CN112991662A - Accurate smoke detection alarm - Google Patents
Accurate smoke detection alarm Download PDFInfo
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- CN112991662A CN112991662A CN202110176052.4A CN202110176052A CN112991662A CN 112991662 A CN112991662 A CN 112991662A CN 202110176052 A CN202110176052 A CN 202110176052A CN 112991662 A CN112991662 A CN 112991662A
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/02—Cable terminations
- H02G15/04—Cable-end sealings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
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- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
The utility model relates to an accurate smoke detection alarm, use in smoke detector's field, it includes casing and lower casing, it feels the smoke chamber to go up casing and casing down within a definite time formation, it feels the indoor installation circuit board of cigarette, go up the casing and set up the through wires hole that supplies the electric wire of connecting circuit board to pass, the casing is seted up into the cigarette passageway down, be equipped with soft plug in the through wires hole, soft plug perisporium is equipped with the bell and spigot joint pipe, bell and spigot joint pipe periphery wall and through wires hole pore wall spiro union, soft plug and bell and spigot joint pipe flush with one side that last casing sensed the smoke chamber dorsad, the bell and spigot joint pipe extends the through wires hole towards one side of feeling the smoke chamber, be equipped with the girdle on the periphery wall that the through wires hole was extended to the bell and spigot joint pipe, the takeover girdle is taken over and is tightly on last shells inner wall, be equipped with seal structure. This application has and makes the ceiling leak and be difficult for feeling inside the smoke chamber through the through wires hole infiltration, and the protection is felt the cigarette detector and is avoided the effect of damage.
Description
Technical Field
The application relates to the field of smoke detectors, in particular to an accurate smoke detection alarm.
Background
The smoke detection alarm is a detector responding to solid or liquid particles generated by combustion or pyrolysis suspended in the atmosphere, namely the smoke detection alarm realizes fire prevention by monitoring fire smoke. The smoke detection alarm can be further divided into detectors such as ion smoke detector, photoelectric smoke detector, infrared beam, air suction type detector and the like, and the ion smoke detector and the photoelectric smoke detector are commonly used in the market at present.
The smoke detector comprises an upper shell and a lower shell, a smoke sensing chamber is formed between the upper shell and the lower shell, the upper shell is attached to the ceiling and fixed through screws during installation of the smoke detector, a circuit board is installed inside the smoke sensing chamber, connecting wires are arranged on the circuit board, the lateral wall of the upper shell attached to the ceiling is provided with a threading hole through which a power supply line penetrates, and the lateral wall of the lower shell, which faces away from the upper shell, is provided with a smoke inlet channel along the peripheral side.
In view of the above-mentioned related technologies, the inventor believes that the smoke detector is installed on the ceiling for a long time, once the ceiling leaks water, water will permeate into the smoke sensing chamber along the threading holes, so that the circuit board is wet, and the smoke detector is damaged.
Disclosure of Invention
In order to improve the ceiling and leak and lead to water to feel the smoke chamber inside along the through wires hole infiltration, cause the problem of feeling the damage of smoke detector, this application provides an accurate smoke detection alarm.
The application provides a pair of accurate sense smoke detection alarm adopts following technical scheme:
an accurate smoke detection alarm comprises an upper shell and a lower shell, wherein a smoke sensing chamber is formed between the upper shell and the lower shell, a circuit board is installed in the smoke sensing chamber, a threading hole for an electric wire connected to the circuit board to pass through is formed in the side wall of the upper shell facing back to the lower shell, a smoke inlet channel is formed in the side wall of the lower shell facing back to the upper shell along the peripheral side, a soft rubber plug is arranged in the threading hole, a sleeve pipe is arranged on the peripheral wall of the soft rubber plug, the peripheral wall of the sleeve pipe is in threaded connection with the hole wall of the threading hole, the soft rubber plug and one side of the sleeve pipe facing back to the smoke sensing chamber are flush with one side of the upper shell facing back to the smoke sensing chamber, the sleeve pipe extends out the threading hole towards one side of the smoke sensing chamber, a connecting pipe annular edge is arranged on the peripheral wall of the sleeve pipe extending out the threading hole, the connecting pipe annular edge abuts against the inner wall of the, the flexible glue plug is provided with a deformation hole through which the power supply line passes, and the hole wall of the deformation hole is abutted against the outer wall of the electric wire.
