CN212322398U - Photoelectric sensing type smoke and fire detection alarm - Google Patents

Abstract

The application relates to a photoelectric sensing smoke and fire detection alarm, which comprises a bottom shell and a fixed seat, wherein the bottom shell is rotationally connected with the fixed seat, the bottom shell is provided with a locking piece of which the state is switched in a circular motion mode, the fixed seat is provided with a clamping groove which is slidably connected with the locking piece and can be clamped with the locking piece, and the groove wall at one end of the clamping groove is sunken in a direction close to the groove wall of the clamping groove to form a gap part for the locking piece to enter and exit the clamping groove pair; when the locking piece moves to the position overlapped with the notch part, the locking piece is in an unlocking state; when the locking piece moves to the position clamped with the clamping groove, the locking piece is in a locking state. The user's accessible rotates the drain pan and makes the closure take place circular motion to switch the closure state and the unblock state of closure, simple swift. This application has the effect that improves dismouting efficiency.

Description

Photoelectric sensing type smoke and fire detection alarm

Technical Field

The application relates to the field of firework detection equipment, in particular to a photoelectric sensing type firework detection alarm.

Background

A smoke detector is a device for detecting a fire by detecting smoke, for monitoring whether a fire occurs in an environment, and issuing an alarm after the fire occurs.

In the related art, the chinese utility model with the authorized bulletin number of CN207440964U discloses a fire detection alarm device based on a photoelectric smoke sensor, which comprises a face shell and a bottom shell, wherein the bottom shell is provided with a circuit board and a smoke sensor. The smoke sensor comprises a supporting seat, a plurality of fence plates and grids, wherein the fence plates are arranged on the supporting seat in a circumferential distribution mode, and the grids are sleeved on the fence plates. The supporting seat is provided with an infrared emitting diode and an infrared receiving diode which are respectively electrically connected with the circuit board. The top of the face shell is provided with a top cover, the fence plate and the supporting seat can be enclosed to form a labyrinth cavity, and the infrared emitting diode and the infrared receiving diode respectively face the labyrinth to sense smoke in the labyrinth cavity. The bottom shell is also provided with a buzzer, and the buzzer is electrically connected with the circuit board. Before smoke does not enter the labyrinth cavity, the infrared receiving diode cannot receive the optical signal of the infrared emitting diode; after the smoke enters the labyrinth cavity, the emitted light is diffused due to the action of the smoke particle pair, and the infrared receiving diode receives the optical signal of the infrared emitting diode, so that the smoke detection is realized; when the smoke amount exceeds the threshold value, the buzzer gives an alarm.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the smoke detector is generally installed on a fixed object with a higher indoor height, such as a ceiling, and when a user installs the smoke detector, a matched base is generally installed on the fixed object, and then the bottom shell is installed on the base. Because this smoke and fire detector's battery compartment sets up in the one side that the base is close to the drain pan, when the user need change the battery on the smoke and fire detector, need dismantle the drain pan from the base, wait to change again after the battery and install. The base is fixed through the block with the drain pan is direct among the correlation technique, and the user is comparatively troublesome when carrying out the dismouting to the drain pan.

SUMMERY OF THE UTILITY MODEL

In order to improve user's dismouting efficiency, this application provides a photoelectric sensing formula firework detection alarm.

The application provides a photoelectric sensing formula firework detection alarm adopts following technical scheme:

a photoelectric sensing type smoke and fire detection alarm comprises a bottom shell and a fixed seat, wherein the bottom shell is rotatably connected with the fixed seat, the bottom shell is provided with a locking piece of which the state is switched in a circular motion mode, the fixed seat is provided with a clamping groove which is in sliding connection with the locking piece and can be clamped with the locking piece, and the groove wall at one end of the clamping groove is recessed in a direction close to the groove wall of the clamping groove to form a gap part for the locking piece to enter and exit the clamping groove pair; when the locking piece moves to a position coinciding with the notch part, the locking piece is in an unlocked state; when the locking piece moves to the position clamped with the clamping groove, the locking piece is in a locking state.

