EP3640904A1 - Miniaturrauchmelder - Google Patents

Miniaturrauchmelder Download PDF

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Publication number
EP3640904A1
EP3640904A1 EP17885444.4A EP17885444A EP3640904A1 EP 3640904 A1 EP3640904 A1 EP 3640904A1 EP 17885444 A EP17885444 A EP 17885444A EP 3640904 A1 EP3640904 A1 EP 3640904A1
Authority
EP
European Patent Office
Prior art keywords
cover body
base
disposed
smoke detector
block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17885444.4A
Other languages
English (en)
French (fr)
Other versions
EP3640904B1 (de
EP3640904A4 (de
Inventor
Yunbiao LIU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Primetech Electronics Co Ltd
Original Assignee
Suzhou Primetech Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Primetech Electronics Co Ltd filed Critical Suzhou Primetech Electronics Co Ltd
Publication of EP3640904A1 publication Critical patent/EP3640904A1/de
Publication of EP3640904A4 publication Critical patent/EP3640904A4/de
Application granted granted Critical
Publication of EP3640904B1 publication Critical patent/EP3640904B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/12—Checking intermittently signalling or alarm systems

Definitions

  • the present invention relates to a smoke detector, and in particular, to a micro smoke detector.
  • the principle of a smoke detector is that: an alarm unit in the smoke detector detects smoke, and the smoke detector can make an internal buzzer make a sound, so as to warn a user.
  • One of the main problems regarding the smoke detector in this field is that the volume of the smoke detector is large.
  • a smoke detection chamber in the smoke detector is designed to have a relatively large volume. Therefore, the known smoke detectors are not popular in most families due to relatively large sizes thereof, and their designs are seldom added to home decoration schemes.
  • CN102754136A discloses a smoke detector, in which the size of a smoke detection chamber is adjusted by changing a fin structure of a detection apparatus, so as to design a small-sized smoke detector.
  • a button (see reference sign 21 in fig. 6 of the foregoing invention patent) of this type of smoke detector is disposed on a side surface of a housing, and the small-sized smoke detector is set to have a small enough volume.
  • the smoke detector is disposed on a ceiling three meters above the floor, and when the smoke detector is stopped or tested, a relatively small button needs to be pressed from a side surface, and the use is extremely inconvenient.
  • a micro smoke detector includes a base and a cover body axially moving along the base, wherein the cover body is provided therein with a detection part for detecting smoke concentration, a sound production part for generating sound waves, and a control circuit board for controlling the detection part and the sound production part; a side wall of the cover body is provided with a smoke inlet hole for smoke to enter the detection part; an elastic part that drives the cover body away from the base by means of an elastic effect is disposed between the cover body and the base; a limiting part that limits, by means of an abutting effect, the cover body from breaking away from the base is disposed between the cover body and the base; a surface, facing towards the base, of the control circuit board is provided with a first button triggered by movement of the cover body to the base; the first
  • this type of micro smoke detector when this type of micro smoke detector is mounted to a top inside a house, a user presses the cover body on the top, to make the cover body move towards the base; the first button on the control circuit board is triggered by the base, and the user can stop chirping of the smoke detector and test the smoke detector in this manner.
  • the smoke detector set in this manner is relatively small, and in the manner of trigging by using the cover body, the area of the cover body occupies more than 90% of the area of an orthographic projection of a base, and the smoke detector can be triggered provided that the cover body is pressed.
  • the cover body is made, by using the elastic part between the base and the cover body, away from the location where the first button is triggered.
  • the base includes a mounting plate and a tubular part connected to the mounting plate; a bottom of the tubular part is provided with a partition board; the partition board is recessed along an axial direction of the tubular part to form a battery cavity for accommodating a battery, and a top of the tubular part is provided with an opening for movement of the cover body.
  • the battery is mounted into the base by using the battery cavity formed by the partition board, to reduce an occupied space.
  • the tubular part implements two functions: first, the height of the tubular part is a location where battery accommodation is provided; because the battery needs to meet a life span of 5 to 10 years of the smoke detector, the battery has a relatively large volume, and this limits the size of the micro smoke detector to some extent; and second, the cover body is mounted to the tubular part by using the opening, and the height of the tubular part also needs to meet a downward stroke of the cover body.
