Infrared fire alarm button

Abstract

The utility model relates to an infrared fire-fighting alarm button, which comprises a shell, a PCB (printed circuit board) and an action window are arranged in the shell, the action window is positioned above the PCB, a window corresponding to the action window is arranged on the upper side surface of the shell, and the action window shields the window; an infrared transmitter and an infrared receiver are arranged on the upper side face of the PCB, and the transmitting end of the infrared transmitter is opposite to the receiving end of the infrared receiver; a partition rib is arranged on the lower side face of the action window, after the action window is pressed down in place, the partition rib is arranged between the infrared transmitter and the infrared receiver, and infrared connection between the infrared transmitter and the infrared receiver is blocked through the partition rib. According to the infrared fire alarm button, the infrared transmitter and the infrared receiver which are optical devices with good stability and reliability are adopted, the infrared fire alarm button with good stability and reliability and long service life is obtained, when the infrared fire alarm button is applied to the daily environment, the product function is effectively guaranteed, and the hidden danger and the risk of alarm failure when a fire disaster happens can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fire alarm devices, and more specifically to an infrared fire alarm button. Background Art

[0002] Fire alarms are usually installed in places where people frequently visit, such as walkways and stairwells. When a fire occurs, they can sound an alarm and flash lights to alert people on site. Fire alarms include automatic detection fire alarms and manual fire alarms to meet the operational requirements of different alarm scenarios. Automatic detection fire alarms can automatically detect smoke and issue an alarm. Manual fire alarms are generally used in conjunction with manual fire alarm buttons, which help people press the manual fire alarm button in time when they discover a fire, and then use the corresponding alarm device to issue a fire alarm prompt or call for help. Currently, manual fire alarm buttons on the market mainly use pure mechanical switches or contact-type metal shrapnel to achieve triggering and operation control. Pure mechanical switches are used in daily environments, and the mechanical materials in them are easily aged and damaged. Contact-type metal shrapnel is used in daily environments, and the metal shrapnel is easily corroded, resulting in poor contact. Both of these structural products are prone to product failure during use, posing a significant alarm hazard or risk in the event of a fire. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an infrared fire alarm button in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an infrared fire alarm button, comprising a shell, a PCB board and an action window are provided in the shell, the action window is located above the PCB board, and a window corresponding to the action window is provided on the upper side of the shell, and the action window is blocked at the window; an infrared transmitter and an infrared receiver are provided on the upper side of the PCB board, and the transmitting end of the infrared transmitter is opposite to the receiving end of the infrared receiver; a partition rib is provided on the lower side of the action window, and after the action window is pressed down into place, the partition rib is placed between the infrared transmitter and the infrared receiver, and the infrared connection between the infrared transmitter and the infrared receiver is blocked by the partition rib.

[0005] In some embodiments, a cover plate is further provided in the shell, and the cover plate is located between the PCB board and the action window; a slot is provided on the cover plate, and a partition extending vertically downward is provided at the front and rear edges of the slot, and a accommodating cavity is formed between the partitions and the slot on both sides, and two cover shells spaced apart on the left and right are provided in the accommodating cavity, and the tops of the two cover shells are both protruding upward and located outside the accommodating cavity; a facing hole is provided at the upper position of the opposite sides of the two cover shells, and the infrared transmitter and the infrared receiver are correspondingly placed in the two cover shells, and the transmitting end of the infrared transmitter and the receiving end of the infrared receiver correspond through the two facing holes.

[0006] In some embodiments, two first elastic support arms spaced apart from each other are provided on the rear side of the action window, and rear ends of the two first elastic support arms are both provided on the upper side of the cover plate.

[0007] In some embodiments, the rear ends of the two first elastic support arms are provided with a first protrusion on the outer sides facing away from each other, and two second protrusions are correspondingly provided at the rear position of the upper side of the cover plate. The two second protrusions are correspondingly provided with through grooves for the two first protrusions to fit into, and the two first protrusions are correspondingly installed in the two through grooves.

