A smoke detector

Abstract

The present application is suitable for security technology field, provide a kind of smoke detector, the smoke detector of the present application, by rotating the switch plate makes it along axial movement and press the switch, simultaneously by lock piece the movement track lock switch plate being set on guide smoke plate, make switch be in normally closed state, to make smoke detector be in power-on state.And when reverse rotation switch plate, release the lock state of switch plate, switch plate release switch, make switch be in normally open state, to make smoke detector be in power-off state.The smoke detector is cooperated by switch plate and lock piece the movement track being set on guide smoke plate, can realize manual power-on and power-off, can avoid the problem that existing smoke detector must be installed to power-on test, improve the installation efficiency of worker, reduce the risk of installation worker climbing operation.In addition, when multiple switches are provided on the smoke detector and need to be continuously pressed or long-pressed for testing, one-handed operation can be realized, and the testing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of security and defense technology, and particularly relates to a smoke detector. BACKGROUND

[0002] With the increase of the use of fire and electricity in modern public places and private places, the frequency of fire occurrence is higher and higher, and the harm of fire to society and the masses is also more and more serious. In order to reduce the harm, it is necessary to discover the fire in time. Since smoke is usually generated before the fire occurs, the fire smoke detector also emerges as the times require.

[0003] The fire smoke detector on the market uses a push switch to power on and power off the product structure, and does not have a self-locking structure. Only when the hand push switch structure is used can the power be turned on or the product can be powered on after being installed on the hanging plate; the customer will be very inconvenient when testing the product function, and when the product is provided with multiple switches, two hands need to be used to operate simultaneously, or when the product is complex, it is easy to make mistakes, such as when the product function needs to be tested by pressing different switches for multiple times, it is easy to make mistakes; resulting in repeated operation, increasing the operation difficulty of the installation personnel.

[0004] In addition, the function test and network verification of the fire smoke detector on the market can only be operated by installing the product on the ceiling, which causes low work efficiency and increases the operation difficulty of the installation personnel and the risk of climbing operation. SUMMARY

[0005] The embodiment of the present application provides a smoke detector, which aims to solve the problems that the existing smoke detector must be installed to be powered on and the installation test efficiency is low.

[0006] The embodiment of the present application is implemented in this way, which provides a smoke detector, the smoke detector comprising:

[0007] A housing, the housing having a receiving cavity inside;

[0008] A circuit board arranged in the receiving cavity;

[0009] A switch arranged on the circuit board;

[0010] A switch plate arranged above the switch; and

[0011] A smoke guide plate arranged above the circuit board and rotationally connected with the switch plate;

[0012] The smoke guide plate is provided with a locking piece for locking the switch plate in the axial direction;

[0013] The switch plate is rotated to move in the axial direction and press the switch, and the switch plate is locked by the movement track of the locking piece arranged on the smoke guide plate.

[0014] Further, the smoke guide plate is buckled and fixed on the circuit board.

[0015] Further, the smoke guide plate is provided with a limiting hole, the switch plate is provided with a rotating shaft, and the smoke guide plate and the switch plate are rotationally connected through the rotating shaft and the limiting hole.

[0016] Further, the locking member is an arc-shaped connecting part provided at the end of the limiting hole, when the rotating shaft rotates to the valley of the arc-shaped connecting part, the switch plate presses the switch and is locked in the axial direction; when the rotating shaft rotates to the peak of the arc-shaped connecting part, the switch plate releases the switch and is unlocked in the axial direction.

[0017] Further, the smoke guide plate is provided with a clamping groove, the switch plate is provided with an elastic connecting column, when the switch plate is rotated to press the switch, the elastic connecting column is clamped into the clamping groove.

[0018] Further, the rotating shaft is protruded outside the limiting hole, so as to prevent the switch plate from being pulled out of the smoke guide plate when being rotated.

[0019] Further, the switch plate is further provided with an elastic buckle fixedly connected with the smoke guide plate.

[0020] Further, the switch plate is further provided with a knob for rotating the switch plate.

[0021] Further, the smoke detector further comprises a mounting hanging plate.

[0022] The mounting hanging plate is provided with a blocking rib at a position corresponding to the switch plate, and the blocking rib is used to push the switch plate to rotate and make it in the unlocked state.

[0023] Further, the mounting hanging plate is provided with a protruding bone position at a position corresponding to the switch plate, and the protruding bone position is used to press the switch plate when the smoke detector is mounted to the mounting hanging plate.

