A dust cover for a human body microwave presence sensor

Abstract

This utility model relates to the field of sensor installation technology, specifically a dust cover for a human body microwave presence sensor. It includes a mounting plate and a housing. The front side of the mounting plate has several interlocking plates arranged in a star-shaped pattern. A fixing hole is provided at the center of each interlocking plate. A connecting bracket is inserted into the front side of the mounting plate. A through hole is formed on the front surface of the housing. A baffle, shaped like a frustum, is installed inside the housing, forming a pre-reserved cavity between the baffle and the housing. This dust cover for a human body microwave presence sensor uses a connecting bracket to fix the housing to the mounting plate, reducing obstruction of the front of the housing and simplifying disassembly. The sensor is installed inside the baffle, with its bottom secured in a limiting groove, minimizing contact between the sensor and the inner wall of the baffle. The overall arc shape of the baffle's interior reduces signal reflection interference and maintains the sensor's signal sensitivity.

Description

Technical Field

[0001] This utility model relates to the field of sensor installation technology, specifically a dust cover for a human body microwave presence sensor. Background Technology

[0002] Human microwave presence sensors are intelligent devices that detect the presence and activity of the human body by emitting electromagnetic waves and analyzing the echoes. Because they can penetrate non-metallic materials, they are widely used in smart homes and automation.

[0003] To avoid the effects of dust and rain on sensors during long-term use, sensor dust covers are usually installed. However, current sensor dust covers are difficult to remove and cannot drain rainwater that accumulates on top in a timely manner, causing problems such as dead zones in sensor detection.

[0004] To address the aforementioned issues, we have made improvements by proposing a dust cover for a human microwave presence sensor. Utility Model Content

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

[0006] This utility model provides a dust cover for a human microwave presence sensor, including a mounting plate and a housing. The front side of the mounting plate is provided with several card plates in a cross shape. The center of each card plate is provided with a fixing hole. A connecting bracket is inserted into the front side of the mounting plate.

[0007] The front surface of the housing has a through hole, and a baffle is installed inside the housing. The baffle is in the shape of a frustum and a reserved cavity is formed between the baffle and the housing.

[0008] As a preferred technical solution of this utility model, a plurality of the aforementioned cross-shaped mounting plates form a plurality of slots on the front side of the mounting plate, and the fixing hole is located at the center of the slot.

[0009] As a preferred embodiment of this utility model, a limiting groove is formed on the front surface of the card plate, and the distance between the limiting groove and the edge of the card slot is equal. A sensor is installed in the fixing hole.

[0010] As a preferred technical solution of this utility model, the mounting plate is provided with insertion holes at the four corners, the connecting frame is formed by cross-welding two frame bodies, the end of the connecting frame is inserted into the insertion hole, the insertion hole is threaded with a bolt, and the connecting frame is threadedly connected to the bolt.

[0011] In a preferred embodiment of this invention, the through hole is connected to the interior of the baffle, and a sensor is installed inside the baffle.

[0012] As a preferred embodiment of this utility model, the edge of the baffle is bonded to the inner surface of the shell.

[0013] As a preferred embodiment of this utility model, the surface of the shell is provided with several ventilation grooves.

[0014] Both the shell and the baffle are made of polypropylene.

[0015] The beneficial effects of this utility model are:

[0016] The dust cover of this human body microwave presence sensor is fixed to the mounting plate by a connecting bracket, which reduces obstruction to the front of the housing and reduces the difficulty of disassembly. The sensor is installed inside the baffle, and the bottom of the sensor is stuck inside the limiting groove, which reduces the contact between the sensor and the inner wall of the baffle. The inside of the baffle is curved, which can reduce signal reflection interference and maintain the sensitivity of the sensor signal.

[0017] The housing reduces the impact of external dust on the sensor. Rainwater seeps in through the venting grooves of the housing and flows through the reserved cavity. The curved baffle surface prevents rainwater from accumulating, and the moisture has a certain cleaning effect on the curved baffle surface, which can reduce the impact of external environmental factors such as dust and rainwater on the sensor signal. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the connecting frame structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the connecting frame installation structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the shell structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the shell of this utility model;

[0024] In the diagram: 1. Mounting plate; 2. Housing; 3. Connecting bracket; 4. Through hole; 5. Vent groove; 6. Bolt; 7. Clamping plate; 8. Limiting groove; 9. Fixing hole; 10. Insertion hole; 11. Baffle; 12. Reserved cavity; 13. Slot. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] Example: Figure 1-5 As shown, a dust cover for a human microwave presence sensor includes a mounting plate 1 and a housing 2. The front side of the mounting plate 1 is provided with several card plates 7 installed in a cross shape. The center of the card plates 7 is provided with a fixing hole 9. A connecting bracket 3 is inserted into the front side of the mounting plate 1.

[0027] A through hole 4 is provided on the front surface of the housing 2, and a baffle 11 is installed inside the housing 2. The baffle 11 is in the shape of a frustum, and a reserved cavity 12 is formed between the baffle 11 and the housing 2.