By adopting the technical scheme, during installation, the sleeve pipe is screwed in the threading hole from the inner side of the upper shell to the outer side until the annular edge of the connecting pipe abuts against the inner wall of the upper shell, and at the moment, one side of the sleeve pipe and the soft rubber plug, which is back to the smoke sensing chamber, is flush with one side of the upper shell, which is back to the smoke sensing chamber, so that the upper shell can be attached to a ceiling to facilitate the installation of the smoke sensing detector; the sealing between the sleeve pipe and the threading hole is realized through the sealing structure, so that the possibility that water permeates into the smoke sensing chamber due to water leakage of a ceiling is reduced; the electric wire penetrates through the deformation hole, and the soft rubber plug has good elasticity, so that after the electric wire penetrates through the deformation hole, the soft rubber plug can be abutted against the outer wall of the electric wire, sealing between the electric wire and the deformation hole is achieved, water is prevented from permeating into the smoke sensing chamber, the circuit board is protected from being wetted, and the possibility of damage of the smoke sensing detector is reduced.
Optionally, seal structure includes along the sealing washer one that takes over all sides of girdle and set up, go up the inner wall of casing and offer interior caulking groove along all sides of through wires hole on, a sealing washer part is connected in interior caulking groove, the sealing washer is one and is extended the position of interior caulking groove and is offered sealed breach along the periphery towards one side of taking over the girdle, all sides of taking over the girdle are supported tightly in sealed breach.
Through adopting above-mentioned technical scheme, the bell and spigot joint pipe is screwed in the back of threading hole, and the week side of taking over the arris supports tightly in the sealed breach of sealing washer one, can realize the sealed between bell and spigot joint pipe and the threading hole to block that water infiltrates the inside possibility of feeling the smoke chamber from between bell and spigot joint pipe outer wall and the threading hole pore wall.
Optionally, the week side of a sealing washer one dorsad takeover ring edge is equipped with the area of tightening, be equipped with two arriss on the periphery wall of sealing washer one, two be formed with between the arriss and supply to tighten the space that the area was held, and two one side that is close to each other on the arris all is equipped with the fender arris, two keep off the arris and paste in one side of tightening the area dorsad sealing washer one.
By adopting the technical scheme, the tightening belt tightens the sealing ring one towards the direction of the connecting pipe ring edge under the action of self tightening elastic force, so that the sealing ring one is more tightly abutted against the connecting pipe ring edge, the sealing effect of the sealing ring on the connecting pipe ring edge is improved, and the sealing effect between the sleeve pipe and the threading hole is further improved; two arriss that set up on the sealing washer one and two arriss keep off the arris that set up separately, play to tightening and take spacing effect for tightening and taking stable cover and tightening on the sealing washer one to sealing washer one.
Optionally, set up the seal groove along the week side of through wires hole on the outer wall of last casing, the seal groove with the through wires hole is linked together, be equipped with sealing washer two in the seal groove, sealing washer two supports tightly simultaneously on the cell wall of seal groove and the outer wall of bell and spigot joint pipe, be connected with week side card arris on the internal perisporium of sealing washer two, set up week side draw-in groove with week side card arris matched with on the periphery wall of bell and spigot joint pipe, week side card arris embedding and support tightly in week side draw-in groove, one side edge periphery that sealing washer two are towards feeling the smoke chamber is connected with bottom side card arris, set up the bottom side draw-in groove with bottom side card arris matched with on the cell wall of seal groove, bottom side card.
Through adopting above-mentioned technical scheme, through the embedding of week side card arris and bottom side card arris one-to-one on the sealing washer two and support tightly in week side draw-in groove and bottom side draw-in groove, can make sealing washer two to inlay stably and put in the seal groove, seal between bell and spigot pipe and the through wires hole, improve sealed effect, reduce the inside possibility of water infiltration sense smoke chamber.
Optionally, go up the inside week side along the through wires hole of casing and offer annular runner, go up the inside week side along the through wires hole of casing and still offer a plurality of runners, a runner is by the through wires hole downwards setting towards annular runner's direction slope, a runner's one end intercommunication annular runner, a runner's the other end intercommunication through wires hole and the linking position of seal groove, go up the inside flowing back runner that still offers of casing, the one end intercommunication annular runner of flowing back runner, the other end of flowing back runner runs through the outer wall of casing, just the flowing back runner sets up downwards towards annular runner's direction slope.