[0024] The smoke detector of the embodiment of the present application is in the power-on state by rotating the switch plate to make it move along the axial direction and press the switch, locking the switch plate on the movement track of the smoke guide plate by the locking member, and making the switch in the normally closed state. When the switch plate is rotated reversely, the locking state of the switch plate is released, the switch plate releases the switch, and the switch is in the normally open state, so that the smoke detector is in the power-off state. The smoke detector can realize manual power-on and power-off by the cooperation of the switch plate and the locking member on the movement track of the smoke guide plate, can avoid the problem that the existing smoke detector must be installed to be powered on and tested, improves the installation efficiency of workers, and reduces the risk of high-altitude operation of installation workers. In addition, when multiple switches are provided on the smoke detector and need to be continuously pressed or long-pressed for testing, single-hand operation can be realized, and the testing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of the switch structure of the embodiment of the present application;

[0026] Figure 2 is Figure 1 is a sectional view along the A-A plane;

[0027] Figure 3 is Figure 1 is a sectional view along the B-B plane;

[0028] Figure 4 is a sectional view of the switch mechanism after power-on of the embodiment of the present application;

[0029] Figure 5 is another sectional view of the switch after power-on of the embodiment of the present application;

[0030] Figure 6 is a structural schematic view of the hanging plate of the embodiment of the present application;

[0031] Figure 7 is a schematic view of the installation structure of the hanging plate and the smoke detector of the embodiment of the present application;

[0032] Figure 8 is Figure 7 is a sectional view along the B-B plane;

[0033] Figure 9 is Figure 8 is a sectional view along the A-A plane.

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] 1, face shell; 2, bottom shell;

[0036] 10, circuit board; 20, switch; 30, switch plate; 31, knob; 32, rotating shaft; 40, smoke guide plate; 41, support plate; 42, connecting piece; 421, limiting hole; 422, arc-shaped connecting part; 50, elastic buckle; 60, hanging plate; 61, protruding bone position; 62, blocking rib. DETAILED DESCRIPTION

[0037] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0038] The present application provides a smoke detector, which is in the power-on state by rotating the switch plate to make it move along the axial direction and press the switch, and locking the switch plate on the movement track provided on the smoke guide plate by the locking piece, so that the switch is in the normally closed state. When the switch plate is rotated in the opposite direction, the locking state of the switch plate is released, the switch plate releases the switch, and the switch is in the normally open state, so that the smoke detector is in the power-off state. The smoke detector can realize manual power-on and power-off by the cooperation of the switch plate and the movement track provided on the smoke guide plate by the locking piece, which can avoid the problem that the existing smoke detector must be installed to test the power-on, improve the installation efficiency of workers, and reduce the risk of high-altitude operation of installation workers. In addition, when multiple switches are provided on the smoke detector and need to be continuously pressed or long-pressed for testing, single-handed operation can be realized, and the testing efficiency is improved.

[0039] As shown in Figures 1 to 4 The smoke detector provided by the present embodiment includes a housing, the housing has a receiving cavity inside, a circuit board 10 arranged in the receiving cavity, a switch 20 arranged on the circuit board 10, a switch plate 30 arranged above the switch 20, and a smoke guide plate 40 arranged above the circuit board 10 and rotationally connected with the switch plate 30, and the smoke guide plate 40 is provided with a locking piece for locking the switch plate 30 in the axial direction. Rotating the switch plate to make it move along the axial direction and press the switch, and locking the switch plate 30 on the movement track provided on the smoke guide plate 40 by the locking piece.

[0040] In the present embodiment, the smoke detector includes a bottom shell 2, a face shell 1, and a receiving cavity formed by buckling the bottom shell 2 and the face shell 1, and the receiving cavity is provided with a circuit board 10, the circuit board 10 is welded with a switch 20, the switch 20 is a press switch and is provided with a spring below, and the switch is in a normally open state. A switch plate 30 is arranged above the switch 20, and the switch 20 is pressed by pressing the switch plate 30, so that the switch is in a normally closed state.

[0041] In this embodiment of the invention, the smoke guide plate 40 is fixed to the circuit board 10. The switch plate 30 is rotatably connected to the smoke guide plate, and the smoke guide plate 40 is provided with a locking member. The switch 20 is in the normally open state. By rotating the switch plate 30, the switch plate 30 rotates along the movement trajectory of the locking member on the smoke guide plate 40, causing the switch plate 30 to move axially downward on the smoke guide plate 40. The switch 20 is pressed down by the switch plate 30. At this time, the switch plate 30 is axially locked by the movement trajectory of the locking member on the smoke guide plate 40, and the switch 20 is in the normally closed state, thereby realizing the power-on of the smoke detector.