Through adopting above-mentioned technical scheme, when the user installed fireworks detection alarm, can pass through the screw with the fixing base and install on the fixture, with the closure in the breach portion injects, rotate the drain pan again and make the closure slide to the closure state. In the locking state, the locking piece is clamped with the fixing seat through the clamping groove, so that the bottom shell and the fixing seat are relatively fixed. When the user need dismantle, rotatable drain pan removes the closure to the position with breach portion coincidence, and the closure is in the unblock state this moment, then takes out the closure from breach portion again, accomplishes the dismantlement of drain pan. The user's accessible rotates the drain pan and makes the closure take place circular motion to switch the closure state and the unblock state of closure, it is simple swift, improved user's dismouting efficiency.

Preferably, the locking piece comprises a clamping block clamped with the clamping groove and a connecting column for driving the clamping block to move, one side of the connecting column is fixedly connected with the bottom shell, and the side, far away from the bottom shell, of the connecting column is fixedly connected with the clamping block; when the bottom shell rotates, the connecting column slides in the clamping groove.

By adopting the technical scheme, when the locking state is realized, the clamping block is abutted against the fixed seat so that the bottom shell cannot be separated from the fixed seat. When the drain pan rotated, the spliced pole removed in the inside in joint groove.

Preferably, the maximum thickness of fixing base is greater than the length of closure, the fixing base is kept away from the one side of drain pan is provided with the confession the groove of stepping down that the joint piece held, step down the groove with joint groove intercommunication, step down the groove and follow the extending direction in joint groove sets up, just step down the width in groove with breach portion phase-match.

Through adopting above-mentioned technical scheme, the joint piece can hold in the groove of stepping down, and when the spliced pole removed in the joint inslot, the joint piece removed in the groove of stepping down. The distance between the clamping block and the bottom shell is reduced through the mode of accommodating the clamping block in the abdicating groove, the clamping block is prevented from protruding the surface of the fixed seat far away from the bottom shell in the locking state, and the installation and fixation between the fixed seat and a fixture are influenced.

Preferably, the groove wall of the abdicating groove, which is far away from one end of the notch part, extends in the direction approaching the inside of the abdicating groove to form a positioning protrusion, and the side wall of the clamping block, which is close to the positioning protrusion, is recessed inwards to form a positioning groove; when the clamping block moves to the position where the positioning protrusion is clamped with the positioning groove, the clamping block is in a locking state.

By adopting the technical scheme, when the clamping block moves to one end of the abdicating groove far away from the notch part, the fixing seat deforms, so that the positioning protrusion enters the positioning groove and is clamped with the positioning groove, the clamping block is not easy to move under the condition of non-manual action, and the clamping block is switched from a locking state to a locking state in the process; when the user rotates the bottom shell reversely, the fixing seat is deformed, and the positioning protrusion is separated from the positioning groove. Under locking state, the location arch makes the joint piece remove under the non-manpower effect through the joint cooperation with the constant head tank, makes the drain pan after the installation is accomplished more stable.

Preferably, the positioning bulge is far away from two sides of one end of the abdicating groove and is provided with a guide surface which is an arc surface

By adopting the technical scheme, when the locking state is switched to the locking state, the positioning bulge is more easily deformed and enters the positioning groove along with the movement of the clamping block under the action of the guide surface when the positioning bulge abuts against the side wall of the clamping block; similarly, in the process of switching the locking state to the locking state, the positioning protrusions are easier to deform and separate from the positioning grooves along with the movement of the clamping blocks under the action of the guide surfaces.

Preferably, a transition surface is arranged between the notch part and the groove walls on the two sides of the clamping groove.

Through adopting above-mentioned technical scheme, the transition face can make the connection between breach portion and the joint groove more level and smooth, prevents that the spliced pole from getting into the joint groove from breach portion and being blocked.

Preferably, the connecting column is fixedly connected to the middle part of the clamping block.

Through adopting above-mentioned technical scheme, the one end that the drain pan was kept away from to the both sides protrusion from the spliced pole in the both sides of joint piece makes wholly be T shape between joint piece and the spliced pole, stability when increase joint piece is in locking state.