Through adopting above-mentioned technical scheme, if there is water to ooze through the seal groove and along the inside of the pipe outer wall that cup joints towards the smoke chamber, in a plurality of runners of accessible discharged into the annular flow channel, the rethread flowing back runner discharges out the casing to improve sealed effect, can effectively reduce water and continue towards the possibility of the inside infiltration of smoke chamber.
Optionally, an insertion joint is formed in the outer wall of the upper casing along the periphery of the outlet of the liquid discharge flow passage, a mesh enclosure covering the outlet of the liquid discharge flow passage is arranged on the outer side of the liquid discharge flow passage, the mesh enclosure is inserted into the insertion joint, a fixture block is arranged on the outer side wall of the mesh enclosure, a seam notch communicated with the insertion joint and used for embedding the fixture block is formed in the outer wall of the upper casing, and a rotary groove communicated with the seam notch and used for the fixture block to rotate to is formed in the inner wall of the insertion joint along the periphery.
By adopting the technical scheme, when the mesh enclosure is installed, the mesh enclosure is aligned to the insertion joint, the clamping block on the side wall of the mesh enclosure is aligned to the gap and inserted into the gap, and then the mesh enclosure is rotated to transfer the clamping block into the rotary groove, so that the mesh enclosure can be fixed, the mesh enclosure stably covers the outlet of the liquid discharge flow channel, and the liquid discharge flow channel is blocked by blocking dust and mosquitoes from entering the liquid discharge flow channel.
Optionally, a rubber pad is arranged on the fixture block and is abutted against the inner wall of the rotary groove.
Through adopting above-mentioned technical scheme, the cushion that sets up can increase the frictional force between fixture block and the rotary trough inner wall to the restriction screen panel rotates, improves the fixed stability of screen panel, reduces the screen panel and rotates and the possibility that drops from last casing.
Optionally, a water blocking edge is arranged on the peripheral wall of the upper shell and is wavy, and the water blocking edge is obliquely and downwards arranged towards the direction back to the upper shell.
By adopting the technical scheme, the arranged water blocking ribs are used for blocking water leakage of the ceiling so as to prevent water from flowing downwards along the outer wall of the upper shell and permeating into the joint of the upper shell and the lower shell, thereby reducing the possibility that water permeates into the interior of the smoke sensing chamber from the joint of the upper shell and the lower shell; and the water blocking arris is arranged in a wave shape with the whole body inclined downwards, so that the drainage effect of the water blocking arris can be improved.
Optionally, a water blocking edge is arranged on the periphery of the bottom edge of the water blocking edge.
By adopting the technical scheme, the arranged water blocking edge is used for blocking water from flowing along the joint of the upward shell and the lower shell at the bottom of the water blocking edge.
Optionally, a tightening seam is arranged on the soft rubber plug along the peripheral side of the deformation hole, and a tightening belt is embedded in the tightening seam.
Through adopting above-mentioned technical scheme, the lacing tape is under the effect of self lacing elastic force, and is tightened the flexible glue stopper towards the direction of electric wire for the flexible glue stopper is more closely knit supports tightly on the electric wire, improves the sealed effect between electric wire and the deformation hole, with better water infiltration that blocks.
In summary, the present application includes at least one of the following beneficial technical effects:
1. after the sleeve pipe is arranged in the threading hole, the sealing between the sleeve pipe and the threading hole can be realized through the first sealing ring and the second sealing ring, and after the electric wire passes through the deformation hole, the electric wire can be tightly propped against the outer wall of the electric wire under the action of the self elasticity of the soft rubber plug, so that the sealing between the electric wire and the deformation hole can be realized, the water is effectively prevented from permeating into the smoke sensing chamber through the threading hole, and the possibility of moisture damage of the smoke sensing detector is reduced;
2. the tightening belt tightens the first sealing ring towards the direction of the connecting pipe annular edge under the action of self tightening elasticity, so that the first sealing ring is more tightly abutted against the connecting pipe annular edge, the sealing effect of the sealing ring on the connecting pipe annular edge is improved, and the sealing effect between the sleeve pipe and the threading hole is further improved;
3. the lacing tape is under the effect of self lacing elastic force, and is tightened the flexible glue stopper towards the direction of electric wire for flexible glue stopper more closely knit support tightly on the electric wire, improve the sealed effect between electric wire and the deformation hole, with better water infiltration that blocks.