[0042] In addition, the switch plate 30 is rotated in the opposite direction, causing it to rotate in the opposite direction along the movement trajectory of the locking member on the smoke guide plate 40. This causes the switch plate 30 to move upward along the axial direction and release the switch 20. At this time, the locking member unlocks the switch plate 30 in the axial direction, and the switch 20 is reset under the action of the built-in spring. The switch 20 returns to the normally open state, thereby realizing the power-off of the smoke detector.

[0043] In this embodiment, the locking element has different movement trajectories on the smoke guide plate 40. Specifically, the movement trajectory of the locking element 30 on the smoke guide plate 40 is arc-shaped. When the switch plate 30 rotates to the trough of the arc-shaped movement trajectory of the locking element, the switch 20 is pressed down by the switch plate 30. When the switch plate 30 rotates to the peak of the arc-shaped movement trajectory of the locking element, the switch 20 returns to the normally open state. In other embodiments, the movement trajectory can be other triangles or trapezoids, etc., as long as the switch plate 30 is locked in the axial direction.

[0044] This embodiment enables manual power-on and power-off of the smoke detector by coordinating the movement trajectory of the switch plate 30 and the locking component on the smoke guide plate 40. This avoids the problem of the smoke detector requiring installation before power-on testing and the need to press buttons during testing, improving installation efficiency and reducing the risk of workers working at heights. Furthermore, when the smoke detector has multiple switches requiring continuous or prolonged pressing for testing, single-handed operation can be achieved, further improving testing efficiency. This solves the problem of existing smoke detectors requiring manual button pressing for power-on or installation on a mounting plate before power-on testing.

[0045] Furthermore, the smoke guide plate 40 is provided with a limiting hole 421, and the switch plate 30 is provided with a rotating shaft 32. The smoke guide plate 40 and the switch plate 30 are rotatably connected to the limiting hole 421 through the rotating shaft 32.

[0046] In this embodiment of the invention, the smoke guide plate 40 includes: a support plate 41 fixed on the circuit board 10, and a connector 42 disposed on the support plate 41, wherein the switch plate 30 is rotatably connected to the connector 42.

[0047] The connecting piece 42 is a protrusion arranged at the bottom of the support plate 41, and the protrusion is provided with a limiting hole 421 communicating with the support plate 41. The switch plate 30 is provided with a rotating shaft 32, and the connecting piece 42 and the switch plate 30 are rotationally connected through the rotating shaft 32 and the limiting hole 421.

[0048] With reference to Figure 2 and Figure 3 In the embodiment of the present application, the locking piece is an arc-shaped connecting part 422 arranged at the end of the limiting hole 421. Specifically, the bottom end face of the limiting hole 421 is provided with two oppositely arranged arc-shaped connecting parts 422, and the arc-shaped connecting part 422 is the moving track of the rotating shaft 32 on the smoke guide plate 40. When the rotating shaft 32 rotates to the valley bottom of the arc-shaped connecting part 422, the switch plate 30 moves downward along the axial direction and presses the switch 20, and the arc-shaped connecting part 422 locks the switch plate 30 in the axial direction. When the rotating shaft 32 rotates to the valley peak of the arc-shaped connecting part 422, the switch plate 30 moves upward along the axial direction and releases the switch 20, and the arc-shaped connecting part 422 unlocks the switch plate 30 in the axial direction.

[0049] In the embodiment of the present application, initially, the rotating shaft 32 is at the valley peak of the arc-shaped connecting part 422, and at this time, the switch plate 30 is in the unlocked state. The switch 20 is in the normally open state.

[0050] With reference to Figure 4 and Figure 5 When the rotating shaft 32 rotates to the valley bottom of the arc-shaped connecting part 422, the switch 20 is pressed, and the smoke guide plate 40 is fixed, so that the smoke guide plate 40 locks the switch plate 30 in the axial direction through the arc-shaped connecting part 422, so that the switch 20 is in the normally closed state, thereby realizing the power-on of the product.

[0051] When the rotating shaft 32 reversely rotates to the valley peak of the arc-shaped connecting part 422, the switch plate 30 releases the switch 20, the arc-shaped connecting part 422 unlocks the switch plate 30 in the axial direction, the switch 20 is reset under the action of the built-in spring, and the switch 20 returns to the normally open state, thereby realizing the power-off of the product.

[0052] In the embodiment, by arranging the arc-shaped connecting part 422 on the end face of the limiting hole 421, when the switch plate 30 rotates, the moving track of the switch plate 30 on the arc-shaped connecting part 422 is changed, so that the switch plate 30 presses or releases the switch 20 in the axial direction, and the switch 20 is in the normally closed or normally open state, thereby realizing the manual power-on and power-off of the product.