[0008] In some embodiments, a positioning block is provided at the center of the front side of the action window, and a snap block that engages with the positioning block is correspondingly provided at the front position of the upper side of the cover plate; after the action window is pressed down into place, the positioning block is pressed tightly against the bottom of the snap block.

[0009] In some embodiments, the buckle block is connected to the cover plate via a second elastic support arm.

[0010] In some embodiments, the first elastic support arm includes a first arm, a second arm and a third arm, and the first arm, the second arm and the third arm are integrally connected in sequence from front to back; the second arm is arranged at an angle, the first arm and the third arm are parallel to each other, and the angles formed between the second arm and the first arm and the third arm are all obtuse angles.

[0011] In some embodiments, the action window is further provided with two positioning through holes spaced apart from each other on the left and right sides, and the upper side of the cover plate is further provided with two positioning members which are correspondingly inserted into the two positioning through holes.

[0012] In some embodiments, the positioning member includes a positioning column, a limiting plate and a positioning seat, and the positioning column, limiting plate and positioning seat are integrally connected in sequence from top to bottom, and the central axis of the positioning column coincides with the central axis of the positioning seat; the cover plate is also provided with two hollow grooves spaced apart on the left and right, and the two positioning seats are correspondingly inserted into the two hollow grooves, and the two limiting plates are correspondingly limited and fitted on the upper side of the cover plate, and the two positioning columns are correspondingly inserted into the two positioning through holes.

[0013] In some embodiments, the upper side of the cover plate is further provided with two third protrusions spaced apart from each other on the left and right sides, and the two third protrusions are correspondingly located behind the two hollow grooves and close to the two second protrusions respectively.

[0014] The beneficial effects of the present invention are as follows: different from the prior art, the infrared fire alarm button of the present invention is provided with a PCB board and an action window in the shell, the PCB board is provided with an infrared transmitter and an infrared receiver, the transmitting end of the infrared transmitter is opposite to the receiving end of the infrared receiver; the lower side of the action window is provided with a partition rib, which blocks the infrared connection between the infrared transmitter and the infrared receiver; by using optical devices such as infrared transmitters and infrared receivers with good stability and reliability, an infrared fire alarm button with good stability and reliability and long service life is obtained. When used in daily environments, the product functions are effectively guaranteed, and the hidden dangers and risks of alarm failure when a fire occurs can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the exploded structure of the infrared fire alarm button in the embodiment of the present utility model;

[0016] Figure 2 Schematic cross-section of the infrared fire alarm button in normal state in the embodiment of the present utility model;

[0017] Figure 3 This is a cross-sectional schematic diagram of the infrared fire alarm button in the alarm state according to the embodiment of the present utility model;

[0018] Names and serial numbers in the figure: housing 1; PCB board 2; action window 3; infrared transmitter 4; infrared receiver 5; partition rib 31; window 101; upper housing 11; lower housing 12; cover plate 6; housing 61; counter-emission hole 601; first elastic support arm 32; first protrusion 320; second protrusion 62; through slot 620; first support arm 321; second support arm 322; third support arm 323; positioning block 33; snap block 63; second elastic support arm 631; positioning through hole 301; positioning column 71; limit plate 72; positioning seat 73; hollow slot 602; third protrusion 64. DETAILED DESCRIPTION

[0019] The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of the present invention are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0020] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] "Multiple" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0022] Moreover, the terms "up, down, front, back, left, right, upper end, lower end" and the like indicating directions are all based on the posture and position of the device or apparatus described in this solution during normal use.

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present utility model is implemented as follows Figures 1 to 3As shown in the figure, an infrared fire alarm button includes a shell 1, a PCB board 2 and an action window 3 are provided in the shell 1, the action window 3 is located above the PCB board 2, and a window 101 corresponding to the action window 3 is provided on the upper side of the shell 1, and the action window 3 is blocked at the window 101; an infrared transmitter 4 and an infrared receiver 5 are provided on the upper side of the PCB board 2, and the transmitting end of the infrared transmitter 4 is opposite to the receiving end of the infrared receiver 5; a partition rib 31 is provided on the lower side of the action window 3, and after the action window 3 is pressed down into place, the partition rib 31 is placed between the infrared transmitter 4 and the infrared receiver 5, and the infrared connection between the infrared transmitter 4 and the infrared receiver 5 is blocked by the partition rib 31.