  • the elastic part includes a shaping hole disposed on an outer side wall of the battery cavity and an elastic piece that obliquely extends towards the opening along the side wall of the shaping hole.
  • the elastic piece is obliquely disposed towards the opening, so that the cover body is reset by using elastic restoring force of itself. Moreover, because the elastic piece is formed by the side wall of the shaping hole, the problem of stress concentration between the elastic piece and the battery cavity side wall is reduced, and the shaping holes facilitates drafting by the elastic piece, and the injection molding difficulty is also reduced.
  • At least two shaping holes are disposed in a radial direction of the tubular part, and projections of adjacent elastic pieces in a vertical direction are staggered.
  • the elastic pieces that are disposed in a staggered manner implement a function of balanced outward pushing on the control circuit board by means of elastic deformation, thereby avoiding excessively large force application to a single point on the control circuit board.
  • the limiting part includes a first limiting block disposed on the cover body, and a second limiting block that is disposed on an inner wall of the tubular part and that is located in a movement direction of the first limiting block.
  • a switch button that controls switch-on and switch-off of a power supply is disposed between the base and the tubular part.
  • the switch button controls startup of the power supply, to prevent the smoke detector from wasting electric energy in the transportation or storage process, to improve the life span of the smoke detector, and also prevent the smoke detector from erroneously making a sound.
  • the partition board is recessed towards the opening along an axial direction to form a groove; the groove extends along a circumferential direction of a tubular object to form a limiting plate; a retaining groove is formed between a bottom surface of the limiting plate and a bottom surface of the groove; a limiting block that can slide into the retaining groove is disposed on the mounting plate; a side wall of the groove is provided with a first positioning block, and a side wall of the limiting block is provided with a first positioning groove that is matched with the first positioning block to limit rotation of the partition board.
  • a fixing function is implemented on the mounting plate and the tubular part of the micro smoke detector.
  • the tubular part In an axial direction of the tubular part, when a limiting block is rotated into the retaining groove, the tubular part is limited from breaking away from the mounting plate by means of an abutting effect, and when the limiting block is rotated out, the tubular part can break away from the mounting plate; in a rotation direction of the tubular part, after the mounting plate rotates relative to the tubular part, the first positioning block is clamped into the first positioning groove, and a deformation force between the first positioning block and the first positioning groove limits relative rotation between the mounting plate and the tubular part.
  • a second positioning block extends from a bottom of the mounting plate along an axial direction, and the partition board is provided with a second positioning groove that extends along a circumferential direction for rotation of the second positioning block.
  • the mounting plate can be rotatably mounted with the tubular part only after the second positioning block is embedded into the second positioning groove, and the forward and reverse mounting sequence of the mounting plate is specified, to avoid reverse mounting of the mounting plate and the tubular part.
  • the switch button includes a lifting column and a button base that is disposed on one side, facing towards the opening, of the partition board, and a channel for sliding of the lifting column thais disposed in the button base and a second button is disposed on the control circuit board ;
  • the lifting column triggers, by means of relative movement between the mounting plate and the tubular part, the second button to perform an action;
  • an elastic member that drives the lifting column away from the second button by means of an elastic effect is disposed between a top of the lifting column and the second button;
  • a through hole is disposed, in a through manner, in the channel towards an interior of the groove, and a bottom of the lifting column is provided with a startup block that runs through the through hole; and the startup block is provided with a guide bevel that drives, by means of contact with the limiting block during rotation, the lifting column to contact the second button.
  • a battery is mounted in a battery cavity in a production process, and the battery cannot be taken out, and therefore a switch button needs to start the battery; when the mounting plate is not mounted to the base, the lifting column gets away from the second button under an effect of the elastic member; and when the mounting plate is mounted to the base, the limiting block gets into contact with the guide bevel, to drive the lifting column to overcome elastic force of the elastic member and move towards the second button, and the second button is triggered, and the power supply is started.
