Smoke detector

Abstract

The smoke detector comprises a detector main body, the surface of the detector main body is provided with a housing, the inner wall of the housing is provided with a chute, the inner wall of the chute is clamped with a cover plate, the surface of the housing is provided with a mesh plate in a clearance manner, and the cover plate is provided with a plurality of scrubbing brushes close to the clearance of the mesh plate. The cover shell is arranged on the outer side of the detector body, the cover plate is arranged on the outer side of the cover shell, air on the outer side needs to be in contact with the detector body through the cover shell and the screen plate, when dust exists, the dust can be accumulated on the surface of the screen plate, and therefore the dust can be prevented from entering the detector body. The detector body is not in direct contact, the sensitivity of the detector body is prevented from being affected, the cover plate can be rotated when cleaning is needed, the cover plate drives the scrubbing brush to move along with the cover plate when moving, the scrubbing brush brushes the screen plate in the moving process, dust on the surface of the screen plate is removed, and operation is easy and fast.

Description

Technical Field

[0001] This utility model relates to the field of smoke and dust detection technology, and in particular to a smoke and dust detector. Background Technology

[0002] A smoke detector, also known as a smoke sensor or smoke alarm, is a device used to detect the concentration of smoke in the air and is widely used in homes, commercial buildings, and industrial environments.

[0003] Furthermore, the main purpose of smoke detectors is to prevent fires and other emergencies. They are usually placed in high positions such as the ceiling to ensure that smoke can come into contact with the smoke detector as soon as it appears. However, dust will accumulate on the surface of the smoke detector after being placed for a long time. This dust will make it difficult for the smoke detector to detect smoke in time when it actually appears, and it needs to be cleaned regularly. However, it is safe for operators to climb up to clean it. Disassembling and cleaning it is also difficult for operators to do. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to solve the problem that in the existing technology, dust will accumulate on the surface of the smoke detector during long-term placement, and the dust will block the smoke detector from detecting smoke normally.

[0005] To solve the problems of the prior art, the technical solution of this utility model is as follows: it includes a detector body, a cover is provided on the surface of the detector body, a sliding groove is opened on the inner wall of the cover, a cover plate is snapped into the inner wall of the sliding groove, a mesh plate is provided in the gap of the cover surface, a number of brushes are provided on the cover plate near the gap of the mesh plate, and a support rod connected to the end of each brush is provided. The support rods are spirally inclined and located between the cover plate and the brushes, and each support rod and the brushes form an inclined triangular shape on the surface of the cover plate.

[0006] Furthermore, the cover plate includes a connecting portion and a sealing portion, wherein the connecting portion is a protrusion that snaps into the sliding groove, and the sealing portion is a cover that extends to the outside of the housing, ensuring that the connection of the cover plate is stable and that the cover plate can completely cover the housing.

[0007] Furthermore, the brush has an arc-shaped plate structure with an arc angle adapted to the inner wall of the cover, and the surface of the brush is provided with bristles facing the inner wall of the mesh plate, and the bristles abut against the mesh plate to ensure that the bristles of the brush can be in close contact with the mesh plate.

[0008] Furthermore, the support rod is a plate-shaped structure made of tough plastic material, and a reinforcing structure is provided at the connection between the support rod and the cover plate. The support rod itself gradually twists along one side of the brush until it connects with the cover plate at a 45-degree angle, ensuring that the support rod can provide sufficient support for the brush.

[0009] Furthermore, a grooved gripper is provided on the side of the cover plate away from the detector body, and the grooved gripper is located at the center of the cover plate, providing a handhold for the operator so that the operator can directly rotate the cover plate.

[0010] Furthermore, the cover covers the detection end of the detector body, and there is a gap between the inner wall of the cover and the detection end, providing sufficient space for outside air to contact the detector body.

[0011] Furthermore, a rectangular through-slot is provided on the surface of the cover for mounting a mesh plate.

[0012] Furthermore, the length of the brush is greater than the length of the screen plate to ensure that the brush can fully contact the screen plate.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] This invention features a cover on the outside of the detector body, with a cover plate on the outside of the cover. Outside air needs to contact the detector body through the mesh plate of the cover. When there is dust, the dust will accumulate on the surface of the mesh plate and will not directly contact the detector body, thus avoiding affecting the sensitivity of the detector body. When cleaning is needed, the cover plate can be rotated. When the cover plate moves, it drives the brush to move with it. During the movement, the brush brushes the mesh plate, causing the dust on the surface of the mesh plate to fall off. The operation is simple and quick. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the casing of this utility model.

[0017] Figure 3 This is an exploded view of the overall structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the support rod of this utility model.