Drawings
Fig. 1 is a schematic diagram of an accurate smoke detection alarm in an embodiment of the present application.
Figure 2 is a cross-sectional view of an accurate smoke detection alarm in an embodiment of the present application.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is an enlarged view of a portion B in fig. 2.
Fig. 5 is an enlarged view of a portion C in fig. 2.
Fig. 6 is a schematic view illustrating the installation of the mesh enclosure in the embodiment of the present application.
Reference numerals: 1. an upper housing; 11. threading holes; 12. an embedded groove is formed; 13. a sealing groove; 131. a bottom side card slot; 14. an annular flow passage; 15. branch flow channels; 16. a liquid discharge flow channel; 17. splicing seams; 171. sewing a notch; 172. rotating the groove; 18. a water blocking edge; 181. a water retaining edge; 2. a lower housing; 21. a smoke inlet channel; 3. a smoke sensing chamber; 4. a circuit board; 5. an electric wire; 6. a soft rubber plug; 61. a deformation hole; 62. tightly binding the seam; 621. a tightening strap; 7. sleeving a pipe; 71. connecting the pipe with an annular edge; 72. a clamping groove on the periphery; 8. a sealing structure; 81. a first sealing ring; 811. sealing the gap; 82. tightening the belt; 83. carrying out edge banding; 831. blocking edges; 9. a second sealing ring; 91. the peripheral side is provided with a clamping edge; 92. clamping edges at the bottom side; 10. a mesh enclosure; 101. and (7) clamping blocks.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses accurate smoke detection alarm. Referring to fig. 1 and 2, accurate smoke detection alarm includes casing 1 and casing 2 down, goes up casing 1 and forms between casing 2 down and feels smoke chamber 3, feels smoke chamber 3 internally mounted circuit board 4, goes up casing 1 middle part and sets up the through wires hole 11 that supplies the electric wire 5 of connecting on circuit board 4 to pass, and sets up into cigarette passageway 21 along week side at casing 2 lateral wall of casing 1 dorsad down. During the installation, paste upper casing 1 on the ceiling and fix through the screw, or fix through sticky mode, electric wire 5 arranges in the pre-buried wiring pipe in the roof.
Referring to fig. 2, be equipped with soft rubber stopper 6 in through wires hole 11, soft rubber stopper 6 adopts the rubber material, socket pipe 7 is established to the periphery side cover of soft rubber stopper 6, soft rubber stopper 6 periphery wall is fixed through sticky mode with the 7 inner walls of socket pipe, socket pipe 7 periphery wall and 11 pore wall threaded connection of through wires hole, after screwing socket pipe 7 in through wires hole 11, soft rubber stopper 6 and socket pipe 7 are towards one side of feeling smoke chamber 3 and one side that last casing 1 was towards feeling smoke chamber 3 flush mutually, make and go up casing 1 and can paste on the ceiling, with the installation of convenient smoke detector, soft rubber stopper 6 and socket pipe 7 are towards one side of feeling smoke chamber 3 and are extended through wires hole 11, connect takeover arris 71 on the periphery wall that socket pipe 7 extends through wires hole 11, takeover arris 71 and the integrative manufacturing shaping of socket pipe 7, takeover arris 71 supports tightly on the inner wall of last casing 1.
Referring to fig. 2 and 3, deformation hole 61 is seted up at the middle part of flexible glue stopper 6 to power supply line 5 passes, because flexible glue stopper 6 self has better elasticity, after electric wire 5 passed deformation hole 61, flexible glue stopper 6 can support tightly on the outer wall of electric wire 5, thereby realizes sealed between electric wire 5 and the deformation hole 61, can block that the ceiling leaks and feel inside smoke chamber 3 from permeating between deformation hole 61 and the electric wire 5. One side that soft plug 6 felt smoke chamber 3 dorsad is offered along the deformation hole 61 periphery and is restrainted tights 62, tighten and sew up 62 embedded lacing tape 621 of establishing, lacing tape 621 chooses for use and tightens the better elastic cord of elasticity, thereby under the effect of lacing tape 621 self tightening elasticity, can tighten flexible plug 6 towards the direction of electric wire 5, make soft plug 6 more closely knit support tightly on electric wire 5, improve the sealed effect between electric wire 5 and the deformation hole 61, leak from the infiltration and feel smoke chamber 3 inside between deformation hole 61 and the electric wire 5 with better stopping the ceiling, thereby protection smoke detector avoids moist damage.