  • a side wall of the battery cavity is provided with a sliding hole;
  • the retaining groove is provided with a stop groove running through the partition board, and a sliding block is slidably connected in the tubular part;
  • the sliding block includes a triggering block that is slidably connected to the sliding hole and that extends into the battery cavity;
  • the sliding block includes a stop block that is slidably connected to the stop groove and that extends into the retaining groove;
  • a torsion spring is disposed in the tubular part, and one end of the torsion spring is connected to or is in contact with the tubular part; the other end of the torsion spring is connected to the triggering block; when a battery is not loaded, the torsion spring drives, by means of an elastic effect, the triggering block to move towards the battery cavity, and the stop block is located in the retaining groove and limits rotation of the limiting block; and after the battery is loaded, the triggering block leaves the battery cavity and drives the torsion spring to deform, and the stop block gets
  • the torsion spring drives the stop block to move into the retaining groove. That is, the stop block is located in a rotation range of the limiting block, to prevent the mounting plate from being mounted to the tubular part; in the process of mounting a battery in the battery cavity, the side wall of the battery abuts against the triggering block, and pushes the sliding block to move outwards along a radial direction of the tubular part, and to drive the torsion spring to deform; moreover, the stop block moves outwards; the limiting block can rotate in the retaining groove, to implement fixation of the mounting plate and the tubular part.
  • the base includes a truncated pyramid tube and a fixing plate; a top of the truncated pyramid tube is slidably connected to a bottom of the cover body along an axial direction of the cover body; the fixing plate is slidably clamped and embedded with a bottom of the truncated pyramid tube along a circumferential direction; a supporting plate for triggering the first button is disposed in the truncated pyramid tube, and an accommodating cavity for accommodating a battery is disposed between the supporting plate and the fixing plate.
  • the fixing plate is provided with a switch plate, and a travel switch is disposed in the truncated pyramid tube; and when the fixing plate and the truncated pyramid tube rotate along a circumferential direction, the switch plate moves relative to the travel switch and is in contact with the travel switch, so that the switch plate presses to close the travel switch to control the power supply to supply power to a circuit board.
  • the present invention has the following beneficial effect: when this type of micro smoke detector is mounted to a top inside a house, a user presses a cover body on the top, to make the cover body move towards a base; the first button on the control circuit board is triggered by the base, and the user can stop chirping of the smoke detector and test the smoke detector in this manner.
  • the smoke detector set in this manner is relatively small, and in the manner of trigging by using the cover body, the area of the cover body occupies more than 90% of the area of an orthographic projection of a base, and the smoke detector can be triggered provided that the cover body is pressed.
  • the cover body is made, by using the elastic part between the base and the cover body, away from the location where the first button is triggered.
  • 1 base; 11, mounting plate; 12, tubular part; 13, cover body; 14, clamping and embedding block; 15, opening; 16, connection structure; 17, sound production hole; 18, partition board; 19, battery cavity; 2, detection part; 21, sound production part; 22, supporting rod; 23, flow deflector; 24, arc-shaped partition board; 25, light emitting diode; 26, through slot; 3, sliding hole; 31, stop groove; 32, sliding block; 33, triggering block; 34, stop block; 35, torsion spring; 36, circular slot; 4, control circuit board; 41, first button; 42, second button; 43, salient point; 5, smoke inlet hole; 6, elastic part; 61, shaping hole; 62, elastic piece; 63, spring seat; 64, spring bore; 65, compression spring; 66, trigger switch; 67, trigger piece; 7, limiting part; 71, first limiting block; 72, second limiting block; 731, truncated pyramid tube; 732, fixing plate; 733, supporting plate; 734, accommodating cavity; 735, switch plate; 736,
  • the present invention is aimed to resolve the problems during miniaturization of the smoke detector in the overall structure. Moreover, there are two structures for the mounting form of the battery, and a structure of a micro smoke detector to which power is supplied by a cable is provided.
  • a micro smoke detector as shown in FIG. 1 and FIG. 2 , includes three parts from bottom to top: a mounting plate 11, a tubular part 12, and a cover body 13 respectively, which are all formed by means of injection molding; as shown in FIG. 10 , the mounting plate 11 is provided with a bolt hole 98, and the mounting plate 11 is fixed on a wall surface or a ceiling by using a screw passing through the bolt hole 98.
