Smoke detector

Abstract

The utility model provides a smoke detector, and belongs to the technical field of smoke detectors. A smoke detector comprises a detector box and a detector base, an outer ring is fixed to the end face of the side, close to the detector base, of the detector box, an inner ring is fixed to the end face of the side, close to the detector box, of the detector base, and a locking assembly is installed between the outer ring and the inner ring; the locking assembly comprises a clamping shaft fixed on the inner wall of the outer ring and a magnetic plate in threaded connection with the inner wall of the inner ring, the magnetic plate rotates to drive the contact block to rotate to be separated from the storage battery, and the situation that after a main power source is damaged, the detector box is driven to be short-circuited, and then an alarm cannot be used is effectively avoided. And meanwhile, damage to a main power supply caused by short circuit of the alarm due to fire can be avoided, and the storage battery can store certain electric quantity and can continue to work after the detector box is disconnected from the power supply.

Description

Technical Field

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

[0002] Smoke detectors, also known as smoke-sensing fire detectors, smoke detectors, smoke probes, and smoke sensors, are fire detectors that respond to visible or invisible smoke particles. They are devices that convert changes in smoke concentration at the detection location into electrical signals to achieve an alarm purpose and are mainly used in fire protection systems.

[0003] Smoke detectors typically sound alarms in environments like fires, requiring a power supply to function continuously. If a fire is large enough to damage the main power supply, the detector may fail to issue an alarm. Furthermore, even when the main power supply is intact, the high temperature at a fire scene, coupled with the detector's continuous connection, can damage wiring and cause a short circuit, preventing the detector from issuing alarms. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a smoke detector.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a smoke detector, comprising a detector box and a detector base, characterized in that: an outer ring is fixed to one end face of the detector box near the detector base, an inner ring is fixed to one end face of the detector base near the detector box, and a locking assembly is installed between the outer ring and the inner ring.

[0006] The locking assembly includes a locking pin fixed to the inner wall of the outer ring, and a magnetic plate threaded to the inner wall of the inner ring. There are two locking pins, one of which is fixed with an electromagnet. The electromagnet is connected to a buzzer inside the detector box via a wire.

[0007] Optionally, the detector box is also equipped with a storage battery, and the side end face of the storage battery is provided with a secondary interface.

[0008] Optionally, a slot is provided on the side end face of the inner ring, the magnetic plate is threadedly connected to the inner ring near the detector base, and a baffle is fixed on the end face of the detector base, the baffle abutting against one side of the magnetic plate.

[0009] Optionally, the magnetic plate is a semi-circular ring with its notch on the same side as the slot on one side. A contact block is also fixed on the end face of the magnetic plate away from the detector base. The contact block is connected to the main wire, and the inner end face of the contact block is provided with a main interface.

[0010] In summary, this utility model has the following advantages compared with the prior art:

[0011] 1. Due to the locking mechanism, when a fire occurs, the alarm is activated, which simultaneously activates the electromagnet, causing the magnetic plate to rotate. The magnetic plate locks the pin, effectively preventing the alarm from falling due to vibrations during a fire, thus rendering it unable to sound an alarm.

[0012] 2. The rotation of the magnetic plate can also cause the contact block to rotate and disengage from the battery, effectively preventing the detector box from short-circuiting after the main power supply is damaged, thus rendering the alarm unusable. It can also prevent the main power supply from being damaged due to a short circuit caused by a fire. The battery can store a certain amount of electricity, allowing it to continue working after the detector box is disconnected from the power supply. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present invention.

[0014] Figure 2 This is a cross-sectional view of the present invention.

[0015] Figure 3 This is a perspective view of the detector box of this utility model.

[0016] Figure 4 This is a perspective view of the detector base of this utility model.