Referring to fig. 2 and 4, a sealing structure 8 is provided between the nipple annular rib 71 and the upper housing 1 to seal between the socket pipe 7 and the threading hole 11. The sealing structure 8 comprises a first sealing ring 81 arranged along the peripheral side of the connecting pipe annular edge 71, the first sealing ring 81 is made of rubber, the cross section of the first sealing ring 81 is circular, an inner embedded groove 12 is formed in the inner wall of the upper shell 1 along the peripheral side of the threading hole 11, the cross section of the inner embedded groove 12 is arc-shaped, a part of the first sealing ring 81 is embedded and adhered in the inner embedded groove 12, the rest of the first sealing ring 81 is positioned outside the inner embedded groove 12, a sealing notch 811 is formed in the position, outside the inner embedded groove 12, of the first sealing ring 81 and towards one side of the connecting pipe annular edge 71 along the periphery, the cross section of the sealing notch 811 is right-angled, the peripheral side of the connecting pipe annular edge 71 is abutted to the sealing notch 811, sealing between the connecting pipe 7 and the threading hole 11 can be achieved, and the inside of the smoke sensing chamber 3 is.
Referring to fig. 4, a tightening belt 82 is arranged on the periphery of the first sealing ring 81, which faces away from the first connecting pipe annular edge 71, the tightening belt 82 is an elastic belt with better tightening elasticity, the tightening belt 82 is sleeved on the first sealing ring 81, and the tightening belt 82 can tighten the first sealing ring 81 towards the direction of the first connecting pipe annular edge 71 under the action of the tightening elasticity of the first sealing ring 81, so that the first sealing ring 81 is more tightly abutted against the first connecting pipe annular edge 71, the sealing effect of the first sealing ring 81 on the first connecting pipe annular edge 71 is improved, the sealing effect between the second connecting pipe 7 and the threading hole 11 is further improved, and the water is better prevented from permeating into the smoke sensing chamber 3. In addition, two strip edges 83 are arranged on the periphery of the first sealing ring 81, which is back to the connecting pipe ring edge 71, the two strip edges 83 and the first sealing ring 81 are made of the same material and are integrally formed, a space for accommodating the tightening belt 82 is formed between the two strip edges 83, blocking edges 831 are arranged on the two strip edges 83, which are close to each other, the blocking edges 831 and the strip edges 83 are made of the same material and are integrally formed, and the blocking edges 831 arranged on the two strip edges 83 and the two strip edges 83 respectively play a role in limiting the tightening belt 82, so that the tightening belt 82 can be stably sleeved on the first sealing ring 81 to tighten the first sealing ring 81.
Referring to fig. 2 and 3, offer seal groove 13 along the week side of through wires hole 11 on the outer wall of last casing 1, the cross section of seal groove 13 is right-angle shape, seal groove 13 is linked together with through wires hole 11, seal groove 13 embeds establishes two sealing rings 9, two sealing rings 9 adopt rubber materials, the cross section of two sealing rings 9 is square, two sealing rings 9 support tightly simultaneously on the cell wall of seal groove 13 and the outer wall of bell and spigot 7, can realize the sealing between bell and spigot 7 and through wires hole 11, it leaks from the inside of the infiltration smoke sensing room 3 between bell and spigot 7 and through wires hole 11 to block the ceiling.
Referring to fig. 2 and 3, a peripheral side snap edge 91 is provided on the inner peripheral wall of the second seal ring 9, a bottom side snap edge 92 is provided along the periphery of one side of the second seal ring 9 facing the smoke sensing chamber 3, the peripheral side snap edge 91 and the bottom side snap edge 92 are made of the same material as the second seal ring 9 and are integrally formed, the cross sections of the peripheral side snap edge 91 and the bottom side snap edge 92 are both dovetail-shaped, a peripheral side snap groove 72 matched with the peripheral side snap edge 91 is provided on the outer peripheral wall of the sleeve pipe 7, the peripheral side snap edge 91 is embedded and tightly pressed in the peripheral side snap groove 72, a bottom side snap groove 131 matched with the bottom side snap edge 92 is provided on the groove wall of the seal groove 13, the bottom side snap edge 92 is embedded and tightly pressed in the bottom side snap groove 131, on one hand, the function of limiting the second seal ring 9 is achieved, so that the second seal ring 9 is stably embedded in the seal groove 13 to seal between the sleeve pipe 7 and the threading, the possibility of water penetrating into the interior of the smoke sensing chamber 3 is reduced.
