheel.

8. The electromagnetic shielding shell of the Beidou navigation terminal according to claim 1, characterized in that: The mounting plate (1) has threaded holes around its inner cavity, and mounting bolts (19) are threaded into the inner cavity of the threaded holes.

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