[0017] 10. Detector box; 11. Outer ring; 12. Detector base; 13. Inner ring; 14. Magnetic plate; 15. Baffle; 16. Snap-on shaft; 17. Battery; 18. Slot; 19. Contact block; 20. Electromagnet. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] As shown in Figures 1-4, a smoke detector includes a detector housing 10 and a detector base 12. The detector housing 10 has an outer ring 11 fixed to one end face near the detector base 12, and an inner ring 13 fixed to one end face near the detector housing 10. A locking assembly is installed between the outer ring 11 and the inner ring 13. A battery 17 is also installed on the detector housing 10. The side end face of the battery 17 has a secondary interface. The locking assembly includes a retaining pin 16 fixed to the inner wall of the outer ring 11 and a magnetic plate 14 threadedly connected to the inner wall of the inner ring 13. Two retaining pins 16 are provided, one of which has an electromagnet 20 fixed on it. The electromagnet 20 is connected to a buzzer inside the detector housing 10 via a wire.

[0020] A slot 18 is provided on the side end face of the inner ring 13. The magnetic plate 14 is threadedly connected to the inner ring 13 near the detector base 12. A baffle 15 is also fixed on the end face of the detector base 12. The baffle 15 abuts against one side of the magnetic plate 14. The magnetic plate 14 is a semi-arc ring. Its notch is located on the same side as the slot 18 on one side. A contact block 19 is also fixed on the end face of the magnetic plate 14 away from the detector base 12. The contact block 19 is connected to the main wire inside. The inner end face of the contact block 19 is provided with a main interface. After the main interface contacts the auxiliary interface of the battery 17, the battery 17 can be charged.

[0021] In use, first install the detector base 12 on a wall or other location, then fix the detector box 10 by installing the outer ring 11. Then, the outer ring 11 is secured by the retaining pin 16 in the slot 18 inside the inner ring 13. At this time, the main interface in the contact block 19 on the magnetic plate 14 contacts the secondary interface on the battery 17, which can charge the battery 17. When a fire occurs, the alarm in the detector box 10 is activated, which can simultaneously drive the electromagnet 20 to be energized. At this time, the electromagnet 20 can attract the magnetic plate 14 to rotate. The rotation of the magnetic plate 14 is set by a thread, which can move it closer to the detector box 10. Thus, the magnetic plate 14 presses the retaining pin 16, which can effectively prevent the alarm from falling due to vibration during a fire, thus preventing it from achieving the alarm effect.

[0022] The rotation of the magnetic plate 14 will also cause the contact block 19 to rotate and disengage from the battery 17, effectively preventing the detector box 10 from short-circuiting after the main power supply is damaged, thus rendering the alarm unusable. It can also prevent the main power supply from being damaged due to a short circuit caused by a fire. The battery 17 can store a certain amount of electricity, so it can continue to work after the detector box 10 is disconnected from the power supply.

[0023] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A smoke detector, comprising a detector housing (10) and a detector base (12), characterized in that: The detector box (10) has an outer ring (11) fixed on one end face near the detector base (12), and the detector base (12) has an inner ring (13) fixed on one end face near the detector box (10). A locking assembly is installed between the outer ring (11) and the inner ring (13). The locking assembly includes a retaining pin (16) fixed on the inner wall of the outer ring (11) and a magnetic plate (14) threadedly connected to the inner wall of the inner ring (13). There are two retaining pins (16), one of which is fixed with an electromagnet (20). The electromagnet (20) is connected to a buzzer inside the detector box (10) via a wire.

2. A smoke detector according to claim 1, characterized in that: The detector box (10) is also equipped with a storage battery (17), and the side end face of the storage battery (17) is provided with a secondary interface.

3. A smoke detector according to claim 1, characterized in that: The inner ring (13) has a slot (18) on its side end face. The magnetic plate (14) is threadedly connected to the inner ring (13) near the detector base (12). A baffle (15) is also fixed on the end face of the detector base (12). The baffle (15) abuts against one side of the magnetic plate (14).

4. A smoke detector according to claim 3, characterized in that: The magnetic plate (14) is a semi-circular ring with its notch on the same side as the slot (18) on one side. A contact block (19) is also fixed on the end face of the magnetic plate (14) away from the detector base (12). The contact block (19) is connected to the main wire inside, and the inner end face of the contact block (19) is provided with a main interface.

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