  • the shape of the tubular part 12 is tubular, and a partition board 18 is integrally formed on a bottom of the tubular part 12; an opening 15 is disposed on a top of the tubular part 12; the tubular part 12 implements a function of connecting the cover body 13 to the mounting plate 11; a connection structure 16 is disposed between the bottom of the tubular part 12 and the mounting plate 12; a limiting part 7 that limits the cover body 13 from breaking away from the tubular part 12 is disposed between the top of the tubular part 12 and the cover body 13; a detection part 2 for detecting smoke concentration, a sound production part 21 for generating sound waves, and a control circuit board 4 of the detection part 2 and the sound production part 21 are disposed from top to bottom in the cover body 13; an elastic part 6 that drives the cover body 13 to move away from the base 1 along an axial direction of the base 1 is disposed between the cover body 13 and the tubular part 12 (as shown in FIG. 6 ).
  • an external structure of the cover body 13 is: the cover body 13 is in a tubular structure; a top of the cover body 13 is provided with a sound production hole 17; a side wall of the circumference of the cover body 13 is provided with a smoke inlet hole 5 for entrance of the smoke; smoke inlet holes 5 are uniformly distributed on the side wall of the cover body 13, for entrance of the smoke into the detection part 2.
  • the smoke inlet hole 5 is formed by a supporting rod 22 that extends along an axial direction of the cover body 13, a flow deflector 23 disposed between adjacent supporting rods 22, and an arc-shaped partition board 24 that extends along a circumferential direction.
  • the flow deflector 23 is obliquely disposed.
  • the sound production part 21 is a sheet-shaped buzzer, and the buzzer is disposed below the sound production hole 17 ( FIG. 3 ).
  • the detection part 2 is a photoelectric smoke alarming structure, and for the specific structure thereof, refer to the invention patent with the application publication No. " CN102754136A "; a bottom of the detection part 2 is provided with two opposite light emitting diodes 25; because the internal space of the cover body 13 is relatively small, the space for response of the detection part 2 is relatively small, and the sensitivity of smoke alarming is affected to some extent; however, a control circuit board 4 is disposed below the detection part 2, and therefore the control circuit board 4 is provided with two through slots 26 for embedment of the light emitting diodes 25, to reduce the height of the detection part 2 plus the control circuit board 4; within the same height, the height of the detection part 2 may be increased to improve the sensitivity of detection.
  • a first button 41 is disposed at a central location of the bottom of the control circuit board 4.
  • the first button 41 is pressed to send pulse to a control circuit in the control circuit board 4, to trigger the control circuit in the control circuit board 4 to drive the detection part 2 and the sound production part 21 in FIG. 2 to perform an action; moreover, the first button 41 is a button that automatically springs back after being triggered.
  • the specific structure of the tubular part 12 includes: a partition board 18 disposed on the bottom of the tubular part 12 and a battery cavity 19 that is formed by recessing, by the partition board 18, towards the cover body 13; the battery cavity 19 is located on a back surface of the partition board 18 in FIG. 6 ; a battery is disposed in the battery cavity 19; the battery and the battery cavity 19 are integrally encapsulated; that is, the battery is an irreplaceable battery, and positive and negative electrodes of the battery are connected to the control circuit board 4 in FIG.
  • the elastic part 6 is a shaping hole 61 and an elastic piece 62 that are disposed on an outer side wall of the battery cavity 19; one shaping hole 61 corresponds to one elastic piece 62; there are two shaping holes 61; the shaping holes 61 extend along a width direction of the battery cavity 19; the two shaping holes 61 are symmetrically disposed about a centre of an upper surface of the battery cavity 19; one end of the elastic piece 62 is connected to an end portion of a length direction of the shaping hole 61, and the other end of the elastic piece 62 obliquely extends towards the opening 15; projections of two elastic pieces 62 in a vertical direction are staggered; as shown in FIG. 8 , an oblique end of the elastic piece 62 abuts against a bottom of the control circuit board 4, and converts a downward deformation force into an elastic force that drives the cover body 13 to move upwards.
  • a salient point 43 is disposed at a central location outside the battery cavity 19; after the cover body 13 is covered on the tubular part 12, the salient point 43 corresponds to the first button 41; when the cover body 13 moves towards the tubular part 12, the salient point 43 contacts the first button and presses the first button 41; in this process, the salient point 43 reduces the movement stroke of the cover body 13.