[0053] Further, the smoke guide plate 40 is provided with a clamping groove, and the switch plate 30 is provided with an elastic connecting column. When the switch plate 30 is rotated to press the switch 20, the elastic connecting column is clamped into the clamping groove.

[0054] As an embodiment of the present application, the locking member is a clamping groove on the connecting member 42. The switch plate 30 is provided with an elastic connecting column. When the switch plate 30 is rotated to press the switch 20, the elastic connecting column is clamped into the clamping groove, thereby locking the switch plate 30. At this time, the switch 20 is pressed by the switch plate 30, and the switch 20 is in a normally closed state, thereby realizing the power-on of the smoke detector.

[0055] Correspondingly, when the switch plate 30 is rotated reversely, the connecting column is released from the clamping groove, thereby unlocking the switch plate 30. The switch plate 30 releases the switch 20, and the switch 20 is reset under the action of the internal spring, thereby returning to a normally open state, thereby realizing the power-off of the smoke detector.

[0056] As an embodiment of the present application, the rotating shaft 32 is protruded outside the limiting hole, thereby preventing the switch plate 30 from being released from the guide smoke plate 40 during rotation.

[0057] As an embodiment of the present application, the rotating shaft 32 is two opposite cylindrical pins arranged on the bottom of the switch plate 30. The cylindrical pins can rotate on the arc-shaped connecting part 422 of the limiting hole. When the cylindrical pins are rotated to the peak of the arc-shaped connecting part 422, the switch 20 is released, and the switch 20 is in a normally open state. When the cylindrical pins are rotated to the valley of the arc-shaped connecting part 422, the switch 20 is pressed, and the cylindrical pins are locked in the axial direction, thereby pressing the switch 20 and making the switch 20 in a normally closed state.

[0058] As an embodiment of the present application, the switch plate 30 is provided with a knob 31 for rotation, thereby facilitating the user operation. The switch plate 30 is rotated, thereby moving the switch plate 30 in the axial direction, further pressing or releasing the switch 20, and making the switch 20 in a normally closed or normally open state.

[0059] As an embodiment of the present application, the switch plate 30 is further provided with an elastic buckle 50 fixedly connected with the guide smoke plate 40.

[0060] The bottom of the switch plate 30 is rotationally connected with the limiting hole through the rotating shaft 32, and the upper part of the switch plate 30 is fixed on the support plate 41 through the elastic buckle 50, thereby preventing the switch plate 30 from being loosened.

[0061] When the smoke detector needs to be tested, the switch plate 30 is rotated to the power-on state through the knob 31, the switch plate 30 is locked in the axial direction by the locking member, thereby making the smoke detector in a power-on state all the time, and manual pressing is not needed. When in a power-off state, the switch plate 30 is reversely rotated, the locking of the switch plate 30 by the locking member is released, the switch plate 30 releases the switch 20, and the switch 20 is in a normally open state, thereby realizing the power-off of the smoke detector.

[0062] Reference Figures 6 to 9In the embodiment of the present application, the smoke detector further comprises a mounting plate 60, and a blocking rib 62 is arranged on the mounting plate 60 at a position corresponding to the knob 31, and used for pushing the switch plate 30 to rotate to the normally open state.

[0063] In the embodiment of the present application, when the smoke detector is installed, the mounting plate 60 is first installed on a wall surface, a panel or other mounting surface, and the mounting plate 60 is fixed to the mounting surface through a bolt assembly. Then, the smoke detector is installed on the mounting plate 60. Specifically, the smoke detector is installed on the mounting plate 60 by rotating and buckling.

[0064] As an embodiment of the present application, when the smoke detector is installed, for example, in the powered-on state, and the switch plate 30 is in the locked state, when the switch plate 30 is installed on the mounting plate 60, the blocking rib 62 pushes the knob 31 to rotate, so that the switch plate 30 is rotated to the unlocked state. In this embodiment, the blocking rib is used to push the knob to make the switch plate in the unlocked state during installation, so that the smoke detector is in the powered-off state during disassembly.

[0065] As an embodiment of the present application, the mounting plate 60 is provided with a protruding bone position 61 corresponding to the switch plate 30, which is used to press the switch plate 30 when the smoke detector is installed, so that the switch 20 is in the normally closed state during installation, so that the smoke detector is in the powered-on state during installation.

[0066] In the embodiment of the present application, the smoke detector is buckled and connected with the mounting plate 60, and when the product is installed, for example, when the smoke detector is in the powered-on state, the knob 31 is first rotated to the unlocked state by the blocking rib 62 during installation, so that the switch plate 30 releases the switch 20, and ensures that the smoke detector is in the powered-off state during disassembly. Then, the protruding bone position 61 on the mounting plate 60 presses the switch plate 30, and further presses the switch 20 by the switch plate 30, so that the switch 20 is in the normally closed state, so that the smoke detector is in the powered-on state during installation, and the user's hands are free, and other operations can be performed during installation or testing.