[0025] The housing 1 comprises an upper shell 11 and a lower shell 12, with a window 101 provided in the upper shell 11. The infrared transmitter 4 and infrared receiver 5 are electrically connected to the PCB 2, respectively. The housing 1 has a cavity within it, and an action window 3 is provided within the cavity and located at the window 101, shielding the window 101 and facilitating the operator to press the action window 3 from the window 101. The infrared transmitter 4 and infrared receiver 5 are provided within the cavity, creating a dark chamber that facilitates infrared communication between the infrared transmitter 4 and infrared receiver 5. The PCB 2 should also be provided with a controller (not shown in the drawings) electrically connected to the infrared transmitter 4 and infrared receiver 5. The controller (not shown in the drawings) can be, for example, a main control MCU. In the event of a fire, pressing the action window 3 blocks the infrared connection between the infrared transmitter 4 and infrared receiver 5 via the partition rib 31. At this point, when the controller (not shown in the drawings) detects that the infrared connection between the infrared transmitter 4 and infrared receiver 5 has been disconnected, it can further control the corresponding alarm device (not shown in the drawings) to issue an alarm. The infrared transmitter 4 and the infrared receiver 5 have high reliability and long service life, and can effectively improve the performance and service life of the product.

[0026] It should be noted that the infrared fire alarm button of this embodiment can be integrated with the corresponding alarm device (not shown in the drawings) or provided separately. In actual application, the design and selection can be based on the actual application requirements, and this is not specifically limited in this embodiment. The structure of the corresponding alarm device (not shown in the drawings) is not shown in the drawings. In actual application, any existing suitable alarm device (not shown in the drawings) can be used to achieve the sound and / or flash alarm function, and this is not specifically limited in this embodiment.

[0027] In this embodiment, the housing 1 is further provided with a cover plate 6, positioned between the PCB 2 and the operating window 3. The cover plate 6 is larger than both the PCB 2 and the operating window 3. The cover plate 6 is provided with a slot, with vertically downwardly extending partitions at the front and rear edges of the slot. A receiving cavity is formed between the partitions and the slot. Within the receiving cavity are two spaced-apart housings 61, each with its top portion projecting upward and positioned outside the receiving cavity. Both housings 61 are hollow and have open bottoms, with their bottoms aligned with the bottoms of the partitions. Opposing apertures 601 are provided on the upper sides of opposing sides of the two housings 61. The infrared transmitter 4 and the infrared receiver 5 are positioned within the respective housings 61, with the transmitting end of the infrared transmitter 4 and the receiving end of the infrared receiver 5 correspondingly aligned through the two opposing apertures 601. Two first elastic support arms 32 are spaced apart on the rear side of the action window 3. The rear ends of the two first elastic support arms 32 are located on the upper side of the cover plate 6. The two first elastic support arms 32 provide a pressing support force for the action window 3. The provision of the cover plate 6 effectively protects the infrared emitter 4 and infrared receiver 5, ensuring a good seal in the key detection area and improving the stability and reliability of the infrared emitter 4 and infrared receiver 5.

[0028] In other embodiments, an opaque elastic seal (not shown in the drawings) is further provided between the opposing sides of the two housings 61 at a position above the cover plate 6. The opaque elastic seal (not shown in the drawings) seals the corresponding radiating holes 601 on the two housings 61 and the slot between the two housings 61. When the action window 3 is pressed, the opaque elastic seal (not shown in the drawings) is deformed by the partition rib 31, thereby achieving a change in the infrared detection state. While ensuring a partitioning effect, it also provides better protection for the infrared emitter 4 and the infrared receiver 5. The opaque elastic seal (not shown in the drawings) can be, for example, a housing structure made of black rubber material, and is not specifically limited in this embodiment as long as it can achieve a sealing effect.