Referring to fig. 2 and 3, an annular flow channel 14 is formed in the upper casing 1 along the peripheral side of the threading hole 11, a plurality of branch flow channels 15 are communicated with the joint portion of the annular flow channel 14, the threading hole 11 and the sealing groove 13, the branch flow channels 15 are arranged obliquely and downwards in the direction of the annular flow channel 14, a liquid discharge flow channel 16 is further formed in the upper casing 1, one end of the liquid discharge flow channel 16 is communicated with the annular flow channel 14, the other end of the liquid discharge flow channel 16 penetrates through the outer wall of the upper casing 1, and the liquid discharge flow channel 16 is arranged obliquely and downwards in the direction away from the annular flow channel. If water seeps into the smoke sensing chamber 3 along the outer wall of the sleeve pipe 7 through the sealing groove 13, the water can be discharged into the annular flow channel 14 through the plurality of branch flow channels 15, and then the water is discharged out of the upper shell 1 through the liquid discharge flow channel 16, so that the sealing effect is improved, and the possibility that the water continuously seeps into the smoke sensing chamber 3 can be effectively reduced.
Referring to fig. 5 and 6, a mesh enclosure 10 covering the outlet of the liquid discharge flow channel 16 is disposed on the outer wall of the upper housing 1, an insertion joint 17 is disposed on the outer wall of the upper housing 1 along the periphery of the outlet of the liquid discharge flow channel 16, the mesh enclosure 10 is inserted into the insertion joint 17, a fastening block 101 is fixedly connected to the outer side wall of the mesh enclosure 10, a slot gap 171 which is communicated with the inserting slot 17 and is used for inserting the fixture block 101 is arranged on the outer wall of the upper shell 1, a rotary groove 172 communicated with the slot gap 171 and used for the fixture block 101 to rotate is arranged on the inner wall of the insertion joint 17 along the peripheral side, a rubber pad which is abutted against the inner wall of the rotary groove 172 is adhered on the surface of the fixture block 101, the rubber pad is made of rubber, the friction force between the block 101 and the inner wall of the rotary groove 172 is increased, the rotation of the net cover 10 is restricted, the net cover 10 is stably fixed, so that the mesh enclosure 10 stably covers the outlet of the liquid discharge flow path 16 to prevent dust and mosquitoes from entering the liquid discharge flow path 16 and causing blockage of the liquid discharge flow path 16.
Referring to fig. 5, a water blocking rib 18 is fixedly connected to the outer peripheral wall of the upper casing 1 below the mesh enclosure 10, the water blocking rib 18 is wave-shaped and is arranged obliquely downward in a direction away from the upper casing 1, and the water blocking rib 18 is used for blocking water leaking from the ceiling to block water from flowing downward along the outer wall of the upper casing 1 and infiltrating into the seam between the upper casing 1 and the lower casing 2, so that the possibility that water infiltrates into the smoke sensing chamber 3 from the seam between the upper casing 1 and the lower casing 2 is reduced. In addition, the bottom edge of the water blocking edge 18 is fixedly connected with a water blocking edge 181, and the water blocking edge 181 is used for blocking water from flowing along the bottom of the water blocking edge 18 towards the joint between the upper shell 1 and the lower shell 2.
