CN219246181U - Smoke alarm with split-type smoke inlet chamber - Google Patents

Abstract

The utility model relates to the technical field of smoke alarm, and in particular discloses a smoke alarm with a split-type smoke inlet chamber, which comprises: the base, install photoelectric sensing subassembly and shell on the base, photoelectric sensing subassembly includes the circuit board, installs advance the smoke chamber on the circuit board and set up advance the smoke chamber in and with circuit board electrical signal connection's transmitting tube and receiver tube, advance the smoke chamber including the photoelectricity frame, install advance the smoke chamber support on the photoelectricity frame and install advance the smoke chamber upper shield on advance the smoke chamber support, advance the smoke chamber support bottom and seted up the intercommunicating pore, the intercommunicating pore aligns the setting with the transmitting end of transmitting tube on the photoelectricity frame, the receiving end of receiver tube. The utility model adopts the split-type smoke inlet chamber, reduces the shielding of sight lines of workers in the welding process, and improves the welding work efficiency and the welding precision.

Description

Smoke alarm with split-type smoke inlet chamber

Technical Field

The utility model relates to the technical field of smoke alarms, and particularly discloses a smoke alarm with a split-type smoke inlet chamber.

Background

The smoke alarm is a device for detecting smoke concentration by utilizing the photoelectric sensing principle, and the core components of the smoke alarm are a circuit board, a transmitting tube and a receiving tube, after the light emitted by the transmitting tube irradiates the smoke, the smoke absorbs and scatters the light, so that the receiving tube receives certain light intensity change, and then converts the light intensity change into an electric signal to judge whether to trigger an alarm or not.

In order to make smoke detection more accurate, general smoke alarm can be provided with parts such as shading shell, insect screen cover and form into smoke inlet chamber for avoid external light, foreign matter, blow etc. to the interference of smoke detection. The patent number CN214335905U discloses a backward scattering photoelectric sensing detector, which comprises a shell, a darkroom bracket and a darkroom top shell, wherein the darkroom bracket and the darkroom top shell are arranged in the shell, the darkroom bracket comprises a darkroom bottom plate, a transmitting pipe sleeve and a receiving pipe sleeve which are fixedly connected to the darkroom bottom plate, the transmitting pipe and the receiving pipe are respectively arranged in the transmitting pipe sleeve and the receiving pipe sleeve, and the darkroom top shell and the darkroom bottom plate are buckled to form a darkroom cavity, namely a smoke inlet chamber.

However, the existing smog device has the problem of high installation difficulty, after the workers complete the installation of the transmitting tube and the receiving tube and the darkroom bottom plate, in order to realize the electric signal connection of the transmitting tube and the receiving tube and the circuit board, the pins of the transmitting tube and the receiving tube are aligned and inserted into the holes on the circuit board, and then are connected through welding processing.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a smoke alarm with a split-type smoke inlet chamber.

The utility model discloses a smoke alarm with a split-type smoke inlet chamber, which adopts the following technical scheme:

a smoke alarm with a split-type smoke inlet chamber, comprising: the base, install photoelectric sensing subassembly and shell on the base, photoelectric sensing subassembly includes the circuit board, installs advance the smoke chamber on the circuit board and set up advance the smoke chamber in and with circuit board electrical signal connection's transmitting tube and receiver tube, advance the smoke chamber including the photoelectricity frame, install advance the smoke chamber support on the photoelectricity frame and install advance the smoke chamber upper shield on advance the smoke chamber support, advance the smoke chamber support bottom and seted up the intercommunicating pore, the intercommunicating pore aligns the setting with the transmitting end of transmitting tube on the photoelectricity frame, the receiving end of receiver tube.

Preferably, the transmitting tube and the receiving tube are connected with the circuit board through setting pins, and the pins of the transmitting tube and the receiving tube extend outwards from the photoelectric frame in an inclined manner and are not blocked by the photoelectric frame above the photoelectric frame.

Preferably, the smoke inlet chamber support comprises a support bottom plate and a support outer ring connected to the support bottom plate, the communication hole is formed in the support bottom plate, and the smoke inlet chamber upper cover is fastened to the support outer ring.

Preferably, a light shielding ring is arranged at the inner top of the upper cover of the smoke inlet chamber, the light shielding ring divides the smoke inlet chamber into an outer cavity and an inner cavity, a plurality of partition boards are arranged on the support of the smoke inlet chamber along the circumferential direction at intervals, the partition boards divide the outer cavity into a plurality of independent flues, a gap which enables the outer cavity to be communicated with the inner cavity is reserved between the lower part of the light shielding ring and the bottom of the support of the smoke inlet chamber, and the transmitting pipe and the receiving pipe transmit and receive light in the inner cavity.

