CN220323989U

CN220323989U - Fire detector for single-sided assembly components of PCB

Info

Publication number: CN220323989U
Application number: CN202321456951.0U
Authority: CN
Inventors: 路锦春; 路俊磊
Original assignee: Ningbo Jinchun Intelligent Technology Co ltd
Current assignee: Ningbo Jinchun Intelligent Technology Co ltd
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2024-01-09
Anticipated expiration: 2033-06-08

Abstract

The utility model relates to the technical field of fire detectors, and particularly discloses a fire detector for single-sided assembly components of a PCB. Comprising the following steps: top cap, smoke chamber, PCB board and base, smoke chamber bottom one side is sunk and is set up as the detection zone, and the opposite side forms the embedding platform and as non-detection zone, the PCB board set up in embedding platform below, its characterized in that, the smoke chamber bottom be equipped with the spliced pole, the spliced pole with the PCB board is connected, the PCB board with the interval is left to the embedding platform bottom surface, the PCB board orientation the components and parts and double-barrelled are installed to the one side of smoke chamber, double-barrelled stretch into to in the detection zone of smoke chamber, components and parts holding in PCB board with regional space department between the embedding platform. The scheme has the advantages of small volume, low cost of the PCB single-sided board, meeting the mass production requirement of the chip mounter and high production efficiency.

Description

Fire detector for single-sided assembly components of PCB

Technical Field

The utility model relates to the technical field of fire detectors, and particularly discloses a fire detector for single-sided assembly components of a PCB.

Background

The smoke-sensing fire detector is a device for detecting and alarming fire by detecting the smoke concentration of the environment, and the principle is that light irradiates on smoke particles to scatter to different degrees, and the scattered light is captured and received to judge the smoke concentration of the environment, so that the smoke-sensing fire detector works stably and reliably, and is widely applied to various indoor occasions.

The structure of the smoke-sensing fire detector generally comprises a shell, a darkroom, a PCB board, a transmitting tube, a receiving tube and other components connected with the electrical signal of the PCB board, wherein after the environmental smoke particles enter the darkroom, the transmitting tube and the receiving tube convert the intensity changes of the transmitted and received light into electrical signals through various components of the PCB board, so that fire alarms are sent to an external system after disaster judgment is made, and the fire detection and alarm functions are realized.

The labyrinth of the horizontal smoke detector with the height difference comprises a labyrinth base and a PCB (printed circuit board), wherein a detection area and a non-detection area are arranged in the labyrinth base, the bottom of the detection area is sunk, and the height difference is formed at the bottom of the non-detection area; the PCB circuit board is assembled in a mode of being embedded into the labyrinth base; the device also comprises a transmitting signal lamp and a receiving signal lamp which are mounted on the PCB, and the labyrinth base is embedded, and the PCB is attached to the bottom of the non-detection area of the labyrinth base.

Above-mentioned patent detector designs for horizontal maze base, have simple structure, small, advantage such as, however, because this PCB board assembles under the maze base with the embedded mode, in order to fix the PCB circuit board, PCB circuit board needs to laminate with the non-detection zone bottom of maze base for the area in the front mountable components and parts area of PCB board is less, and partial components and parts only can install at the back of PCB board, lead to need carrying out the equipment of double-barrelled and other components and parts respectively on the two-sided on the PCB board, and the two-sided equipment components and parts of PCB board are unfavorable for batch production, influence the production efficiency of detector, consequently, need develop a sense smoke fire detector of PCB single face equipment components and parts.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a fire detector for single-sided assembly components of a PCB.

The utility model discloses a fire detector for single-sided assembly components of a PCB, which adopts the following technical scheme:

a fire detector for a single-sided PCB assembly component, comprising: top cap, smoke chamber, PCB board and base, smoke chamber bottom one side is sunk and is set up as the detection zone, and the opposite side forms the embedding platform and as non-detection zone, the PCB board set up in embedding platform below, its characterized in that, the smoke chamber bottom be equipped with the spliced pole, the spliced pole with the PCB board is connected, the PCB board with the interval is left to the embedding platform bottom surface, the PCB board orientation the components and parts and double-barrelled are installed to the one side of smoke chamber, double-barrelled stretch into to in the detection zone of smoke chamber, components and parts holding in PCB board with regional space department between the embedding platform.

Preferably, a space with the height of (1-3) mm is reserved between the PCB and the bottom surface of the embedded platform.

Preferably, a limiting platform is arranged at the bottom of the smoke chamber, and the PCB is abutted to the limiting platform.

Further preferably, a double-tube mounting groove is formed in the smoke chamber, the double tube is inserted into the detection area of the smoke chamber through the double-tube mounting groove, and the bottom surface of the groove wall of the double-tube mounting groove is used as the limiting platform.

Preferably, the cigarette box further comprises a middle buckle, the middle buckle is used for fixing the cigarette box below the top cover, the PCB is arranged between the middle buckle and the cigarette box, and one surface of the PCB, which is away from the cigarette box, is contacted with the surface of the middle buckle.

