Protective shell of geomagnetic sensor

Abstract

The utility model discloses a protective housing of a geomagnetic sensor, which comprises an outer cylinder, the outer wall of the outer cylinder is uniformly and fixedly connected with a plurality of thickened fins, the outer wall of the outer cylinder is fixedly sleeved with an anti-adhesion outer sleeve, an inner cylinder is placed in the outer cylinder, the inner wall of the top of the outer cylinder is in threaded connection with a top cover, and the top cover is in threaded connection with the inner wall of the top of the outer cylinder. The top of the top cover is fixedly connected with a protective cover, the interior of the top cover is fixedly connected with an isolation piece, the interior of the inner cylinder is fixedly connected with a battery fixing piece, and the bottom of the battery fixing piece is fixedly connected with a battery. Through the arrangement of the outer cylinder, the thickened fins, the anti-adhesion outer sleeve, the inner cylinder, the silica gel sealing ring, the top cover, the protective cover, the isolation piece and the battery fixing piece, the overall stability is improved, the anti-compression effect is achieved, theft and digging are effectively prevented, the circuit board and the antenna are arranged at high positions, the waterproof effect is enhanced, and the service life is prolonged. Meanwhile, the central position of the top of the top cover is prevented from being stressed greatly, and the whole device is easy to disassemble and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of geomagnetic sensors, in particular to a protective shell of a geomagnetic sensor. Background Art

[0002] The role of geomagnetic sensors in automobiles is to detect the presence and direction of vehicles. The working principle of geomagnetic sensors is based on the principle of electromagnetic induction. It detects the presence of vehicles by measuring changes in the earth's magnetic field. When a vehicle passes near a geomagnetic sensor, the ferromagnetic material contained in the vehicle itself will affect the geomagnetic signal in the area where the vehicle exists, causing the earth's magnetic field lines to bend. The geomagnetic sensor can sensitively perceive changes in this signal and obtain relevant information about the detection target, such as the presence and direction of the vehicle through signal analysis. Generally, geomagnetic sensors are installed in a ground-embedded manner.

[0003] In the prior art, since the geomagnetic sensor is embedded in the bottom surface, during the existing use, the top of the geomagnetic sensor is easily compressed when a car or pedestrian passes by. After long-term use, the whole geomagnetic sensor becomes loose and is more likely to deform, which greatly affects the internal electronic components. Therefore, we propose a protective shell for the geomagnetic sensor to solve the above problem. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a protective shell of a geomagnetic sensor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A protective shell of a geomagnetic sensor comprises an outer cylinder, the outer wall of the outer cylinder is evenly fixedly connected with a plurality of thickened ribs, the outer wall of the outer cylinder is fixedly sleeved with an anti-adhesion jacket, an inner cylinder is placed inside the outer cylinder, a top cover is threadedly connected to the top inner wall of the outer cylinder, a protective cover is fixedly connected to the top of the top cover, an isolation sheet is fixedly connected to the inside of the top cover, a battery fixing sheet is fixedly connected to the inside of the inner cylinder, and a battery is fixedly connected to the bottom of the battery fixing sheet.

[0007] Preferably, a wiring hole is provided at the bottom of the isolation sheet, and a power line on the battery is connected to the circuit board through the wiring hole.

[0008] Preferably, an annular groove is provided at the top of the outer cylinder, a silicone sealing ring is placed on the inner wall of the annular groove, and waterproof glue can be applied to the annular sealing ring during installation to increase waterproofness.

[0009] Preferably, a circuit board and an antenna are installed between the isolation sheet and the top cover.

[0010] Preferably, the bottom of the battery is in contact with the inner wall of the inner cylinder, and the protection of the battery is increased by providing the inner cylinder.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] This solution increases the overall stability and plays a compressive resistance role by providing an outer cylinder, thickened ribs, an anti-adhesion jacket, an inner cylinder, a silicone sealing ring, a top cover, a protective cover, an isolation sheet and a battery fixing sheet, and effectively prevents theft and excavation. The circuit board and the antenna are arranged in a high position to enhance the waterproof effect and avoid the top center of the top cover being subjected to a large force. The whole is easy to disassemble and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods 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 paying creative work.

[0014] Figure 1 This is a schematic diagram of the explosion structure of a protective shell of a geomagnetic sensor proposed by the utility model;

[0015] Figure 2 This is a three-dimensional structural schematic diagram of a protective shell of a geomagnetic sensor proposed by the utility model;

[0016] Figure 3 A schematic diagram of the disassembly structure of the protective cover and the isolation sheet of the protective housing of a geomagnetic sensor proposed by the utility model;

[0017] Figure 4 A schematic diagram of a battery fixing plate and a battery disassembly structure of a protective housing of a geomagnetic sensor proposed by the utility model;

[0018] Figure 5 The utility model provides a schematic diagram of the outer cylinder structure of the protective shell of the geomagnetic sensor.