  • the limiting part 7 includes a clamping and embedding block 14 that extends downwards along a lower surface of the cover body 13; the clamping and embedding block 14 is annular; an outer surface of the annular clamping and embedding block 14 is adhered to an inner wall at the location of the opening 15 of the tubular part 12, and the clamping and embedding block 14 makes the outer surface of the cover body 13 flush with the outer surface of the tubular part 12.
  • the limiting part 7 further includes a first limiting block 71 disposed on an outer surface of the cover body 13 (that is, the outer surface of the clamping and embedding block 14), and a second limiting block 72 that is disposed on the inner wall of the tubular part 12 and that is located in the movement direction of the first limiting block 71; the first limiting block 71 corresponds to the second limiting block 72; and two first limiting blocks 71 are disposed in the circumferential direction of the tubular part 12; during mounting, the first limiting block 71 and the second limiting block 72 move back to back in a horizontal direction to deform, so that the cover body 13 is embedded into the tubular part 12; in a use process, the first limiting block 71 and the second limiting block 72 abut against each other in a height direction, to limit the cover body 13 from breaking away the tubular part 12; in this process, the limiting part 7 implements a function of connecting the cover body 13 to the tubular part 12.
  • the partition board 18 is provided with a switch button 8 for controlling switch-on and switch-off of a battery; the switch button 8 is applicable to cases in which a battery is irreplaceable, to avoid false triggering of the micro smoke detector; if a replaceable battery is used, before transportation and use of the smoke detector, the battery is not loaded into the battery cavity 19.
  • the switch button 8 includes a button base 82 disposed on one side, facing towards the cover body 13, of the partition board 18; the button base 82 is provided with a channel 83 in a through manner along an axial direction of the button base 82; a lifting column 81 and a second button 42 that is disposed on the control circuit board 4 are slidably connected in the channel 83; switch-on and switch-off of the second button 42 control power-on and power-off of the battery; the structure of the second button 42 is the same as that of the first button 41; the button base 82 is disposed directly below the second button 42; a startup block 86 is disposed on a lower end of a length direction of the lifting column 81; a part, located below the channel 83, of the partition board 18 is provided with a through hole 85 for the startup block 86 to pass through; an elastic member 84 is disposed on an upper end of a length direction of the lifting column 81 (that is, the elastic member 84 is disposed between the
  • the startup block 86 is pressed on one side of the battery cavity 19 of the partition board 18 to drive the lifting column 81 to move and to trigger the second button 42 to perform an action, and subsequently the elastic member 84 drives the lifting column 81 away from the second button 42.
  • the diameter of the mounting plate 11 is greater than the diameter of the tubular part 12; and the connection structure 16 between the mounting plate 11 and the tubular part 12 includes a circular slot 36 disposed on the mounting plate 11 for embedment of the tubular part 12.
  • the partition board 18 of the tubular part 12 is recessed towards the opening 15 along an axial direction of the partition board 18, to form a groove 9; an outward part of the groove 9 extends along a circumferential direction of the tubular part 12 to form a limiting plate 91; a retaining groove 92 is formed between a bottom surface of the limiting plate 91 and a bottom surface of the groove 9; a limiting block 93 that can slide into the retaining groove 92 is disposed in the circular slot 36 of the mounting plate 11; two limiting blocks 93 are disposed in the circumferential direction of the circular slot 36 and are symmetrically distributed; a bolt hole 98 is disposed on each limiting block 93.
  • the mounting plate 11 and the tubular part 12 are rotated, and the limiting block 93 is embedded into the retaining groove 92; the mounting plate 11 is prevented, by means of an abutting effect of the limiting block 93 and the retaining groove 92, from breaking away from the tubular part 12.
  • a first positioning block 94 is disposed on a side wall of the groove 9; as shown in FIG. 10 , a first positioning groove 95 is disposed on a side wall of the limiting block 93, and the shapes of the cross sections of the first positioning block 94 and the first positioning groove 95 are semicircular; in the process in which the mounting plate 11 rotates relative to the tubular part 12, with the rotation of the mounting plate 11, the first positioning block 94 deforms to enter the first positioning groove 95, to implement clamping and fixation between the mounting plate 11 and the tubular part 12.