Preferably, the bottom shell is provided with a limiting groove for accommodating the fixing seat, and the fixing seat is connected with the limiting groove in a sliding manner.

Through adopting above-mentioned technical scheme, after the closure got into breach portion, the drain pan got into the spacing groove, and the spacing groove has limiting displacement to the rotation of drain pan, makes the rotation of casing more stable.

Preferably, the drain pan is close the one side of fixing base is provided with the battery compartment, the battery compartment is provided with the battery, the fixing base shelters from the battery compartment.

By adopting the technical scheme, when the battery compartment is in a locked state, the fixing seat shields the compartment opening of the battery compartment, so that the battery cannot be separated from the battery compartment. When the user need change the battery, can directly dismantle drain pan and fixing base to open the battery compartment and change the battery again, it is more swift.

Preferably, the number of the locking pieces is three, and the locking pieces are circumferentially distributed around the fixed seat.

Through adopting above-mentioned technical scheme, after fixing base and drain pan are installed on the fixture, the fixing base has the supporting role to the drain pan, and the drain pan is connected with the fixing base through each locking piece, and the whole area of contact between increase locking piece and the fixing base makes the drain pan more stable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the user can rotate the bottom shell to enable the locking piece to do circular motion, so that the locking state and the unlocking state of the locking piece are switched, the operation is simple and rapid, and the dismounting efficiency of the user is improved;

2. in a locking state, the positioning bulge and the positioning groove are in clamping fit to enable the clamping block to move under the non-manual action, so that the bottom shell after installation is more stable;

3. when the user need change the battery, can directly dismantle drain pan and fixing base to open the battery compartment and change the battery again, it is more swift.

Drawings

Fig. 1 is a schematic view of a photoelectric sensing type smoke detection alarm according to an embodiment of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a view in the direction of C in fig. 2.

Fig. 4 is a schematic structural diagram of the locking piece switching between the unlocking state, the locking state and the locking state.

Fig. 5 is a partially enlarged schematic view at a in fig. 3.

Fig. 6 is a partially enlarged schematic view at B in fig. 4.

Description of reference numerals: 1. a face shell; 11. a mounting cavity; 12. a sound emitting hole; 13. a smoke inlet; 2. a bottom case; 21. a main control board; 211. a wireless communication module; 22. a buzzer alarm; 23. a smoke sensor; 24. a battery compartment; 241. a battery; 242. a SIM card socket; 25. a limiting groove; 3. a fixed seat; 31. fixing grooves; 32. a clamping groove; 321. a notch portion; 3211. a transition surface; 322. an abutting portion; 33. a yielding groove; 331. positioning the projection; 3311. a guide surface; 4. a locking member; 41. a clamping block; 411. positioning a groove; 42. connecting columns.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses photoelectric sensing formula firework detection alarm. Referring to fig. 1 and 2, the smoke and fire detection alarm comprises a bottom shell 2, a face shell 1 which is matched with the bottom shell 2 to form an integral shell, and a fixed seat 3 which is detachably connected with the bottom shell 2. The fixed seat 3, the bottom shell 2 and the face shell 1 are all made of plastic materials. The face shell 1 is integrally disc-shaped, and the circumferential side face of the face shell 1 extends inward in an arc shape in a direction away from the bottom shell 2.

