Vehicle geomagnetic sensor

Abstract

The utility model relates to a vehicle geomagnetic sensor in the technical field of geomagnetic sensors. The upper end of the geomagnetic sensor body is provided with a sealing cover used for sealing the inner cavity of the geomagnetic sensor body. Before a sealing cover is placed at the upper end of a geomagnetic sensor body, a waterproof rubber ring is placed in a groove cavity of an annular groove I, and when the geomagnetic sensor body is sealed by the sealing cover, the upper end of the waterproof rubber ring is clamped into an annular groove II, and the waterproof rubber ring is extruded, so that the waterproof rubber ring is tightly attached to a push plate, and an elastic sheet is extruded; and after the waterproof rubber ring is used for a long time, the elastic sheet is matched with the push plate to push the waterproof rubber ring, so that the waterproof rubber ring blocks a gap facing the inner cavity of the geomagnetic sensor body, water is prevented from flowing to the inner cavity of the geomagnetic sensor body, and water in the annular groove I can be discharged downwards through a water through hole.

Description

Technical Field

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

[0002] Geomagnetic sensors can be used to detect the presence of vehicles and identify vehicle models. The data acquisition system plays a very important role in the traffic monitoring system. Geomagnetic sensors are a key part of the data acquisition system. The performance of the sensor plays a decisive role in the accuracy of the data acquisition system. Some more intelligent parking lots are usually equipped with some geomagnetic sensors, which can improve intelligence and bring convenience to the use and management of parking lots. At this stage, most geomagnetic sensors are pre-buried underground.

[0003] For example, a geomagnetic sensor for a smart parking lot disclosed in Chinese patent application number CN201920737117.6 has the following specific contents: a waterproof rubber ring is embedded in the annular groove, and the waterproof rubber ring can seal the joint between the fixed housing and the housing cover to achieve a waterproof effect. However, the following technical problems exist:

[0004] After long-term use, the waterproof effect of the waterproof rubber ring will weaken, and water will easily accumulate in the annular groove and eventually spread into the geomagnetic sensor, causing damage to the electronic components inside the geomagnetic sensor. Utility Model Content

[0005] In order to solve the problem that water easily diffuses from the annular groove into the interior of the geomagnetic sensor as mentioned in the above background technology, the present utility model provides the following technical solutions:

[0006] A vehicle geomagnetic sensor comprises a geomagnetic sensor body for detecting a vehicle;

[0007] A sealing cover for sealing the inner cavity of the geomagnetic sensor body is installed on the upper end of the geomagnetic sensor body.

[0008] A protective cover for protecting the geomagnetic sensor body is installed on the upper end of the sealing cover, and a locking component for locking the sealing cover and the protective cover in cooperation with the geomagnetic sensor body is installed on the edge of the geomagnetic sensor body.

[0009] A plurality of connecting rods are installed at the lower end of the protective cover.

[0010] The locking assembly comprises a screw rod, and a limiting hole three for limiting the position of the connecting rod is formed at the upper end of the screw rod.

[0011] Furthermore, a waterproof rubber ring is installed on the upper end of the geomagnetic sensor body, and a limiting hole 1 for limiting the locking component is opened on the upper edge of the geomagnetic sensor body.

[0012] Furthermore, an annular groove 1 for limiting the waterproof rubber ring is opened at the upper end of the geomagnetic sensor body, a push plate is installed in the groove cavity of the annular groove 1, and a spring piece is installed at one end of the push plate for cooperating with the push plate to push the waterproof rubber ring.

[0013] Furthermore, a plurality of water holes for water circulation are provided at the lower end of the groove cavity of the annular groove 1.

[0014] Furthermore, a buffer gasket 1 for buffering is installed at the upper end of the sealing cover, an annular groove 2 for limiting a pair of waterproof rubber rings in cooperation with the annular groove is installed at the lower end of the sealing cover, and a screw hole for limiting the screw is opened on the edge of the sealing cover.