The implementation principle of the accurate smoke detection alarm of the embodiment of the application is as follows: after the electric wire 5 passes through the deformation hole 61, the tightening belt 621 can tighten the soft rubber plug 6 towards the electric wire 5 under the action of self tightening elasticity, so that the soft rubber plug 6 tightly abuts against the electric wire 5, the sealing between the electric wire 5 and the deformation hole 61 is realized, and the water leakage of a ceiling is prevented from permeating into the smoke sensing chamber 3 from the position between the deformation hole 61 and the electric wire 5; the tightening belt 82 is sleeved on the first sealing ring 81, and under the action of self tightening elasticity, the first sealing ring 81 can be tightened towards the connecting pipe annular edge 71 by the tightening belt 82, so that the first sealing ring 81 is tightly abutted against the connecting pipe annular edge 71, the sealing between the sleeving pipe 7 and the threading hole 11 is realized, and the water leakage of a ceiling is prevented from permeating into the smoke sensing chamber 3 from the space between the sleeving pipe 7 and the threading hole 11; the second sealing ring 9 abuts against the groove wall of the sealing groove 13 and the outer wall of the sleeve pipe 7 at the same time, sealing between the sleeve pipe 7 and the threading hole 11 can be achieved, and the ceiling is prevented from leaking water and permeating into the smoke sensing chamber 3 from the space between the sleeve pipe 7 and the threading hole 11.
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 an accurate smoke detection alarm, includes casing (1) and casing (2) down, go up casing (1) and form between casing (2) down and feel smoke chamber (3), feel smoke chamber (3) internally mounted circuit board (4), the lateral wall of going up casing (1) casing (2) is dorsad down sets up through wires hole (11) that supply to connect electric wire (5) on circuit board (4) to pass, lower casing (2) is dorsad the lateral wall of last casing (1) and is seted up along week side and advance cigarette passageway (21), its characterized in that: the inner wall of the upper shell (1) is provided with a flexible rubber plug (6) in the threading hole (11), the peripheral wall of the flexible rubber plug (6) is provided with a sleeve joint pipe (7), the peripheral wall of the sleeve joint pipe (7) is in threaded connection with the hole wall of the threading hole (11), one side of the flexible rubber plug (6) and the sleeve joint pipe (7) facing away from the smoke sensing chamber (3) is flush with one side of the upper shell (1) facing away from the smoke sensing chamber (3), the threading hole (11) extends out of one side of the sleeve joint pipe (7) facing towards the smoke sensing chamber (3), the peripheral wall of the sleeve joint pipe (7) extending out of the threading hole (11) is provided with an annular rib (71), the connecting pipe annular rib (71) is tightly abutted against the inner wall of the upper shell (1), a sealing structure (8) is arranged between the connecting pipe annular rib (71) and the inner wall of the upper shell (1), and a variable-shaped hole (61) through, the hole wall of the deformation hole (61) is tightly abutted against the outer wall of the electric wire (5).
2. The accurate smoke detection alarm of claim 1, wherein: seal structure (8) include along sealing washer (81) of all sides setting of taking over arris (71), go up and offer in caulking groove (12) along all sides of through wires hole (11) on the inner wall of casing (1), sealing washer (81) part is connected in caulking groove (12), sealing washer (81) extend in caulking groove (12) the position and towards one side of taking over arris (71) along the periphery offer sealed breach (811), take over the all sides wall of arris (71) and support tightly in sealed breach (811).
3. The accurate smoke detection alarm of claim 2, wherein: sealing washer (81) are taken over week side of ring edge (71) dorsad and are equipped with tightening belt (82), be equipped with two on the periphery wall of sealing washer (81) and take arris (83), two be formed with the space that supplies tightening belt (82) to hold between taking arris (83), and two take arris (83) to go up one side that is close to each other and all be equipped with fender arris (831), two keep off arris (831) and paste in one side of tightening belt (82) dorsad sealing washer (81).
4. The accurate smoke detection alarm of claim 1, wherein: the outer wall of the upper shell (1) is provided with a sealing groove (13) along the circumferential side of the threading hole (11), the sealing groove (13) is communicated with the threading hole (11), a sealing ring II (9) is arranged in the sealing groove (13), the sealing ring II (9) is simultaneously abutted against the groove wall of the sealing groove (13) and the outer wall of the sleeve pipe (7), the inner circumferential wall of the sealing ring II (9) is connected with a circumferential clamping edge (91), the outer circumferential wall of the sleeve pipe (7) is provided with a circumferential clamping groove (72) matched with the circumferential clamping edge (91), the circumferential clamping edge (91) is embedded and abutted against the circumferential clamping groove (72), one side of the sealing ring II (9) facing the smoke sensing chamber (3) is connected with a bottom clamping edge (92) along the circumferential edge, the groove wall of the sealing groove (13) is provided with a bottom clamping groove (131) matched with the bottom clamping edge (92), the bottom clamping ridge (92) is embedded and tightly propped in the bottom clamping groove (131).