[0028] Several cross-shaped mounting plates 7 form several slots 13 on the front side of the mounting plate 1, and the fixing holes 9 are located at the center of the slots 13.

[0029] The front surface of the card plate 7 is provided with limiting grooves 8. The distance between the limiting grooves 8 and the edge of the card slot 13 is equal. A sensor is installed in the fixing hole 9. Installing the rear side of the sensor inside the fixing hole 9 can reduce the contact between the sensor body and the inner wall of the baffle 13, reduce the reflection interference of the inner wall of the baffle 13 on the sensor signal. The edge of the sensor is stuck inside the card slot 13, which improves the stability of the sensor installation. At the same time, since the card slot 13 and the fixing hole 9 are hollow, the influence on the sensor signal can be reduced.

[0030] The mounting plate 1 has four holes 10 at its four corners. The connecting frame 3 is formed by cross-welding two frames. The end of the connecting frame 3 is inserted into the hole 10. The hole 10 is threaded with a bolt 6. The connecting frame 3 is threaded with the bolt 6. After inserting the end of the connecting frame 3 into the hole 10, the bolt 6 is screwed in to install the connecting frame 3 stably. The cross-shaped connecting frame 3 can press the shell 2 towards the mounting plate 1, so that the shell 2 is stably connected to the mounting plate 1, while reducing the obstruction of the shell by the connecting frame 3.

[0031] The through hole 4 is connected to the inside of the baffle 11, and a sensor is installed inside the baffle 11.

[0032] The edge of the baffle 11 is bonded to the inner surface of the housing 2.

[0033] The surface of the housing 2 is provided with several ventilation grooves 5. After rainwater enters from the ventilation grooves 5 of the housing 2, it flows through the outer surface of the arc-shaped baffle 11, which not only avoids the rainwater accumulation from blocking the sensor signal, but also washes the surface of the housing 2 and reduces the dust on its surface.

[0034] Both the housing 2 and the baffle 11 are made of polypropylene, which has a high wave transmittance.

[0035] Working principle: The dust cover of this human body microwave presence sensor, when in use, installs the rear side of the sensor inside the fixing hole 9, which reduces the contact between the sensor body and the inner wall of the baffle 13, reducing the reflection interference of the inner wall of the baffle 13 on the sensor signal. The edge of the sensor is stuck inside the slot 13, improving the stability of the sensor installation. At the same time, since the slot 13 and the fixing hole 9 are hollow, the influence on the sensor signal can be reduced. After inserting the end of the connecting frame 3 into the insertion hole 10, the bolt 6 is screwed in to install the connecting frame 3 stably. The cross-shaped connecting frame 3 can squeeze the housing 2 towards the mounting plate 1, so that the housing 2 and the mounting plate 1 are stably connected, while reducing the obstruction of the housing by the connecting frame 3. Rainwater enters from the ventilation groove 5 of the housing 2 and flows through the outer surface of the arc-shaped baffle 11, which not only avoids the obstruction of the sensor signal by rainwater accumulation, but also washes the surface of the housing 2, reducing its surface dust.

[0036] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dust cover for a human microwave presence sensor, comprising a mounting plate (1) and a housing (2), characterized in that The front side of the mounting plate (1) is provided with several card plates (7) installed in a cross shape, and a fixing hole (9) is provided at the center of the card plate (7). A connecting bracket (3) is inserted into the front side of the mounting plate (1). The front surface of the housing (2) is provided with a through hole (4), and a baffle (11) is installed inside the housing (2). The baffle (11) is in the shape of a frustum, and a reserved cavity (12) is formed between the baffle (11) and the housing (2).

2. The dust cover for a human microwave presence sensor according to claim 1, characterized in that Several of the aforementioned cross-shaped mounting plates (7) form several slots (13) on the front side of the mounting plate (1), and the fixing holes (9) are located at the center of the slots (13).

3. A dust cover for a human microwave presence sensor according to claim 2, characterized in that The front surface of the card plate (7) is provided with a limiting groove (8), and the distance between the limiting groove (8) and the edge of the card slot (13) is equal. A sensor is installed in the fixing hole (9).

4. The dust cover for a human microwave presence sensor according to claim 1, wherein The mounting plate (1) has four holes (10) at its four corners. The connecting frame (3) is formed by welding two frames together. The end of the connecting frame (3) is inserted into the hole (10). The hole (10) is threaded with a bolt (6). The connecting frame (3) is threaded with the bolt (6).

5. The dust cover for a human microwave presence sensor according to claim 1, wherein The through hole (4) is connected to the inside of the baffle (11), and a sensor is installed inside the baffle (11).

6. The dust cover for a human microwave presence sensor according to claim 1, wherein The edge of the baffle (11) is bonded to the inner surface of the shell (2).

7. The dust cover for a human microwave presence sensor according to claim 1, wherein The surface of the housing (2) is provided with several ventilation grooves (5).

8. The dust cover for a human microwave presence sensor according to claim 1, wherein, Both the shell (2) and the baffle (11) are made of polypropylene.

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