Referring to fig. 2 and 3, a mounting cavity 11 is formed in one surface of the face shell 1 close to the bottom shell 2, and a sound emitting hole 12 for allowing smoke to enter the mounting cavity 11 is formed in the other surface. The inner wall of the mounting cavity 11 close to one end of the bottom shell 2 is provided with a smoke inlet 13, and the smoke inlet 13 is communicated with the outer side of the face shell 1. The inner wall of the mounting cavity 11 is bolted with a buzzer alarm 22, and the position of the buzzer alarm 22 corresponds to the position of the sound emitting hole 12. The bottom shell 2 covers the cavity opening of the installation cavity 11 and is fixed with the face shell 1 in a clamping mode. A main control panel 21 is bolted to one side of the bottom shell 2 close to the mounting cavity 11. The main control panel 21 is provided with a chip, a peripheral circuit, a photoelectric smoke sensor 23 and a wireless communication module 211. The chip is connected with the photoelectric smoke sensor 23 and the wireless communication module 211 through a peripheral circuit, and the buzzer alarm 22 is electrically connected with the peripheral circuit through a lead. When the photoelectric smoke sensor 23 detects that the smoke value is greater than the threshold value, the buzzer 22 generates a sound alarm, and the wireless communication module 211 sends an alarm to the remote communication terminal through the wireless network. One side of the bottom shell 2 far away from the mounting cavity 11 is provided with a battery compartment 24 connected with the main control board 21, a battery 241 is arranged in the battery compartment 24, and when the bottom shell 2 and the fixing seat 3 are relatively fixed, the fixing seat 3 shields the battery compartment 24, so that the battery 241 is not easy to separate from the battery compartment 24. The inside of the battery compartment is provided with a SIM card socket 242, and a user can provide a wireless network for the wireless communication module to communicate after inserting the SIM card.

Referring to fig. 2 and 3, the fixing base 3 is disk-shaped as a whole and the diameter of the fixing base 3 is smaller than that of the bottom case 2. The surface of the fixing base 3 is provided with a plurality of fixing grooves 31 penetrating through the fixing base 3, each fixing groove 31 is circumferentially distributed around the fixing base 3, and a user can penetrate through the fixing grooves 31 and connect the screws to a fixed object such as a ceiling or a wall body in a threaded manner, so that the fixing base 3 and the fixed object are relatively fixed. After the fixing seat 3 is fixed, the bottom case 2 can be mounted on the fixing seat 3 by a user.

Referring to fig. 3 and 4, the bottom case 2 is provided with locking members 4 for being connected with the fixing base 3, the number of the locking members 4 is greater than or equal to two, and the locking members 4 are circumferentially distributed around the bottom case 2 at intervals. The locking piece 4 comprises an unlocking state, a locking state and a locking state; when the locking piece 4 is in an unlocking state, the bottom shell 2 and the fixed seat 3 are in a separable state; when the locking piece 4 is in a locking state, the locking piece 4 is clamped with the fixed seat 3 to enable the bottom shell 2 and the fixed seat 3 to be relatively fixed; when the locking piece 4 is in a locking state, the locking piece 4 and the fixed seat 3 are further strengthened and fixed. In order to improve the assembling and disassembling efficiency of the user, in the embodiment, the user can rotate the bottom case 2 to drive each locking member 4 to make a circular motion, and switch each state of the locking member 4. In the present embodiment, the number of the locking elements 4 is three, and in other embodiments, the number of the locking elements 4 can be customized by the manufacturer according to the actual quality of the bottom case 2.

Referring to fig. 5, each locking member 4 includes a clamping block 41 and a connecting column 42, the clamping block 41 is overall in a waist shape, the connecting column 42 is welded in the middle of the clamping block 41, one end of the connecting column 42 far away from the clamping block 41 is welded with the bottom case 2, and the clamping block 41 is fixedly connected with the bottom case 2. In this embodiment, the connecting column 42 is disposed in a direction perpendicular to the bottom case 2, and the clamping block 41 is parallel to the bottom case 2, so that the connecting column 42 and the clamping block 41 are integrally T-shaped.

Referring to fig. 5 and 6, three clamping grooves 32 are formed in one surface of the fixing base 3 close to the bottom case 2, each clamping groove 32 is arranged in an arc shape, and the circle center of each clamping groove 32 is consistent with that of the fixing base 3. The positions of the clamping grooves 32 correspond to the positions of the clamping blocks 41, and the width of the clamping grooves 32 is consistent with that of the connecting columns 42, so that the connecting columns 42 can slide in the clamping grooves 32. The groove walls on both sides of one end of the engaging groove 32 are recessed in a direction close to the groove wall of the engaging groove 32 to form a notch 321, and the shape of the notch 321 is matched with the shape of the engaging block 41, so that the engaging block 41 can be inserted into the notch 321 when moving to a position coinciding with the notch 321. Three abdicating grooves 33 are formed in one surface of the fixing base 3 away from the bottom shell 2, the positions of the abdicating grooves 33 correspond to the clamping grooves 32, the abdicating grooves 33 are distributed along the extending direction of the corresponding clamping grooves 32, and the width of the abdicating grooves 33 is matched with the notch portion 321, so that the clamping blocks 41 can slide in the abdicating grooves 33. The receding groove 33 is communicated with the clamping groove 32, so that two abutting parts 322 for the clamping blocks 41 to abut against are formed on two sides of the clamping groove 32.