Further preferably, a limiting column is arranged on the partition board, and a limiting hole for the insertion of the limiting column is formed in the top of the upper cover of the smoke inlet chamber.

Further preferably, a positioning protrusion is arranged on the inner top wall of the shell, and the positioning protrusion is accommodated in the limiting hole.

Preferably, a placing groove is arranged at the bottom of the smoke inlet chamber bracket, and the placing groove is embedded with the upper surface of the photoelectric frame.

Preferably, a limiting block is arranged on the outer side wall of the smoke inlet chamber support, and a limiting groove for the limiting block to be inserted into is formed in the inner wall of the shell.

Preferably, the photoelectric frame is provided with a sinking step for embedding the communication hole of the smoke inlet chamber bracket.

Compared with the prior art, the utility model at least comprises the following beneficial effects:

the smoke alarm adopts the smoke inlet chamber with a split structure, the photoelectric frame and the smoke inlet chamber support form the lower half part of the smoke inlet chamber cavity, and the upper cover of the smoke inlet chamber is the upper half part of the smoke inlet chamber cavity, so that workers can firstly place the photoelectric frame with the transmitting pipe and the receiving pipe arranged on the circuit board for welding, then assemble the smoke inlet chamber support and the upper cover of the smoke inlet chamber, thereby preventing the workers from being blocked by the sight of the smoke inlet chamber support in the welding process, and improving the welding work efficiency and the welding precision.

Drawings

FIG. 1 is a schematic diagram of an assembled structure of the present embodiment;

fig. 2 is a schematic diagram of a split structure of the present embodiment;

fig. 3 is a schematic view of a disassembly structure of the photoelectric rack and the smoke inlet chamber rack of the embodiment;

fig. 4 is a schematic diagram of an assembly structure of the photoelectric rack and the smoke inlet chamber rack of the present embodiment;

FIG. 5 is a schematic view showing an assembly structure of the photoelectric rack, the smoke inlet chamber bracket and the smoke inlet chamber upper cover of the embodiment;

fig. 6 is a bottom view of the split structure of the present embodiment.

Reference numerals illustrate:

1. a base; 11. connecting a female buckle; 2. a circuit board; 3. a photovoltaic rack; 31. sinking the step; 4. a transmitting tube; 5. a receiving tube; 6. a smoke inlet chamber bracket; 61. a bracket base plate; 611. a communication hole; 612. a placement groove; 62. an outer ring of the bracket; 63. a partition plate; 64. a limit column; 65. a limiting block; 7. an upper cover of the smoke inlet chamber; 71. a diaphragm; 72. a limiting hole; 8. a housing; 81. positioning the bulge; 82. a limit groove; 83. and connecting the male buckle.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

The utility model discloses a smoke alarm with a split-type smoke inlet chamber, which is shown in figures 1-6 and comprises a base 1, a circuit board 2 arranged on the base 1, the smoke inlet chamber arranged on the circuit board 2, and a transmitting tube 4 and a receiving tube 5 which are arranged in the smoke inlet chamber and are electrically connected with the circuit board 2. Wherein, the smoke inlet chamber consists of a photoelectric frame 3, a smoke inlet chamber bracket 6 and a smoke inlet chamber upper cover 7.

Referring to fig. 2 to 3, a circuit board 2 is mounted on a base 1, and the circuit board 2 may be mounted and connected with the base 1 through a fastener; the two sides of the photoelectric frame 3 are respectively provided with a transmitting tube sleeve and a receiving tube sleeve, the transmitting tube 4 and the receiving tube 5 can be respectively inserted and installed correspondingly, the photoelectric frame 3 is installed on the circuit board 2, and the transmitting tube 4 and the receiving tube 5 can be respectively connected with the circuit board 2 after being welded; the smoke inlet chamber bracket 6 is erected on the photoelectric frame 3, the smoke inlet chamber bracket 6 comprises a bracket bottom plate 61 and a bracket outer ring 62 connected to the bracket bottom plate 61, a waist-shaped hole-shaped communication hole 611 is formed in the bracket bottom plate 61, the communication hole 611 of the bracket bottom plate 61 corresponds to the upper ends of the emitting pipe 4 and the receiving pipe 5, and the emitting pipe 4 and the receiving pipe 5 can emit and receive light through the communication hole 611; the upper smoke inlet chamber cover 7 is arranged on the support 6 of the smoke inlet chamber, and the lower end cover of the upper smoke inlet chamber cover 7 is buckled on the outer ring 62 of the support, so that the photoelectric frame 3, the support 6 of the smoke inlet chamber and the upper smoke inlet chamber cover 7 are enclosed to form a cavity of the smoke inlet chamber, and the upper smoke inlet chamber cover 7 is provided with meshes for air to enter the cavity of the smoke inlet chamber; the casing 8 is mounted on the base 1, the casing 8 covers and encloses the circuit board 2, the photoelectric frame 3, the transmitting tube 4, the receiving tube 5, the smoke inlet chamber bracket 6 and the smoke inlet chamber upper cover 7, and an opening for air to enter the smoke inlet chamber upper cover 7 is formed in the casing 8.