[0019] Reference numerals in the attached drawings: 1. Detector body; 2. Cover; 3. Slide groove; 4. Cover plate; 5. Mesh plate; 6. Brush; 7. Support rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figure 1-4As shown, a smoke detector includes a detector body 1. A cover 2 is provided on the surface of the detector body 1, covering the detection end of the detector body 1. A gap is left between the inner wall of the cover 2 and the detection end to provide sufficient space for outside air to contact the detector body 1. A sliding groove 3 is provided on the inner wall of the cover 2. A cover plate 4 is engaged with the inner wall of the sliding groove 3. The cover plate 4 includes a connecting part and a sealing part. The connecting part is a protrusion that engages with the sliding groove 3. The sealing part is a cover that extends to the outside of the cover 2 to ensure that the connection of the cover plate 4 is stable and that the cover plate 4 can completely cover the cover 2. A groove gripper is provided on the side of the cover plate 4 away from the detector body 1. The groove gripper is located at the center of the cover part of the cover plate 4, providing a handhold for the operator to directly rotate the cover plate 4.

[0022] A mesh plate 5 is provided in the gaps on the surface of the cover 2. A rectangular through-slot is formed on the surface of the cover 2 through which the mesh plate 5 is installed. Several brushes 6 are located near the gaps in the mesh plate 5 on the cover plate 4. The length of each brush 6 is greater than the length of the mesh plate 5 to ensure complete contact between the brushes 6 and the mesh plate 5. Each brush 6 has an arc-shaped plate structure, with the arc angle adapted to the inner wall of the cover 2. The surface of each brush 6 is provided with bristles facing the inner wall of the mesh plate 5, and the bristles abut against the mesh plate 5 to ensure that the bristles of the brush 6 can contact the mesh plate 5. The plates 5 are in close contact, and each brush 6 has a support rod 7 at its end that is connected to the cover plate 4. The support rod 7 is a plate-shaped structure made of tough plastic material. A reinforcing structure is provided at the connection between the support rod 7 and the cover plate 4. The support rod 7 gradually twists along one side of the brush 6 until it connects to the cover plate 4 at a 45-degree angle, ensuring that the support rod 7 can provide sufficient support for the brush 6. Several support rods 7 are located in a spiral inclined shape between the cover plate 4 and the brush 6, and each support rod 7 and the brush 6 form an inclined triangular shape on the surface of the cover plate 4.

[0023] Working principle description: First, the operator holds the groove gripper on the surface of the cover plate 4 and rotates the cover plate 4. The cover plate 4 can rotate along the slide groove 3. During the rotation, the cover plate 4 drives the brush 6 to move. During the movement, the brush 6 contacts the mesh plate 5 and brushes off the dust on the surface of the mesh plate 5. When the brush 6 encounters resistance, the support rod 7 provides support for the brush 6. When the brush 6 encounters greater resistance, it pushes the support rod 7 in the opposite direction. The tilted support rod 7 twists along the tilt direction to counteract the thrust of the brush 6. When the brush 6 passes through the resistance area, the support rod 7 returns to its original position and provides support again, ensuring that the brush 6 is always in close contact with the cover 2 and the mesh plate 5.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smoke and dust detector, comprising a detector body (1), characterized in that: The detector body (1) is provided with a cover (2) on its surface. The inner wall of the cover (2) is provided with a groove (3). A cover plate (4) is snapped into the inner wall of the groove (3). A mesh plate (5) is provided in the gap of the cover (2). There are several brushes (6) near the gap of the mesh plate (5) on the cover plate (4). Each brush (6) is provided with a support rod (7) connected to the cover plate (4) at its end. The several support rods (7) are spirally inclined between the cover plate (4) and the brushes (6). Each support rod (7) and the brushes (6) form an inclined triangular shape on the surface of the cover plate (4).

2. The smoke detector according to claim 1, characterized in that: The cover plate (4) includes a connecting part and a sealing part, wherein the connecting part is a protrusion that snaps into the groove (3), and the sealing part is a cover that extends to the outside of the cover (2).

3. The smoke detector according to claim 1, characterized in that: The brush (6) is an arc-shaped plate structure with an arc angle that matches the inner wall of the cover (2). The surface of the brush (6) is provided with bristles, which face the inner wall of the mesh plate (5) and abut against the mesh plate (5).

4. The smoke detector according to claim 1, characterized in that: The support rod (7) is a plate-shaped structure made of tough plastic material. A reinforcing structure is provided at the connection between the support rod (7) and the cover plate (4). The support rod (7) gradually twists along one side of the brush (6) until it connects with the cover plate (4) at a 45-degree angle.

5. The smoke and dust detector according to claim 2, characterized in that: The cover plate (4) is provided with a groove gripper on the side away from the detector body (1), and the groove gripper is located at the center of the cover part of the cover plate (4).

6. The smoke detector according to claim 1, characterized in that: The cover (2) covers the detection end of the detector body (1), and there is a gap between the inner wall of the cover (2) and the detection end.

7. The smoke detector according to claim 1, characterized in that: The surface of the cover (2) is provided with a rectangular through groove through which the mesh plate (5) is installed.

8. The smoke detector according to claim 7, characterized in that: The length of the brush (6) is greater than the length of the screen (5).

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