  • a second positioning block 96 extends from the bottom of the mounting plate 11 along an axial direction; the partition board 18 is provided with a second positioning groove 97 that extends along the circumferential direction and that is used for rotation of the second positioning block 96; when the limiting block 93 on the mounting plate 11 is mounted to a wrong location, the second positioning block 96 cannot enter the second positioning groove 97; that is, the limiting block 93 and the retaining groove 92 are staggered in the height direction and cannot clamped and embedded with each other, to prevent the reverse mounting of the mounting plate 11 and the tubular part 12.
  • a guide bevel 87 that can contact a surface of the limiting block 93 is disposed on the startup block 86; in the process in which the limiting block 93 slides into the retaining groove 92, the guide bevel 87 gradually contacts the limiting block 93, and the lifting column 81 gradually moves upwards to press the second button 42.
  • the mounting process of Embodiment 1 the mounting plate 11 is fixed to a wall surface or a ceiling by using a screw; the battery is fixed in the battery cavity 19 of the tubular body; the limiting block 93 is clamped into the groove 9; then the mounting plate 11 is rotated, and the limiting block 93 enters the retaining groove 92; at the same time, the lifting column 81 is toggled to move upwards to trigger the second button 42 and power is supplied to the control circuit board 4; when moving to a location where the first positioning block 94 is clamped with the first positioning groove 95, the mounting plate 11 is fixed to the tubular part 12.
  • Embodiment 1 The use process of Embodiment 1: the cover body 13 is pressed, and the salient point 43 triggers the first button 41 (when there is no salient point 43 an outer side wall of the battery cavity 19 can also trigger the first button 41), and the control circuit board 4 controls the sound production part 21 to make a sound in a short time period or stop making a sound; when smoke enters the cover body 13 from the smoke inlet hole 5, the detection part 2 sends an electric signal to the control circuit board 4, and the control circuit board 4 drives the sound production part 21 to make a sound, to remind a user that there is fire.
  • Embodiment 2 differs from Embodiment 1 in that, in Embodiment 2, the structure of the tubular part 12 is different, and a structure of a replaceable battery is used in the tubular part 12.
  • a switch button 8 does not need to be disposed in the micro smoke detector; therefore, the problem to be resolved is: to confirm that there is a battery in the mounted micro smoke detector.
  • a sliding hole 3 is disposed on one side of the inside of the tubular part 12; a retaining groove 92 is provided with a stop groove 31 running through a partition board 18; a sliding block 32 is slidably connected in the stop groove 31; one end, facing towards a battery cavity 19, of the sliding block 32 forms a triggering block 33; in a slide process of the sliding block 32, the triggering block 33 can be moved into the battery cavity 19; the sliding block 32 further includes a stop block 34 that is slidably connected to the stop groove 31 and that extends into the retaining groove 92; a torsion spring 35 is disposed in the tubular part 12; one end of the torsion spring 35 abuts against the tubular part 12; the other end of the torsion spring 35 is connected to the triggering block 33; the torsion spring 35 can drive the slidable sliding block 32 to reset; the partition board 18 is connected to a fixing base 88 by using a bolt; the fixing base 88
  • a cover plate 99 (see FIG. 2 ) is clamped and embedded on the battery cavity 19, and the cover plate 99 prevents detachment of the battery.
  • the mounting process of Embodiment 2 is: the mounting process of Embodiment 2 is the same as that of Embodiment 1, and has a mounting step of a battery: when a battery is not loaded, the torsion spring 35 drives, by means of an elastic effect, the triggering block 33 to move towards the battery cavity 19, and the stop block 34 is located in the retaining groove 92 and limits rotation of the limiting block 93; and after the battery is loaded, the triggering block 33 leaves the battery cavity 19 and drives the torsion spring 35 to deform, and the stop block 34 gets away from the retaining groove 92 and is used for rotation of the limiting block 93, to implement fixation of the mounting plate 11 and the tubular part 12.
  • Embodiment 3 differs from Embodiment 1 in that, a cable power supply manner is used in Embodiment 2; in Embodiment 3, as shown in FIG. 1 and FIG. 2 , a tubular part 12 and a mounting plate 11 do not need to rotate; that is, the tubular part 12 and the mounting plate 11 integrally form a base 11; a detection part 2, a sound production part 21, and a control circuit board 4 in the base 1 are connected to a cable in the house.