[0015] Furthermore, a limit block is installed at the lower end of the connecting rod, and two limit blocks are provided.

[0016] Furthermore, a limit plate for limiting the limit block is installed in the hole cavity of the limit hole three, and a connecting pressure plate for cooperating with the limit block to control the limit plate to move downward is installed at one end of the limit plate, and a spring for pushing the limit plate is installed at the bottom of the groove cavity of the limit hole three, and the spring is at the bottom of the limit plate.

[0017] Furthermore, the screw includes a brick that facilitates the rotation of the screw, a limiting groove one is opened on one side of the groove cavity of the limiting hole three, and a limiting groove two for the entry and exit of the limiting block is opened at the lower end of the groove cavity of the limiting groove one.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] Before placing the sealing cover on the upper end of the geomagnetic sensor body, place the waterproof rubber ring in the groove cavity of the annular groove 1. When the sealing cover closes the geomagnetic sensor body, the upper end of the waterproof rubber ring is inserted into the annular groove 2, and the waterproof rubber ring is squeezed to make the waterproof rubber ring and the push plate stick together, and the spring piece is squeezed to deform the spring piece. After the waterproof rubber ring has been used for a long time, the spring piece cooperates with the push plate to push the waterproof rubber ring, so that the waterproof rubber ring blocks the gap toward the inner cavity of the geomagnetic sensor body to prevent water from flowing into the inner cavity of the geomagnetic sensor body. The water in the annular groove 1 can be discharged downward through the water hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the geomagnetic sensor body of the utility model;

[0022] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0023] Figure 4 This is a schematic diagram of the structure of the sealing cover of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the protective cover of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the locking assembly of the utility model;

[0026] Figure 7 It is a structural schematic diagram of the screw rod of the utility model.

[0027] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0028] 100 - geomagnetic sensor body, 110 - waterproof rubber ring, 120 - limiting hole 1, 130 - annular groove 1, 131 - push plate, 132 - spring sheet, 140 - water hole;

[0029] 200-sealing cover, 210-buffer washer 1, 220-annular groove 2, 230-screw hole;

[0030] 300-protective cover, 310-connecting rod, 311-limiting block;

[0031] 400-locking assembly, 410-screw, 411-rotating block, 412-limiting hole three, 413-limiting slot one, 414-limiting slot two, 420-limiting plate, 421-connecting pressure plate, 430-spring. DETAILED DESCRIPTION

[0032] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0033] See also Figure 1-Figure 7 The utility model provides a vehicle geomagnetic sensor, which can effectively protect the electronic components inside the geomagnetic sensor body 100.

[0034] A waterproof rubber ring 110 for waterproofing is installed at the upper end of the geomagnetic sensor body 100. A limiting hole 120 for limiting the locking assembly 400 is provided at the upper edge of the geomagnetic sensor body 100. The screw 410 is inserted into the screw hole 230 through the limiting hole 120. An annular groove 130 for limiting the waterproof rubber ring 110 is provided at the upper end of the geomagnetic sensor body 100. A push plate 131 is installed in the groove cavity of the annular groove 130. A spring 132 for cooperating with the push plate 131 to push the waterproof rubber ring 110 is fixedly installed at one end of the push plate 131, and one end of the spring 132 is fixedly installed on the inner wall of the annular groove 130. A plurality of water holes 140 for water supply and circulation are provided at the lower end of the groove cavity of the annular groove 130.