Preferably, the base is provided with a binding post, the binding post comprises a terminal elastic sheet, the terminal elastic sheet comprises a fixing part, a line pressing part and a clamping part which are mutually connected, the fixing part is connected with the base, the clamping part is a clamping jaw capable of elastically deforming, and the clamping jaw clamps and fixes the upper surface and the lower surface of the PCB and conducts a circuit.

Preferably, the smoke chamber comprises a photoelectric seat and an insect prevention cover, an extension platform is arranged at the top of the photoelectric seat, and the insect prevention cover is buckled on the extension platform to form a smoke chamber structure with the photoelectric seat.

Preferably, a space with the height of (5-10) mm is reserved between the bottom of the epitaxial platform and the PCB.

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

the PCB board of this scheme can be embedded and install in smoke chamber one side for fire detector has the advantage of small, and is connected with the circuit board through setting up the spliced pole in the bottom of smoke chamber, unsettled being connected in the non-detection zone one side of smoke chamber with the PCB board, make the one side that the PCB board is close to the smoke chamber have sufficient mountable space, satisfy the components and parts single face and install on the PCB board, the PCB board is the processing requirement that single face paster was carried out to the single-sided board that can not only reduce manufacturing cost well, moreover can accord with the use chip mounter, do benefit to the batch production of PCB board equipment components and parts, thereby effectively promoted fire detector's production efficiency.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a fire detector of a single-sided assembly component of a PCB board according to the present embodiment;

fig. 2 is a schematic cross-sectional view of a fire detector of a single-sided assembly component of a PCB board according to the present embodiment;

fig. 3 is a schematic diagram of a split structure of a fire detector of a single-sided assembly component of a PCB board according to the present embodiment;

fig. 4 is a schematic diagram of a smoke chamber of a fire detector with a single-sided PCB board assembly component according to the present embodiment;

FIG. 5 is an enlarged view of FIG. 3A;

fig. 6 is a schematic diagram of a smoke chamber and a PCB board of a fire detector of a PCB board single-sided assembly component according to the present embodiment;

fig. 7 is a bottom view of a smoke chamber and a PCB of a fire detector of a single-sided assembly component of the PCB of the present embodiment.

Reference numerals illustrate:

1. a top cover; 2. a smoke chamber; 21. an insect prevention cover; 22. a photoelectric seat; 23. an epitaxial platform; 24 embedding a platform; 25. a connecting column; 26. a double-pipe installation groove; 27. a limiting platform; 3. a PCB board; 31. a double tube; 32. a component; 4. middle buckle; 5. a connection terminal; 6. and (5) a base.

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.

A fire detector for a single-sided PCB assembly component, referring to fig. 1-7, comprising: top cap 1, smoke chamber 2, PCB board 3 and base 6, smoke chamber 2 bottom one side subsides and sets up as the detection zone, the opposite side forms embedded platform 24 and regard as non-detection zone, PCB board 3 sets up in embedded platform 24's below, simultaneously, smoke chamber 2's bottom is equipped with spliced pole 25, the spliced pole 25 lower extreme is connected with PCB board 3, leave the interval between the bottom surface of PCB board 3 and embedded platform 24, the preferred interval height is (1 ~ 3) mm, components and parts 32 and double-barrelled 31 are installed to the one side of PCB board 3 towards smoke chamber 2, double-barrelled 31 stretches into in the detection zone of smoke chamber 2, the regional space department between the embedded platform 24 bottom of PCB board 3 and smoke chamber 2 is held to components and parts 32.

According to the scheme, the smoke chamber 2 is partially sunk and is divided into the detection area and the non-detection area, so that smoke particles in the environment can enter the smoke chamber 2 and then can be detected by the double pipes 31 in the detection area, the non-detection area can provide a space for embedding and installing the PCB 3, the detector is smaller in size, and the detector product structure is optimized.

Besides, through setting up spliced pole 25 fixed between PCB board 3 and the smoke chamber 2, unsettled in smoke chamber 2's non-detection area one side with PCB board 3 for the one side that PCB board 3 is close to smoke chamber 2 can provide sufficient accommodation area space to components and parts 32, thereby makes PCB board 3 satisfy the processing requirement that uses the chip mounter to carry out single face paster, does benefit to the mass production of PCB board 3 equipment components and parts, has effectively promoted the production efficiency of detector, and PCB board 3 is the single-sided board, can reduce manufacturing cost by a wide margin.

