Smoke alarm

Abstract

The utility model discloses a smoke alarm, relates to the technical field of smoke alarm devices, and solves the problems that an existing warning lamp only has a single red light flickering function and cannot realize a bright warning effect after being blocked by dust deposition. According to the technical scheme, a buzzer and a warning lamp are arranged in a base, a smoke inlet grid mesh is arranged at one end of the base, a protection plate is rotationally arranged at one end of the base, the smoke inlet grid mesh is arranged on the side wall of the protection plate in a surrounding mode, an annular prism is arranged on the protection plate in a surrounding mode, and the annular prism is arranged at the front end of the warning lamp. According to the utility model, the annular prism is arranged at the front end of the warning lamp of the smoke alarm, so that when the smoke alarm is not used for a long time and dust is deposited at the position of the warning lamp, and a buzzer in the smoke alarm fails or is damaged in service life due to the fact that the buzzer does not work for a long time, part of deposited dust can be shaken off through rotation of the annular prism; the warning effect that only the function of the warning lamp is reserved is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of smoke alarm devices, in particular to a smoke alarm. Background Art

[0002] Smoke alarms are powered by the bus. Multiple smoke alarms can be connected to the bus to form an alarm system through networking and communication with the fire alarm controller. Some smoke alarms are usually equipped with buzzers, which can generate sounds when the alarm is triggered. Smoke alarms can collect smoke concentration signals in the environment where the smoke alarm is installed, and generate alarms in the early stages of a fire by judging the smoke concentration signals to prevent the occurrence of fire.

[0003] At present, smoke alarms can also sound an alarm through the flashing function of the warning light. However, since the warning light of the smoke alarm is exposed to the air for a long time, a large amount of dust or impurities such as spider webs may accumulate on the surface of the warning light. After the dust accumulates, a layer of deposition film will form on the warning light. The deposition film will block the light of the warning light and reduce the brightness of the indicator light. In addition, the usual warning light only has a single red flashing function. When blocked by the deposition film, the warning effect is further reduced. In particular, when the buzzer inside the smoke alarm fails or its life is damaged due to long-term non-operation, only the function of the warning light is retained, and the warning light does not play a warning role at this time, which will cause people to be unable to detect the occurrence of fire in time.

[0004] To this end, a smoke alarm is provided. Utility Model Content

[0005] The purpose of the utility model is to provide a smoke alarm, so as to overcome the defects that the existing warning light only has a single red light flashing function and cannot achieve a bright warning effect when the warning light is blocked by dust deposition. The specific technical solution is as follows:

[0006] A smoke alarm comprises a base, wherein a buzzer and a warning light are arranged inside the base, a smoke inlet grid is arranged at one end of the base, a protective plate is rotatably arranged at one end of the base, the smoke inlet grid is arranged around the side wall of the protective plate, an annular prism is arranged around the protective plate, and the annular prism is arranged at the front end of the warning light, and when the annular prism rotates, it can shake off the deposited dust and clearly reflect the light source generated by the warning light at multiple angles.

[0007] Preferably, the protective plate is a U-shaped structure, one end surface of the annular prism is rotatably mounted on the base, and a plurality of recessed areas are arranged on the other end surface of the annular prism.

[0008] Preferably, the annular prism is made of transparent glass or transparent plastic.

[0009] Preferably, a guide chamber is formed inside the protective plate, and the smoke inlet grille is connected to the guide chamber.

[0010] Preferably, a driving assembly is provided at the bottom of the protective plate, and the driving assembly includes a motor cover installed at the bottom of the protective plate, a driving motor is provided inside the motor cover, and the driving motor is used to drive the rotation of the protective plate.

[0011] Preferably, an inner ring gear is provided at the bottom of the protective plate, and a driving gear meshing with the inner ring gear is sleeved on the output shaft of the driving motor.

[0012] Preferably, a circular baffle is also connected to the output shaft of the driving motor, and the circular baffle is arranged on the inner bottom wall of the protective plate and located above the inner ring gear. The diameter of the circular baffle is larger than the diameter of the inner ring gear.