Referring to fig. 5 and 6, when the user rotates the bottom case 2 to move the clamping block 41 to a position coinciding with the notch portion 321, the clamping block 41 and the connection post 42 are completely separated from the abutting portion 322, and at this time, the clamping block 41 is in an unlocked state, and the user can take out the clamping block 41 from the notch portion 321; when the user rotates the bottom case 2 to move the clamping block 41 to the middle of the abdicating groove 33, the clamping groove 32 forms a clamping fit with the clamping portion through the abutting portion 322, and at this time, the bottom case 2 is in a locking state and is relatively fixed to the fixing base 3. When the locking block 41 is switched between the unlocking state and the locking state, each connecting post 42 slides in the corresponding locking groove 32, and in order to prevent the connecting post 42 from being locked when entering the locking groove 32 from the notch portion 321, a transition surface 3211 is provided between the notch portion 321 and the groove walls on both sides of the locking groove 32.

Referring to fig. 5 and 6, in order to prevent the bottom case 2 from rotating without manpower after the locked state, the locking member 4 is moved to the notch 321, and a positioning protrusion 331 for engaging the engaging block 41 is disposed at an end of the relief groove 33 away from the notch 321. The positioning protrusion 331 is formed by extending both side groove walls of the relief groove 33 in a direction approaching the inside of the relief groove 33. Two sides of the positioning protrusion 331 away from one end of the slot wall of the avoiding slot 33 are provided with guiding surfaces 3311, and the two guiding surfaces 3311 extend inward in an arc shape in a direction away from the slot wall of the avoiding slot 33. The groove walls of the two sides of the clamping block 41 are recessed inwards to form a positioning groove 411, and the shape and the position of the positioning groove 411 are matched with the positioning protrusion 331.

Referring to fig. 5 and 6, when the user rotates the bottom case 2 to move the locking block 41 to the end of the receding groove 33 away from the notch 321, the positioning protrusion 331 and the positioning groove 411 form a locking fit, so that the locking block 41 is relatively fixed, and is in a locking state at this time, so as to limit the rotation of the bottom case 2 under the non-manual action. In the process of switching the locking state to the locking state, when the positioning protrusion 331 abuts against the sidewall of the clamping block 41, the positioning protrusion 331 is more easily deformed and enters the positioning slot 411 along with the movement of the clamping block 41 under the action of the guide surface 3311; similarly, in the process of switching the locking state to the locking state, the positioning protrusion 331 is more easily deformed and separated from the positioning slot 411 along with the movement of the clamping block 41 under the action of the guiding surface 3311.

Referring to fig. 3, in the present embodiment, a limiting groove 25 is formed on one surface of the bottom case 2 close to the fixing base 3, and an inner diameter of the limiting groove 25 is consistent with a diameter of the fixing base 3. When each clamping block 41 enters the receding groove 33, the fixing seat 3 enters the limiting groove 25. The limiting groove 25 has a limiting effect on the rotation of the bottom case 2, and improves the stability of a user when the bottom case 2 is rotated.