Referring to fig. 4, the smoke chamber 2 of the present embodiment is provided with a double-tube mounting groove 26, and a double-tube 31 is inserted into the detection area of the smoke chamber 2 through the double-tube mounting groove 26, and two side walls of the double-tube mounting groove 26 extend downward, so that the two sides of the double-tube 31 are served as a light barrier, and the light leakage prevention effect of the double-tube 31 can be improved even when the PCB 3 is not tightly attached to the bottom of the smoke chamber 2. In addition, the groove wall bottom surface that the double-barrelled mounting groove 26 downwardly extending forms spacing platform 27, and spacing platform 27's bottom surface surpasses in the bottom surface of embedding platform 24 to make PCB board 3 place the butt in spacing platform 24 bottom surface, carry out the welded fastening of spliced pole 25 again, thereby played the effect of assistance-localization real-time, promoted the packaging efficiency to PCB board 3. The space between the limiting platform 27 and the embedding platform 24 can provide a mounting accommodation space for the components 32.

Referring to fig. 5, a terminal 5 is mounted on a base 6, the terminal includes a terminal spring, the terminal spring is composed of a fixing portion, a pressing line portion and a clamping portion, which are connected with each other, the fixing portion is connected with the base, the pressing line portion is used for fixing the external circuit, the clamping portion is a clamping jaw capable of elastically deforming, the clamping jaw is used for clamping and fixing the upper surface and the lower surface of a PCB 3 and conducting a circuit, and the terminal 5 structure not only plays a role of conducting the circuit with the PCB 3, but also can improve connection stability of the PCB 3.

In addition, the fire detector structure preferably further comprises a middle buckle 4, the PCB 3 is arranged between the middle buckle 4 and the smoke chamber 2, the middle buckle 4 is used for fixing the smoke chamber 2 and the PCB 3 below the top cover 1, the middle buckle 4 not only plays a role in fixing the smoke chamber 2, but also contacts the surface of the PCB 3, deviating from the smoke chamber 2, with the middle buckle 4, so that the installation stability of the PCB 3 is further improved.

Referring to fig. 6 and 7, the smoking room 2 of the present embodiment includes a photoelectric seat 22 and an insect-proof cover 21, an extension platform 23 is provided at the top edge of the photoelectric seat 22, and the insect-proof cover 21 is fastened to the extension platform 23 and forms a smoking room 2 structure with the photoelectric seat 22. The design of the extension platform 23 can increase the sampling space of the smoke chamber 2 for environmental smoke, and the extension platform 23 is aligned with the edge of the PCB 3 part, so that a certain protection effect can be achieved on the edge of the PCB 3 arranged between the top cover 1 and the base 6. The height of the space between the bottom of the epitaxial platform 23 and the PCB 3 is preferably (5-10) mm, so that the components 32 on the PCB 3 can have enough accommodation space.

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

1. A fire detector for a single-sided PCB assembly component, comprising: top cap, smoke chamber, PCB board and base, smoke chamber bottom one side is sunk and is set up as the detection zone, and the opposite side forms the embedding platform and as non-detection zone, the PCB board set up in embedding platform below, its characterized in that, the smoke chamber bottom be equipped with the spliced pole, the spliced pole with the PCB board is connected, the PCB board with the interval is left to the embedding platform bottom surface, the PCB board orientation the components and parts and double-barrelled are installed to the one side of smoke chamber, double-barrelled stretch into to in the detection zone of smoke chamber, components and parts holding in PCB board with regional space department between the embedding platform.

2. The fire detector of the single-sided assembly component of the PCB of claim 1, wherein a space (1-3) mm high is reserved between the PCB and the bottom surface of the embedded platform.

3. The fire detector of the single-sided assembly component of the PCB of claim 1, wherein the bottom of the smoke chamber is provided with a limiting platform, and the PCB is abutted to the limiting platform.

4. The fire detector for the single-sided PCB assembly components and parts of claim 3, wherein the smoke chamber is provided with a double-tube mounting groove, the double tube is inserted into the detection area of the smoke chamber through the double-tube mounting groove, and the bottom surface of the groove wall of the double-tube mounting groove is used as the limiting platform.

5. The fire detector of claim 1, further comprising a middle buckle, wherein the middle buckle fixes the smoke chamber below the top cover, the PCB is disposed between the middle buckle and the smoke chamber, and a surface of the PCB facing away from the smoke chamber contacts with the surface of the middle buckle.

6. The fire detector of the single-sided assembly component of the PCB board according to claim 1, wherein the base is provided with a wiring terminal, the wiring terminal comprises a terminal spring plate, the terminal spring plate comprises a fixing part, a line pressing part and a clamping part which are mutually connected, the fixing part is connected with the base, the clamping part is a clamping jaw capable of elastically deforming, and the clamping jaw clamps and fixes the upper surface and the lower surface of the PCB board and conducts a circuit.

7. The fire detector of the single-sided PCB assembly component of claim 1, wherein the smoke chamber comprises a photoelectric seat and an insect prevention cover, an extension platform is arranged at the top of the photoelectric seat, and the insect prevention cover is buckled on the extension platform to form a smoke chamber structure with the photoelectric seat.

8. The fire detector for the single-sided assembly components of the PCB of claim 7, wherein a space (5-10) mm high is reserved between the bottom of the epitaxial platform and the PCB.