[0013] Compared with the existing technology, the utility model has the following beneficial effects:

[0014] 1. The utility model provides an annular prism at the front end of the warning light of the smoke alarm. When the smoke alarm is not used for a long time and dust is deposited on the warning light, and the buzzer inside the smoke alarm fails or its life is damaged due to long-term non-operation, the annular prism can be rotated to shake off part of the deposited dust, including breaking free from spider webs, thereby improving the warning effect of only retaining the warning light.

[0015] 2. The utility model provides a plurality of recessed areas on the annular prism, and forms a regular or irregular transition between the recessed areas and the other end plane of the annular prism. Therefore, when the annular prism rotates, it can realize multi-angle clear reflection of the light source generated by the warning light, thereby enhancing a more obvious warning effect, allowing personnel to more promptly perceive the working status of the smoke warning light, so that personnel can take corresponding emergency measures in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following will briefly introduce the drawings required for the description of the embodiment. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the smoke alarm of the utility model.

[0018] Figure 2 It is a schematic diagram of the overall front view structure of the smoke alarm of the utility model.

[0019] Figure 3It is a schematic diagram of the overall cross-sectional structure of the smoke alarm of the utility model.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the protective plate of the utility model.

[0021] Description of main reference numerals:

[0022] 1. Base; 2. Warning light; 3. Smoke inlet grille; 4. Protective plate; 5. Annular prism; 6. Recessed area; 7. Guide chamber; 8. Motor cover; 9. Drive motor; 10. Inner ring gear; 11. Drive gear; 12. Circular baffle. DETAILED DESCRIPTION

[0023] 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.

[0024] Next, the embodiments are described in detail to enable those skilled in the art to better understand the present invention:

[0025] A smoke alarm, such as Figures 1 to 4 As shown, it includes a base 1, a buzzer and a warning light 2 are arranged inside the base 1, a smoke inlet grid 3 is arranged at one end of the base 1, a protective plate 4 is rotatably arranged at one end of the base 1, the smoke inlet grid 3 is arranged around the side wall of the protective plate 4, a guide chamber 7 is formed inside the protective plate 4, and the smoke inlet grid 3 and the guide chamber 7 are connected to each other. When smoke spreads to the smoke alarm, the smoke enters the guide chamber 7 through the smoke inlet grid 3, and the guide chamber 7 guides the smoke into the corresponding sensing device inside the smoke alarm for detection. By integrally arranging the smoke inlet grid 3 and the guide chamber 7 on the protective plate 4, when the protective plate 4 rotates, the smoke can also be synchronously introduced into the guide chamber 7 in real time without being isolated due to the rotation of the protective plate 4.

[0026] A driving assembly is provided at the bottom of the protective plate 4, and the driving assembly includes a motor cover 8 installed at the bottom of the protective plate 4, and a driving motor 9 is provided inside the motor cover 8, and the driving motor 9 is used to drive the rotation of the protective plate 4. By providing an inner ring gear 10 at the bottom of the protective plate 4, and sleeved on the output shaft of the driving motor 9 is a driving gear 11 meshing with the inner ring gear 10, the protective plate 4 is meshed with the driving gear 11 through the inner ring gear 10, and the rotation of the driving motor 9 can realize the rotation of the protective plate 4.

[0027] Furthermore, a circular baffle 12 is connected to the output shaft of the driving motor 9, and the circular baffle 12 is arranged on the inner bottom wall of the protective plate 4 and is located above the inner ring gear 10. The diameter of the circular baffle 12 is larger than the diameter of the inner ring gear 10. The circular baffle 12 is used to prevent the protective plate 4 from jumping and being unstable when rotating, to prevent the inner ring gear 10 from being disengaged from the driving gear 11, and to ensure the smoothness of the rotation of the circular baffle 12.