[0067] In the embodiment of the present application, the protruding bone position 61 is used to press the switch plate 30 during installation of the smoke detector, and further press the switch 20, so that the switch 20 is in the normally closed state, so that the smoke detector is in the powered-on state during installation, and ensures normal operation, and prevents the installed smoke detector from not being powered on due to installation personnel's operation error, so that the smoke detector cannot work normally, and cannot issue a pre-warning when a fire occurs; and the user does not need to press by hand during testing or network verification. In addition, the blocking rib is arranged on the mounting plate, so that the knob is rotated to the normally open state by the blocking rib during installation of the smoke detector, and the smoke detector is in the powered-off state during disassembly.

[0068] When the smoke detector is disassembled, the smoke detector is separated from the mounting plate 60, and the power-on switch 20 is automatically powered off. The automatic power-off of the power-on switch 20 when the smoke detector is disassembled has the following beneficial effects: when the smoke detector is removed from the ceiling, if the product is connected to the monitoring system, the system will display an abnormal state, and the manager can confirm whether the abnormal product is maintained or stolen; when the product misreports, after the mute button is ineffective, the product can be automatically powered off when disassembled, effectively reducing customer annoyance; when the product is disassembled during maintenance, home decoration, etc., automatic power-off can save battery power and prolong the service life of the product. It can also prevent installers from placing disassembled products in inappropriate installation locations or environments due to lack of knowledge about the product, causing false alarms.

[0069] The smoke detector of the present application can realize manual power-on, power-off, automatic power-on during installation, and automatic power-off when disassembled through the cooperation of the switch plate 30 and the smoke guide plate 40. It can avoid the problem that existing smoke detectors must be installed before they can be powered on for testing, improving the installation efficiency of workers. This function reduces the risk of high-altitude work for installers. Automatic power-on during installation ensures that the product can reliably operate in a normal state. Automatic power-off after disassembly can prevent the smoke detector from being placed in a non-standard location and triggering false alarms. It solves the problem of false alarms caused by non-standard operation during installation of existing smoke detectors, as well as the problem of low work efficiency of installers during testing.

[0070] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A smoke detector, characterized in that, The smoke detector includes: A housing having a receiving cavity inside; Circuit board disposed within the receiving cavity; The switch is located on the circuit board; A switch plate located above the switch; and A smoke guide plate is disposed above the circuit board and rotatably connected to the switch plate; The smoke guide plate is provided with a locking element for axially locking the switch plate; Rotate the switch plate to move it axially and press the switch; the switch plate is locked by the movement trajectory of the locking member on the smoke guide plate. The smoke detector also includes a mounting plate, on which a baffle is provided at a position corresponding to the switch plate. The baffle is used to push the switch plate to rotate so that it is in the unlocked state.

2. The smoke detector as described in claim 1, characterized in that, The smoke guide plate is fastened and fixed to the circuit board.

3. The smoke detector as described in claim 1, characterized in that, The smoke guide plate is provided with a limiting hole, and the switch plate is provided with a rotating shaft. The smoke guide plate and the switch plate are rotatably connected to the limiting hole through the rotating shaft.

4. The smoke detector as described in claim 3, characterized in that, The locking element is an arc-shaped connecting part located at the end of the limiting hole. When the rotating shaft rotates to the bottom of the arc-shaped connecting part, the switch plate presses the switch and locks it in the axial direction. When the rotating shaft rotates to the peak of the arc-shaped connecting part, the switch plate releases the switch and unlocks it in the axial direction.

5. The smoke detector as described in claim 3, characterized in that, The smoke guide plate is provided with a slot, and the switch plate is provided with an elastic connecting post. When the switch plate is rotated and the switch is pressed, the elastic connecting post is engaged in the slot.

6. The smoke detector as described in claim 3, characterized in that, The rotating shaft protrudes outside the limiting hole to prevent the switch plate from dislodging from the smoke guide plate when rotating.

7. The smoke detector as described in claim 1, characterized in that, The switch plate is also provided with an elastic buckle that is fixedly connected to the smoke guide plate.

8. The smoke detector as claimed in claim 1, characterized in that, The switch plate is also provided with a toggle switch for rotating the switch plate.

9. The smoke detector as described in claim 1, characterized in that, The mounting plate has a protruding rib at a position corresponding to the switch plate. The protruding rib is used to press the switch plate when the smoke detector is installed on the mounting plate.

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