[0035] Before placing the sealing cover 200 on the upper end of the geomagnetic sensor body 100, the waterproof rubber ring 110 is placed in the groove cavity of the annular groove 130. When the sealing cover 200 closes the geomagnetic sensor body 100, the upper end of the waterproof rubber ring 110 is inserted into the annular groove 220, and the waterproof rubber ring 110 is squeezed so that the waterproof rubber ring 110 and the push plate 131 are tightly attached, and the spring piece 132 is squeezed so that the spring piece 132 is deformed. After the waterproof rubber ring 110 has been used for a long time, the spring piece 132 cooperates with the push plate 131 to push the waterproof rubber ring 110, so that the waterproof rubber ring 110 blocks the gap toward the inner cavity of the geomagnetic sensor body 100 to prevent water from flowing into the inner cavity of the geomagnetic sensor body 100. The water in the annular groove 130 can be discharged downward through the water hole 140.

[0036] The upper end of the geomagnetic sensor body 100 is provided with a sealing cover 200 for sealing the inner cavity of the geomagnetic sensor body 100. The upper end of the sealing cover 200 is provided with a buffering gasket 210 for buffering, so that when a vehicle passes through the upper end of the geomagnetic sensor body 100, the vibration of the geomagnetic sensor body 100 is reduced, and displacement between the geomagnetic sensor body 100 and the sealing cover 200 is avoided, and the waterproof rubber ring 110 is caused to wear. The lower end of the sealing cover 200 is provided with an annular groove 220 for cooperating with the annular groove 130 to limit the waterproof rubber ring 110. The annular groove 220 cooperates with the annular groove 130 to limit the waterproof rubber ring 110. The edge of the sealing cover 200 is provided with a screw hole 230 for limiting the screw rod 410. The screw rod 410 is rotated into the screw hole 230 to fix the geomagnetic sensor body 100 and the sealing cover 200.

[0037] A protective cover 300 for protecting the geomagnetic sensor body 100 is installed at the upper end of the sealing cover 200 , and a plurality of connecting rods 310 are installed at the lower end of the protective cover 300 . A limit block 311 is fixedly installed at the lower end of the connecting rod 310 , and two limit blocks 311 are provided.

[0038] A locking assembly 400 is installed on the edge of the geomagnetic sensor body 100 for locking the sealing cover 200 and the protective cover 300 in cooperation with the geomagnetic sensor body 100. The locking assembly 400 includes a screw rod 410, and the screw rod 410 includes a brick 411 for facilitating the rotation of the screw rod 410. A limiting hole three 412 for limiting the connecting rod 310 is provided at the upper end of the screw rod 410, a limiting groove one 413 is provided on one side of the groove cavity of the limiting hole three 412, and a limiting groove two 414 for the limiting block 311 to enter and exit is provided at the lower end of the groove cavity of the limiting groove one 413.

[0039] The screw rod 410 is rotated by the brick 411 so that the screw rod 410 is rotated to the inner cavity of the screw hole 230, and the geomagnetic sensor body 100 and the sealing cover 200 are fixed. The upper end of the screw rod 410 extends out of the hole cavity of the screw hole 230, which is convenient for limiting the protective cover 300. The protective cover 300 is placed on the upper end of the sealing cover 200. By rotating the protective cover 300, the limiting block 311 moves from the groove cavity of the limiting groove 2 414 to the hole cavity of the limiting hole 3 412, and the connecting rod 310 slides from the groove cavity of the limiting groove 1 413 to the hole cavity of the limiting hole 3 412 simultaneously.

[0040] A limiting plate 420 for limiting the limiting block 311 is installed in the cavity of the limiting hole 312, and a connecting pressure plate 421 for cooperating with the limiting block 311 to control the limiting plate 420 to move downward is fixedly installed at one end of the limiting plate 420, and the connecting pressure plate 421 is located outside the screw 410. After the screw 410 fixes the geomagnetic sensor body 100 and the sealing cover 200, the limiting plate 420 is moved downward. Installed into the groove of the limiting hole three 412, the limiting disk 420 is flipped 90 degrees so that the limiting disk 420 is in a vertical state. When the limiting disk 420 extends into the groove of the limiting hole three 412, it is flipped 90 degrees in the opposite direction so that the limiting disk 420 is horizontally located at the upper end of the spring 430. The spring 430 for pushing the limiting disk 420 is installed at the bottom of the groove of the limiting hole three 412, and the spring 430 is at the bottom of the limiting disk 420.