[0028] The protective plate 4 is a U-shaped structure, and one end face of the annular prism 5 is rotatably mounted on the base 1. In order to improve the warning effect of the warning light 2 of the smoke alarm, an annular prism 5 is arranged around the protective plate 4, and the annular prism 5 is arranged at the front end of the warning light 2, which can not only prevent the warning light 2 from being blocked by dust, but also transfer the blocking effect of the dust to the annular prism 5. Therefore, when dust accumulates on the annular prism 5, part of the deposited dust can be shaken off by rotating the annular prism 5, including breaking free from spider webs, thereby further improving the flashing warning effect of the warning light 2.

[0029] At the same time, the annular prism 5 is made of transparent glass or transparent plastic, and a plurality of recessed areas 6 are arranged on the other end surface of the annular prism 5, and a regular or irregular transition is formed between the recessed areas 6 and the other end plane of the annular prism 5, so that when the annular prism 5 rotates, it can realize multi-angle clear reflection of the light source generated by the warning light 2. Furthermore, an irregular transition structure segment, i.e., a convexity, is arranged on the surface of the recessed area 6, so that when the annular prism 5 rotates, it can not only reflect at multiple angles and improve the flashing effect of the warning light 2, but also reflect the light source of natural light, thereby improving a more obvious warning effect, so that personnel can more promptly perceive the working status of the smoke warning light 2, so that personnel can promptly take corresponding emergency measures.

[0030] In summary, by providing an annular prism 5 at the front end of the warning light 2 of the smoke alarm, when the smoke alarm is not used for a long time and dust is deposited on the warning light 2, and when the buzzer inside the smoke alarm fails or its life is damaged due to long-term non-operation, the annular prism 5 can be rotated to shake off part of the deposited dust, including breaking free from spider webs, so as to improve the warning effect of only retaining the function of the warning light 2; at the same time, by providing multiple recessed areas 6 on the annular prism 5, a regular or irregular transition is formed between the recessed areas 6 and the other end plane of the annular prism 5, so that when the annular prism 5 is rotated, it can realize multi-angle clear reflection of the light source generated by the warning light 2, thereby improving a more obvious warning effect, so that personnel can be more timely aware of the working status of the smoke warning light 2, so that personnel can take corresponding emergency measures in time.

[0031] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A smoke alarm, comprising a base (1), wherein a buzzer and a warning light (2) are arranged inside the base (1), and a smoke inlet grille (3) is arranged at one end of the base (1), characterized in that: A protective plate (4) is rotatably provided at one end of the base (1); the smoke inlet grille (3) is disposed around the side wall of the protective plate (4); an annular prism (5) is disposed around the protective plate (4); and the annular prism (5) is disposed at the front end of the warning light (2); when the annular prism (5) rotates, it can shake off deposited dust and clearly reflect the light source generated by the warning light (2) at multiple angles.

2. A smoke alarm according to claim 1, characterized in that: The protective plate (4) is a U-shaped structure; one end surface of the annular prism (5) is rotatably mounted on the base (1); and a plurality of recessed areas (6) are provided on the other end surface of the annular prism (5).

3. A smoke alarm according to claim 2, characterized in that: The annular prism (5) is made of transparent glass material or transparent plastic material.

4. A smoke alarm according to claim 1, characterized in that: A guide chamber (7) is formed inside the protective plate (4), and the smoke inlet grille (3) and the guide chamber (7) are in communication with each other.

5. A smoke alarm according to claim 3, characterized in that: A driving assembly is arranged at the bottom of the protective plate (4), and the driving assembly comprises a motor cover (8) mounted at the bottom of the protective plate (4). A driving motor (9) is arranged inside the motor cover (8), and the driving motor (9) is used to drive the rotation of the protective plate (4).

6. A smoke alarm according to claim 5, characterized in that: An inner ring gear (10) is provided at the bottom of the protective plate (4), and a driving gear (11) meshing with the inner ring gear (10) is sleeved on the output shaft of the driving motor (9).

7. A smoke alarm according to claim 6, characterized in that: A circular baffle (12) is also connected to the output shaft of the driving motor (9). The circular baffle (12) is arranged on the inner bottom wall of the protective plate (4) and is located above the inner ring gear (10). The diameter of the circular baffle (12) is greater than the diameter of the inner ring gear (10).

Images