[0019] In the figure: 1. outer cylinder; 2. thickened ribs; 3. anti-adhesion jacket; 4. inner cylinder; 5. silicone sealing ring; 6. top cover; 7. protective cover; 8. isolation sheet; 9. battery fixing sheet; 10. battery. DETAILED DESCRIPTION

[0020] 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.

[0021] Depend on Figure 1-Figure 5 As shown, it relates to a protective shell of a geomagnetic sensor, including an outer tube 1, the outer wall of the outer tube 1 is evenly and fixedly connected with a plurality of thickened ribs 2, the plurality of thickened ribs 2 increase the contact area, play a role in pressure resistance, and effectively prevent theft and excavation, and the outer wall of the outer tube 1 is fixedly sleeved with an anti-adhesion jacket 3.

[0022] An inner cylinder 4 is placed inside the outer cylinder 1 . An annular groove is provided on the top of the outer cylinder 1 . A silicone sealing ring 5 is placed on the inner wall of the annular groove. The silicone sealing ring 5 and the top cover 6 seal the top of the outer cylinder 1 .

[0023] The top inner wall of the outer cylinder 1 is threadedly connected with a top cover 6, and the top of the top cover 6 is fixedly connected with a protective cover 7 by screws, and the threaded connection method is used to form a detachable installation to facilitate subsequent maintenance.

[0024] The interior of the top cover 6 is fixedly connected with an isolation piece 8 by screws, and a circuit board and an antenna are installed between the isolation piece 8 and the top cover 6. The circuit board and the antenna are located between the top cover 6 and the isolation piece 8 and are arranged at a high position to enhance the waterproof effect.

[0025] A wiring hole is provided at the bottom of the isolation sheet 8, and a battery fixing sheet 9 is fixedly connected to the inside of the inner tube 4 by screws. A battery 10 is fixedly connected to the bottom of the battery fixing sheet 9, and the battery fixing sheet 9 supports the battery 10. The inner tube 4 cooperates with the outer tube 1 to form a protection, and the bottom of the battery 10 contacts the inner wall of the inner tube 4.

[0026] Working principle: When in use, drill a hole in the ground in advance, place the outer cylinder 1 in the drilled hole, and then use existing cement mortar or epoxy resin to fill the gap, clean the top surface of the outer cylinder 1, and at this time, the multiple thickened ribs 2 on the outer cylinder 1 increase the contact area, play a role in pressure resistance, and effectively prevent theft and excavation. The inner cylinder 4 and the battery fixing plate 9 provide secondary protection for the battery 10 to improve the stability during use. The silicone sealing ring 5 and the top cover 6 seal the top of the outer cylinder 1, and because the circuit board and the antenna are located between the top cover 6 and the isolation plate 8, they are in a high position to enhance the waterproof effect. The protective cover 7 set on the top of the top cover 6 protects the top cover 6 to avoid the top center of the top cover 6 from being subjected to greater force and causing preferential deformation; when maintaining the battery 10 or the circuit board, it is only necessary to use the existing cross wrench and screwdriver to disassemble the top cover 6, the isolation plate 8 and the battery fixing plate 9 in turn. The overall protection level is high and it is easy to disassemble for easy use.

[0027] The standard parts used in the utility model can all be purchased from the market, special-shaped parts can be customized according to the description in the specification and the drawings, the specific connection methods of each part all adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art, the machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0028] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A protective housing for a geomagnetic sensor, comprising an outer cylinder (1), characterized in that: The outer wall of the outer cylinder (1) is evenly and fixedly connected with a plurality of thickened ribs (2); the outer wall of the outer cylinder (1) is fixedly provided with an anti-adhesion jacket (3); an inner cylinder (4) is placed inside the outer cylinder (1); a top cover (6) is threadedly connected to the inner wall of the top of the outer cylinder (1); a protective cover (7) is fixedly connected to the top of the top cover (6); an isolation sheet (8) is fixedly connected to the inside of the top cover (6); a battery fixing sheet (9) is fixedly connected to the inside of the inner cylinder (4); and a battery (10) is fixedly connected to the bottom of the battery fixing sheet (9).

2. The protective housing of a geomagnetic sensor according to claim 1, characterized in that: A wiring hole is provided at the bottom of the isolation sheet (8).

3. The protective housing of a geomagnetic sensor according to claim 1, characterized in that: An annular groove is provided at the top of the outer cylinder (1), and a silicone sealing ring (5) is placed on the inner wall of the annular groove.

4. The protective housing of a geomagnetic sensor according to claim 1, characterized in that: A circuit board and an antenna are installed between the isolation sheet (8) and the top cover (6).

5. The protective housing of a geomagnetic sensor according to claim 1, characterized in that: The bottom of the battery (10) contacts the inner wall of the inner cylinder (4).

Images