[0041] When the limit block 311 moves into the groove cavity of the limit hole three 412, the limit block 311 presses down the connecting pressure plate 421, so that the connecting rod 310 and the limit groove two 414 are in the same horizontal plane, and the connecting rod 310 slides from the groove cavity of the limit groove two 414 to the hole cavity of the limit hole three 412, and the limit plate 420 is pushed by the spring 430, and the limit plate 420 pushes the connecting rod 310, so that the limit block 311 moves upward, and the limit block 311 moves away from the limit groove two 414, thereby limiting the connecting rod 310 and limiting the protective cover 300 simultaneously.

[0042] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.

Claims

1. A vehicle geomagnetic sensor, comprising a geomagnetic sensor body (100) for detecting a vehicle, characterized in that: A sealing cover (200) for sealing the inner cavity of the geomagnetic sensor body (100) is installed at the upper end of the geomagnetic sensor body (100); A protective cover (300) for protecting the geomagnetic sensor body (100) is installed at the upper end of the sealing cover (200), and a locking assembly (400) for locking the sealing cover (200) and the protective cover (300) in cooperation with the geomagnetic sensor body (100) is installed at the edge of the geomagnetic sensor body (100); A plurality of connecting rods (310) are installed at the lower end of the protective cover (300); The locking assembly (400) comprises a screw rod (410), and a third limiting hole (412) for limiting the position of the connecting rod (310) is provided at the upper end of the screw rod (410).

2. A vehicle geomagnetic sensor according to claim 1, characterized in that: A waterproof rubber ring (110) is installed at the upper end of the geomagnetic sensor body (100), and a limiting hole (120) for limiting the locking assembly (400) is provided at the upper edge of the geomagnetic sensor body (100).

3. A vehicle geomagnetic sensor according to claim 2, characterized in that: An annular groove (130) for limiting the waterproof rubber ring (110) is provided at the upper end of the geomagnetic sensor body (100); a push plate (131) is installed in the groove cavity of the annular groove (130); and a spring (132) for cooperating with the push plate (131) to push the waterproof rubber ring (110) is installed at one end of the push plate (131).

4. A vehicle geomagnetic sensor according to claim 3, characterized in that: A plurality of water holes (140) for water circulation are provided at the lower end of the groove cavity of the annular groove one (130).

5. A vehicle geomagnetic sensor according to claim 4, characterized in that: A buffer gasket (210) for buffering is installed at the upper end of the sealing cover (200), an annular groove (220) for cooperating with the annular groove (130) to limit the waterproof rubber ring (110) is installed at the lower end of the sealing cover (200), and a screw hole (230) for limiting the screw rod (410) is provided on the edge of the sealing cover (200).

6. The vehicle geomagnetic sensor according to claim 1, characterized in that: A limit block (311) is installed at the lower end of the connecting rod (310), and two limit blocks (311) are provided.

7. The vehicle geomagnetic sensor according to claim 6, characterized in that: A limiting plate (420) for limiting the limiting block (311) is installed in the hole cavity of the limiting hole three (412); a connecting pressure plate (421) for cooperating with the limiting block (311) to control the limiting plate (420) to move downward is installed at one end of the limiting plate (420); a spring (430) for pushing the limiting plate (420) is installed at the bottom of the groove cavity of the limiting hole three (412), and the spring (430) is located at the bottom of the limiting plate (420).

8. The vehicle geomagnetic sensor according to claim 6, characterized in that: The screw rod (410) comprises a brick (411) for facilitating the rotation of the screw rod (410), a first limiting groove (413) is provided on one side of the groove cavity of the third limiting hole (412), and a second limiting groove (414) for allowing the limiting block (311) to enter and exit is provided at the lower end of the groove cavity of the first limiting groove (413).

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