  • Embodiment 3 The mounting process of Embodiment 3: the costs of Embodiment 3 are relatively low, and the use time is relatively long, provided that a cable is connected to a terminal on the base 1.
  • the use process of Embodiment 3 is the same as that of Embodiment 1, and details are not described herein.
  • Embodiment 4 differs from Embodiment 1 in that: in Embodiment 4, to improve the life span of the micro smoke detector, an elastic part 6 does not use a form of an elastic piece; the elastic part 6 in Embodiment 4 includes a spring seat 63 disposed on the partition board 18; two spring seats 63 are disposed on each side of the battery cavity 19.
  • a spring hole 64 is disposed in the spring seat 63; the spring hole 64 extends along a height direction of the spring seat 63; a compression spring 65 is disposed in the spring hole 64; when the cover body 13 (not shown in the figure) is covered on the tubular part 12, the compression spring 65 abuts against a bottom of the control circuit board 4, and the compression spring 65 is in a compressed state.
  • the cover body 13 (not shown in the figure) is popped up by means of an elastic effect of the compression spring 65; compared with the elastic piece 62, the compression spring 65 made of metal has a longer life span.
  • Embodiment 5 differs from Embodiment 1 in that, in Embodiment 4, to simplify the production process, a switch button 8 is simplified; the switch bottom 8 of Embodiment 5 uses a form of a trigger switch 66; the trigger switch 66 includes a trigger piece 67 obliquely disposed downwards; an end portion of the trigger piece 67 is semicircular; a through hole 85 is used for passing through by the semicircular end portion of the trigger piece 67, and the semicircular end portion of the trigger piece 67 protrudes from a lower surface of the through hole 85.
  • Embodiment 5 The use process and acting process of Embodiment 5 are the same as those of Embodiment 1, and the only difference is that a second button 42 (not shown in the figure) and a lifting column 81 (not shown in the figure) are replaced with the trigger switch 66; when a mounting plate 11 is rotated, a limiting block 93 contacts the semicircular end portion of the trigger piece 67 to jack up the trigger piece 67; the trigger switch 66 transmits a model to the control circuit board 4 (not shown in the figure), to control startup of the power supply.
  • Embodiment 6 regarding a micro smoke detector, Embodiment 6 differs from Embodiments 1-5 in that, as shown in FIG. 16 , the shape and the internal structure of the base 1 are adjusted. As shown in FIG. 17 , the tubular part 12 of the micro alarm is changed to a shape of a truncated pyramid (referred to as a truncated pyramid tube 731 below), which has a tapering shape and round corner processing is performed in the circumferential direction.
  • a truncated pyramid tube 731 referred to as a truncated pyramid tube 731 below
  • the base 1 includes two parts, which are respectively a truncated pyramid tube 731 and a fixing plate 732.
  • the top of the truncated pyramid tube 731 is slidably clamped and embedded with the bottom of the cover body 13, and the truncated pyramid tube 731 and the cover body 13 cannot break away from each other.
  • a supporting plate 733 is disposed at the middle location inside the truncated pyramid tube 731; the supporting plate 733 is connected to an inner side wall of the truncated pyramid tube 731.
  • a salient point 43 is disposed at the center of the supporting plate 733; the salient point 43 is matched with a first button 41 on a PCB board; when the cover body 13 moves downwards, the first button 41 abuts against the salient point 43, to trigger startup of the first button 41; the salient point 43 implements the function of reducing the movement stroke of the cover body 13.
  • the fixing plate 732 is rotatably clamped with the bottom of the truncated pyramid tube 731; the fixing plate 732 is penetrated through by a fixing member such as a screw, so as to be fixed to a wall surface;
  • the configuration, opposite to the configuration on the fixing plate 732, of the truncated pyramid tube 731 is clamped by a structure similar to the limiting block 93, to prevent detachment.
  • an accommodating cavity 734 for accommodating a battery is formed between the supporting plate 733 and the fixing plate 732;
  • the shape of the battery is a lithium battery having a shape of a cuboid (shown in FIG. 17 ); the shape of the lithium battery is used to reduce the height of the truncated pyramid tube 731.