Referring to fig. 3, the transmitting tube 4 and the receiving tube 5 are connected with the circuit board 2 by electric signals after being welded by setting pins, and the transmitting tube sleeve and the receiving tube sleeve on the photoelectric frame 3 are obliquely arranged, so that the pins of the transmitting tube 4 and the receiving tube 5 obliquely extend outwards towards the photoelectric frame 3, and the upper parts of the pins cannot be shielded by the photoelectric frame 3 body. Compared with the prior integrated smoke inlet chamber structure, the smoke inlet chamber is of a split structure, the photoelectric frame 3 and the smoke inlet chamber support 6 are assembled and combined to form the lower half part of the smoke inlet chamber cavity, and the smoke inlet chamber upper cover 7 is used as the upper half part of the smoke inlet chamber cavity, so that workers can place the photoelectric frame 3 on the circuit board 2 first, and after the welding of the transmitting tube 4, the receiving tube 5 and the circuit board 2 is finished, the smoke inlet chamber support 6 and the smoke inlet chamber upper cover 7 are buckled and installed, thereby being more convenient for the workers in the welding process, greatly avoiding the problem of reduced welding and installing efficiency due to shielding of sight or larger assembly, and being of the split structure, being convenient for replacing parts and reducing the waste of the whole assembly caused by partial damage.

Besides, the split smoke alarm for the smoke inlet chamber is also suitable for batch processing of a chip mounter, the photoelectric frame 3 is made of PA, POM, PBT, PC, PPO or one of high-temperature-resistant materials such as nylon and glass fibers, after the pin bending processing of the transmitting tube 4 and the receiving tube 5, workers can place the photoelectric frame 3 provided with the transmitting tube 4 and the mounting tube 5 on the circuit board 2, and after high-temperature processing of the spot tin and the chip mounter, welding processing can be finished in batches, the material of the smoke inlet chamber bracket 6 can be one of common materials such as PE and PP, and the smoke inlet chamber with a split structure can save the use of the high-temperature-resistant materials, so that the manufacturing cost is greatly reduced.

Referring to fig. 3 to 4, the upper surface periphery of the photo frame 3 is provided with a sinking step 31, the communication hole 611 of the bracket bottom plate 61 is just embedded with the sinking step 31, and the setting of the sinking step 31 can assist a worker to quickly erect the smoke inlet bracket 6 to the corresponding position of the photo frame 3, can also improve the installation stability of the smoke inlet bracket 6 on the photo frame 3, and can also improve the darkroom effect of the smoke inlet cavity. The bottom of the bracket bottom plate 61 is provided with a placing groove 612, and the placing groove 612 is clamped and embedded with the upper surface of the photoelectric frame 3, so that the assembly stability of the smoke inlet bracket 6 on the photoelectric frame 3 is further improved.

Referring to fig. 5 to 6, an aperture 71 is disposed at the inner top of the upper cover 7 of the smoke inlet chamber, the aperture 71 divides the smoke inlet chamber into an outer cavity and an inner cavity, the transmitting tube 4 and the receiving tube 5 transmit and receive light in the inner cavity, a plurality of vertically disposed partitions 63 are connected to the support base plate 61, the partitions 63 are disposed along the inner periphery of the support periphery 62 at intervals, the outer cavity is divided into a plurality of independent flues by the partitions 63, and a gap is reserved between the lower part of the aperture 71 and the support base plate 61 to enable the outer cavity to be communicated with the inner cavity. The setting of the shading ring 71 improves the darkroom effect of the smoke inlet chamber cavity on the one hand, and on the other hand, the shading ring 71 and the partition plate 63 are matched to form independent flues, so that the outside smoke can enter the inner cavity of the smoke inlet chamber from each flue more uniformly, and the detection accuracy of the smoke alarm is improved.

Referring to fig. 6, the outer side wall of the base 1 is provided with a connection button 11, the inner side wall of the housing 8 is provided with a connection button 83, the housing 8 is inserted into the connection button 11 through the connection button 83 and is fixedly connected with the base 1 after rotating, and the housing 8 and the base 1 clamp and fix the smoke inlet chamber bracket 6 and the smoke inlet chamber upper cover 7 erected on the photoelectric frame 3.