[0029] Specifically, the rear ends of the two first elastic support arms 32 are each provided with a first protrusion 320 on their oppositely facing outer surfaces. Two corresponding second protrusions 62 are also provided at the rearward position of the upper side of the cover plate 6. Correspondingly, the two second protrusions 62 are spaced apart from each other. The two second protrusions 62 are each provided with a through slot 620 for the two first protrusions 320 to engage with. The two first protrusions 320 are correspondingly installed in the two through slots 620, achieving a detachable connection between the action window 3 and the cover plate 6, facilitating assembly and use.

[0030] In this embodiment, the first elastic support arm 32 includes a first arm 321, a second arm 322, and a third arm 323. The first arm 321, the second arm 322, and the third arm 323 are integrally connected in sequence from front to back. The second arm 322 is tilted, and the first and third arms 321, 323 are parallel to each other. The angles formed between the second arm 322, the first arm 321, and the third arm 323 are all obtuse. The front end of the first arm 321 is positioned on the rear side of the operating window 3. The first protrusion 320 is positioned on the outer side of the rear end of the third arm 323 for insertion into the through-slot 620, allowing the rear end of the third arm 323 to pass through the first protrusion 320 and into the corresponding position on the cover plate 6. The spacing between the two cover shells 61 is sufficient to allow the partition rib 31 to be inserted, thereby blocking the infrared connection between the infrared transmitter 4 and the infrared receiver 5.

[0031] Furthermore, in this embodiment, a positioning block 33 is provided at the central position of the front side of the action window 3, and a snap block 63 that engages with the positioning block 33 is correspondingly provided at the front position of the upper side of the cover plate 6. The snap block 63 is connected to the cover plate 6 via a second elastic support arm 631. The second elastic support arm 631 provides the snap block 63 with a certain degree of displacement ability, and enables the snap block 63 to engage with the positioning block 33 and generate a pressing force. Among them, the upper side of the snap block 63 used to achieve the snapping is set as an inclined surface and the inclined surface faces backward, so that the positioning block 33 can be smoothly pressed down and pressed tightly underneath it. After the action window 3 is pressed down into place, the positioning block 33 presses tightly against the bottom of the snap block 63, and there is no need to press the action window 3 all the time, which is simple and convenient to operate.

[0032] In this embodiment, the action window 3 is further provided with two positioning holes 301 spaced apart from each other, and the upper side of the cover plate 6 is further provided with two positioning members that are correspondingly inserted into the two positioning holes 301. Specifically, the positioning members include a positioning column 71, a limiting plate 72, and a positioning seat 73. The positioning column 71 is cylindrical, the limiting plate 72 is rectangular, and the positioning seat 73 is in the shape of a regular triangular pyramid. The positioning column 71, the limiting plate 72, and the positioning seat 73 are integrally connected from top to bottom, and the central axis of the positioning column 71 coincides with the central axis of the positioning seat 73. The cover plate 6 is further provided with two hollow grooves 602 spaced apart from each other, and the two positioning seats 73 are correspondingly inserted into the two hollow grooves 602. The two limiting plates 72 are correspondingly attached to the upper side of the cover plate 6, and the two positioning columns 71 are correspondingly inserted into the two positioning holes 301 to prevent the action window 3 from moving during the downward pressing process.

[0033] In this embodiment, the upper side of the cover plate 6 is further provided with two third protrusions 64 spaced apart from each other. The two third protrusions 64 are correspondingly located behind the two hollow grooves 602 and close to the two second protrusions 62 respectively, so as to limit the degree of downward pressure of the action window 3.

[0034] The embodiment of the utility model adopts optical devices such as infrared transmitters and infrared receivers with good stability and reliability to obtain an infrared fire alarm button with good stability and reliability and a long service life. When used in daily environments, the product functions are effectively guaranteed and the hidden dangers and risks of alarm failure when a fire occurs can be effectively avoided.