5. The accurate smoke detection alarm of claim 4, wherein: go up casing (1) inside week side along through wires hole (11) and offer annular flow channel (14), go up casing (1) inside week side along through wires hole (11) and still offer a plurality of runners (15), runner (15) are by direction slope downwardly setting of through wires hole (11) towards annular flow channel (14), the one end intercommunication annular flow channel (14) of runner (15), the other end intercommunication through wires hole (11) of runner (15) and the linking position of seal groove (13), go up casing (1) inside still to offer flowing back runner (16), the one end intercommunication annular flow channel (14) of flowing back runner (16), the other end of flowing back runner (16) runs through the outer wall of last casing (1), just flowing back runner (16) set up downwardly towards the direction slope of the annular flow channel (14) dorsad.
6. The accurate smoke detection alarm of claim 5, wherein: the improved liquid discharge device is characterized in that an insertion joint (17) is formed in the outer wall of the upper shell (1) along the periphery of an outlet of the liquid discharge flow passage (16), a mesh cover (10) covering the outlet of the liquid discharge flow passage (16) is arranged on the outer side of the liquid discharge flow passage (16), the mesh cover (10) is inserted into the insertion joint (17), a clamping block (101) is arranged on the outer side wall of the mesh cover (10), a seam notch (171) communicated with the insertion joint (17) and used for embedding the clamping block (101) is formed in the outer wall of the upper shell (1), and a rotary groove (172) communicated with the seam notch (171) and used for the clamping block (101) to rotate to is formed in the inner wall of the insertion joint (.
7. The accurate smoke detection alarm of claim 6, wherein: the fixture block (101) is provided with a rubber pad which is abutted against the inner wall of the rotary groove (172).
8. The accurate smoke detection alarm of claim 1, wherein: the water blocking device is characterized in that a water blocking edge (18) is arranged on the peripheral wall of the upper shell (1), the water blocking edge (18) is wavy, and the water blocking edge (18) is obliquely and downwards arranged towards the direction back to the upper shell (1).
9. The accurate smoke detection alarm of claim 8, wherein: and a water blocking edge (181) is arranged on the periphery of the bottom edge of the water blocking edge (18).
10. The accurate smoke detection alarm of claim 1, wherein: the soft rubber plug (6) is provided with a tight-binding seam (62) along the circumferential side of the deformation hole (61), and a tightening belt (621) is embedded in the tight-binding seam (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176052.4A CN112991662B (en) | 2021-02-07 | 2021-02-07 | Accurate smoke detection alarm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176052.4A CN112991662B (en) | 2021-02-07 | 2021-02-07 | Accurate smoke detection alarm |
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| CN112991662A true CN112991662A (en) | 2021-06-18 |
| CN112991662B CN112991662B (en) | 2021-12-07 |
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| CN202110176052.4A Active CN112991662B (en) | 2021-02-07 | 2021-02-07 | Accurate smoke detection alarm |
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| CN210298321U (en) * | 2019-08-20 | 2020-04-10 | 珠海格力电器股份有限公司 | Wire passing rubber ring, electric cabinet and air conditioning unit |
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| CN211090255U (en) * | 2019-12-18 | 2020-07-24 | 安晟通(天津)高压电源科技有限公司 | From double-circuit high voltage power supply who takes waterproof construction |
| CN212183927U (en) * | 2020-03-26 | 2020-12-18 | 北京华科仪科技股份有限公司 | Submerged electrode sealing device |
| CN212433917U (en) * | 2020-06-29 | 2021-01-29 | 上海光华永盛消防智能***股份有限公司 | Fire detection mechanism |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016103124A (en) * | 2014-11-28 | 2016-06-02 | サクサ株式会社 | Alarm device |
| CN210579790U (en) * | 2019-06-05 | 2020-05-19 | 常州市瑞斯威机械有限公司 | Waterproof power supply shell for LED display screen |
| CN210166901U (en) * | 2019-07-19 | 2020-03-20 | 京安工程有限公司 | Waterproof structure of fire-fighting equipment mounted on wall |
| CN210298321U (en) * | 2019-08-20 | 2020-04-10 | 珠海格力电器股份有限公司 | Wire passing rubber ring, electric cabinet and air conditioning unit |
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| CN112991662B (en) | 2021-12-07 |
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