  • a travel switch 736 is disposed below the supporting plate 733; a trigger location of the travel switch 736 is on a side surface; as shown in FIG. 17 , a switch plate 735 is disposed on the fixing plate 732.
  • the switch plate 735 moves relative to the travel switch 736 and is in contact with the travel switch 736, so that the switch plate 735 presses to close the travel switch 736 to control the power supply to supply power to a circuit board.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
EP17885444.4A 2017-06-14 2017-12-02 Miniaturrauchmelder Active EP3640904B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710448935.XA CN107093307B (zh) 2017-06-14 2017-06-14 微型烟雾报警器
PCT/CN2017/114341 WO2018227897A1 (zh) 2017-06-14 2017-12-02 微型烟雾报警器

Publications (3)

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EP3640904A1 true EP3640904A1 (de) 2020-04-22
EP3640904A4 EP3640904A4 (de) 2021-03-03
EP3640904B1 EP3640904B1 (de) 2023-09-20

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CN107093307B (zh) * 2017-06-14 2020-10-09 苏州珀斯方得电子有限公司 微型烟雾报警器
CN109712378B (zh) * 2019-02-21 2023-11-17 赛特威尔电子股份有限公司 一种报警器
CN110264663A (zh) * 2019-07-16 2019-09-20 常州紫浩电子有限公司 一种侧向发声烟雾报警器
CN111617426B (zh) * 2020-06-05 2022-03-18 新金城智能装备有限公司 一种具有报警功能的智能化厨房控制装置
CN111815894A (zh) * 2020-07-29 2020-10-23 苏州珀斯方得电子有限公司 烟雾报警器
CN112791338A (zh) * 2021-01-28 2021-05-14 徐孝先 一种建筑消防用的智能烟雾报警器
CN113068350A (zh) * 2021-04-07 2021-07-02 济南中维世纪科技有限公司 一种基于视频图像的烟火检测装置
CN114241707A (zh) * 2022-01-20 2022-03-25 钟永松 一种用于工业厂房的防污报警器
CN114821944B (zh) * 2022-05-12 2023-09-19 尼特智能科技股份有限公司 一种便于安装具有定位显示的烟雾传感器
CN115762041B (zh) * 2022-11-18 2023-06-16 烟台淼盾物联技术有限公司 一种消防用感烟探测器
CN117593866B (zh) * 2024-01-19 2024-06-25 联捷(南通)智能科技有限公司 一种消防手动报警开关动作性能测试装置

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JP2010033238A (ja) * 2008-07-28 2010-02-12 Panasonic Electric Works Co Ltd 住宅用火災警報器
CA2776544A1 (en) * 2009-10-05 2011-04-14 Cavius Aps Smoke alarm
FR2973174B1 (fr) * 2011-03-25 2013-04-05 Hager Security Boitier a doigt d'anti-montage sur contact
CN202093644U (zh) * 2011-05-27 2011-12-28 苏州珀斯方得电子有限公司 一种烟雾报警器
GB2517975A (en) * 2013-09-09 2015-03-11 Cavius Aps Activating button
CN204303115U (zh) * 2014-12-03 2015-04-29 张维国 一种新型烟感报警器
CN105096495B (zh) * 2015-07-21 2017-07-28 国网山西省电力公司大同供电公司 一种用于电力系统的报警设备
CN105160797A (zh) * 2015-10-26 2015-12-16 朱文军 烟雾报警器
CN205263988U (zh) * 2016-03-15 2016-05-25 宁波市乐星感应电器有限公司 一种新型结构的烟雾报警器
CN105931417B (zh) * 2016-06-27 2018-03-16 宁波金盾电子工业股份有限公司 独立式光电感烟火灾探测报警器
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CN107093307B (zh) * 2017-06-14 2020-10-09 苏州珀斯方得电子有限公司 微型烟雾报警器

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Publication number Publication date
WO2018227897A1 (zh) 2018-12-20
EP3640904B1 (de) 2023-09-20
EP3640904A4 (de) 2021-03-03
CN107093307B (zh) 2020-10-09
CN107093307A (zh) 2017-08-25

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