In order to further improve the mounting stability of the smoke inlet chamber support 6 and the smoke inlet chamber upper cover 7, referring to fig. 6, a limiting post 64 is further provided on the partition 63, and a limiting hole 72 for inserting the limiting post 64 is provided at the top of the smoke inlet chamber upper cover 7, so that the smoke inlet chamber upper cover 7 and the smoke inlet chamber support 6 are stably fastened.

In addition, in order to further improve the assembly stability of the split structure of the smoke inlet chamber, referring to fig. 6, a positioning protrusion 81 is provided on the inner top wall of the housing 8, and when the housing 8 is fastened to the base 1, the positioning protrusion 81 is accommodated in the limiting hole 72 of the upper cover 7 of the smoke inlet chamber, thereby improving the connection stability of the upper cover 7 of the smoke inlet chamber and the housing 8. In addition, the outer side wall of the support periphery 62 is provided with a limiting block 65, a limiting groove 82 is formed in the corresponding position of the inner wall of the shell 8, and when the shell 8 is buckled with the base 1, the limiting block 65 is contained in the limiting groove 82, so that the connection stability of the smoke inlet support 6 and the shell 8 is improved.

The foregoing has outlined rather broadly the more detailed description of the utility model in order that the detailed description of the utility model that follows may be better understood, and in order that the present principles and embodiments may be better understood; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.

Claims (9)

1. A smoke alarm with a split-type smoke inlet chamber, comprising: base (1), install circuit board (2) on base (1), install advance the smoke chamber on circuit board (2), set up advance in the smoke chamber and with circuit board (2) electrical signal connection's transmitting tube (4) and receiver tube (5), and install shell (8) on base (1), its characterized in that advances the smoke chamber and include photoelectricity frame (3), install advance smoke chamber support (6) on photoelectricity frame (3), and install advance smoke chamber upper shield (7) on advance smoke chamber support (6), advance smoke chamber support (6) bottom and seted up intercommunicating pore (611), intercommunicating pore (611) are aimed at setting with the transmitting end of transmitting tube (4) on photoelectricity frame (3), the receiving end of receiver tube (5).

2. The smoke alarm with the split-type smoke inlet chamber according to claim 1, wherein the emitting tube (4) and the receiving tube (5) are connected with the circuit board (2) through setting pins in an electric signal mode, and the pins of the emitting tube (4) and the receiving tube (5) extend outwards towards the photoelectric frame (3) in an inclined mode and are not shielded by the photoelectric frame (3) above.

3. The smoke alarm with the split smoke inlet chamber according to claim 1, wherein the smoke inlet chamber bracket (6) comprises a bracket bottom plate (61) and a bracket outer ring (62) connected to the bracket bottom plate (61), the communication hole (611) is formed in the bracket bottom plate (61), and the smoke inlet chamber upper cover (7) is buckled on the bracket outer ring (62).

4. The smoke alarm with the split structure of the smoke inlet chamber according to claim 1, wherein a light shielding ring (71) is arranged at the inner top of the upper cover (7) of the smoke inlet chamber, the smoke inlet chamber is divided into an outer cavity and an inner cavity by the light shielding ring (71), a plurality of partition plates (63) are arranged on the support (6) of the smoke inlet chamber at intervals along the circumferential direction, the outer cavity is divided into a plurality of independent flues by the plurality of partition plates (63), a gap which enables the outer cavity to be communicated with the inner cavity is reserved between the lower part of the light shielding ring (71) and the bottom of the support (6) of the smoke inlet chamber, and the transmitting tube (4) and the receiving tube (5) transmit and receive light in the inner cavity.

5. The smoke alarm with the split structure of the smoke inlet chamber according to claim 4, wherein the baffle plate (63) is provided with a limit post (64), and a limit hole (72) for inserting the limit post (64) is formed in the top of the upper cover (7) of the smoke inlet chamber.

6. The smoke alarm with the split-type smoke inlet chamber according to claim 5, wherein a positioning protrusion (81) is arranged on the inner top wall of the outer shell (8), and the positioning protrusion (81) is accommodated in the limiting hole (72).

7. The smoke alarm with the split-type smoke inlet chamber according to claim 1, wherein a placing groove (612) is formed in the bottom of the smoke inlet chamber support (6), and the placing groove (612) is embedded with the upper surface of the photoelectric frame (3).

8. The smoke alarm with the split structure of the smoke inlet chamber according to claim 1, wherein a limiting block (65) is arranged on the outer side wall of the smoke inlet chamber support (6), and a limiting groove (82) for the limiting block (65) to be inserted into is formed in the inner wall of the shell (8).

9. The smoke alarm with the split-type smoke inlet chamber according to claim 1, wherein the photoelectric frame (3) is provided with a sinking step (31) for embedding the communication hole (611) of the smoke inlet chamber bracket (6).

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