[0035] It should be understood that ordinary technical workers in this field can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. An infrared fire alarm button, characterized by: The invention comprises a shell, wherein a PCB board and an action window are provided in the shell, wherein the action window is located above the PCB board, and a window corresponding to the action window is provided on the upper side of the shell, wherein the action window is shielded at the window; an infrared transmitter and an infrared receiver are provided on the upper side of the PCB board, wherein the transmitting end of the infrared transmitter is opposite to the receiving end of the infrared receiver; and a partition rib is provided on the lower side of the action window, wherein after the action window is pressed down into place, the partition rib is placed between the infrared transmitter and the infrared receiver, thereby blocking the infrared connection between the infrared transmitter and the infrared receiver through the partition rib.

2. The infrared fire alarm button according to claim 1, characterized in that: A cover plate is also provided in the shell, and the cover plate is located between the PCB board and the action window; a slot is provided on the cover plate, and partitions extending vertically downward are provided at the front and rear edges of the slot, and an accommodating cavity is formed between the partitions and the slot on both sides, and two cover shells spaced apart on the left and right are provided in the accommodating cavity, and the tops of the two cover shells are both raised upward and located outside the accommodating cavity; opposing holes are provided at the upper positions of the opposite sides of the two cover shells, and the infrared transmitter and the infrared receiver are correspondingly placed in the two cover shells, and the transmitting end of the infrared transmitter and the receiving end of the infrared receiver correspond through the two opposing holes.

3. The infrared fire alarm button according to claim 2, characterized in that: The rear side of the action window is provided with two first elastic support arms spaced apart from each other on the left and right sides, and the rear ends of the two first elastic support arms are both arranged on the upper side of the cover plate.

4. The infrared fire alarm button according to claim 3, characterized in that: The rear ends of the two first elastic support arms are provided with a first protrusion on the outer sides facing away from each other, and two second protrusions are correspondingly provided at the rear position of the upper side of the cover plate. The two second protrusions are correspondingly provided with through grooves for the two first protrusions to fit into, and the two first protrusions are correspondingly installed in the two through grooves.

5. The infrared fire alarm button according to claim 3, characterized in that: A positioning block is provided at the center of the front side of the action window, and a buckle block that engages with the positioning block is correspondingly provided at the front position of the upper side of the cover plate; after the action window is pressed down into place, the positioning block is tightly pressed under the buckle block.

6. The infrared fire alarm button according to claim 5, characterized in that: The buckle block is connected to the cover plate via a second elastic support arm.

7. The infrared fire alarm button according to any one of claims 3 to 6, characterized in that: The first elastic support arm includes a first arm, a second arm and a third arm, and the first arm, the second arm and the third arm are integrally connected in sequence from front to back; the second arm is arranged at an angle, the first arm and the third arm are parallel to each other, and the angles formed between the second arm and the first arm and the third arm are all obtuse angles.

8. The infrared fire alarm button according to claim 2, characterized in that: The action window is further provided with two positioning through holes spaced apart from each other on the left and right sides, and the upper side surface of the cover plate is further provided with two positioning pieces which are correspondingly inserted into the two positioning through holes.

9. The infrared fire alarm button according to claim 8, characterized in that: The positioning part includes a positioning column, a limiting plate and a positioning seat. The positioning column, limiting plate and positioning seat are integrally connected in sequence from top to bottom, and the central axis of the positioning column coincides with the central axis of the positioning seat; the cover plate is also provided with two hollow grooves spaced apart on the left and right, the two positioning seats are correspondingly inserted into the two hollow grooves, the two limiting plates are correspondingly limited and fitted on the upper side of the cover plate, and the two positioning columns are correspondingly inserted into the two positioning through holes.

10. The infrared fire alarm button according to claim 9, characterized in that: The upper side surface of the cover plate is further provided with two third protrusions spaced apart from each other on the left and right sides. The two third protrusions are correspondingly located behind the two hollow grooves and are respectively close to the two second protrusions.

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