The implementation principle of the photoelectric sensing type smoke and fire detection alarm in the embodiment of the application is as follows: when the user installs the smoke and fire detection alarm, can pass through the screw mounting with fixing base 3 on the fixture, insert breach portion 321 in with closure 4, rotate drain pan 2 again and make closure 4 slide to the closure state, rotate again to the locking state. Under the locking state, the locking piece 4 is connected with the fixing base 3 through the clamping groove 32 and is not easy to loosen, so that the bottom shell 2 and the fixing base 3 are relatively fixed. When the user needs to dismantle, rotatable drain pan 2 removes locking member 4 to the position with breach portion 321 coincidence, and locking member 4 is in the unblock state this moment, then takes out locking member 4 from breach portion 321 again, accomplishes the dismantlement of drain pan 2, and then opens battery compartment 24 and change battery 241 again. The user's accessible rotates drain pan 2 and makes locking 4 take place circular motion to switch locking state and the unblock state of locking 4, it is simple swift, improved user's dismouting efficiency.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a photoelectric sensing formula firework detection alarm, includes drain pan (2) and fixing base (3), its characterized in that: the bottom shell (2) is rotatably connected with the fixed seat (3), the bottom shell (2) is provided with a locking piece (4) which is switched to be in a circular motion mode, the fixed seat (3) is provided with a clamping groove (32) which is slidably connected with the locking piece (4) and can be clamped with the locking piece (4), and the groove wall at one end of the clamping groove (32) is recessed in a direction close to the groove wall of the clamping groove (32) to form a gap part (321) for the locking piece (4) to pass in and out of the clamping groove (32); when the locking piece (4) moves to a position overlapping with the notch portion (321), the locking piece (4) is in an unlocked state; when the locking piece (4) moves to the position clamped with the clamping groove (32), the locking piece (4) is in a locking state.

2. The photoelectric smoke detection alarm of claim 1, wherein: the locking piece (4) comprises a clamping block (41) clamped with the clamping groove (32) and a connecting column (42) used for driving the clamping block (41) to move, one side of the connecting column (42) is fixedly connected with the bottom shell (2), and one side, far away from the bottom shell (2), of the connecting column (42) is fixedly connected with the clamping block (41); when the bottom shell (2) rotates, the connecting column (42) slides in the clamping groove (32).

3. The photoelectric smoke detection alarm of claim 2, wherein: the maximum thickness of fixing base (3) is greater than the length of closure (4), fixing base (3) are kept away from the one side of drain pan (2) is provided with the confession the groove of stepping down (33) that joint piece (41) held, step down groove (33) with joint groove (32) intercommunication, step down groove (33) and follow the extending direction setting of joint groove (32), just step down the width in groove (33) with breach portion (321) phase-match.

4. A photoelectric smoke detection alarm according to claim 3 wherein: the groove wall of one end, away from the notch part (321), of the abdicating groove (33) extends in the direction close to the inside of the abdicating groove (33) to form a positioning protrusion (331), and the side wall, close to the positioning protrusion (331), of the clamping block (41) is inwards recessed to form a positioning groove (411); when the clamping block (41) moves to the position where the positioning protrusion (331) is clamped with the positioning groove (411), the clamping block is in a locking state.

5. The photoelectric smoke detection alarm of claim 4, wherein: the locating protrusion (331) is far away from two sides of one end of the abdicating groove (33) are provided with guide surfaces (3311), and the guide surfaces (3311) are arc surfaces.

6. The photoelectric smoke detection alarm of claim 2, wherein: transition surfaces (3211) are arranged between the notch portion (321) and the groove walls on the two sides of the clamping groove (32).

7. The photoelectric smoke detection alarm of claim 4, wherein: the connecting column (42) is fixedly connected to the middle part of the clamping block (41).

8. The photoelectric smoke detection alarm of claim 1, wherein: the bottom shell (2) is provided with a limiting groove (25) for accommodating the fixing seat (3), and the fixing seat (3) is connected with the limiting groove (25) in a sliding mode.

9. The photoelectric smoke detection alarm of claim 1, wherein: bottom shell (2) are close the one side of fixing base (3) is provided with battery compartment (24), battery compartment (24) are provided with battery (241), fixing base (3) shelter from battery compartment (24).

10. The photoelectric smoke detection alarm of claim 1, wherein: the number of locking parts (4) is three, and each locking part (4) winds fixing base (3) are the circumference and distribute.

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