Smoke sensor, housing and smoke alarm device

Abstract

This application provides a smoke sensor, a housing, and a smoke alarm device. The smoke sensor housing includes a cover and a base. The cover includes multiple fixing parts. The base is used to connect to the cover. The base has at least two tube receiving cavities for accommodating a transmitting tube and a receiving tube, respectively, and a fixing hole near each tube receiving cavity. Each fixing hole accommodates a bending device for inserting to bend the pin of the transmitting tube or receiving tube located in the corresponding tube receiving cavity, and / or for the fixing parts to pass through and abut against the transmitting tube or receiving tube located in the corresponding tube receiving cavity. The smoke sensor is connected to a main module, which is configured to send a control command to an alarm module when the detection signal meets the alarm conditions.

Description

Technical Field

[0001] This utility model relates to the field of security technology, specifically to a smoke sensor, a housing, and a smoke alarm device. Background Technology

[0002] With the improvement of living standards and the increasing number of public activity venues, the amount of electricity and fire used is large, and the frequency of accidental fires is also increasing, posing many safety hazards. At present, most places adopt the method of installing smoke alarm devices to detect the occurrence of fires in a timely manner and to promptly remind the public to evacuate.

[0003] However, due to structural design or assembly process issues, the smoke sensor in the smoke alarm device may experience unstable signal transmission. This is mostly because the position of the transmitting tube and / or receiving tube has become loose, or even detached from the tube housing. Therefore, it may cause safety hazards such as false alarms and functional failure.

[0004] Meanwhile, most existing smoke sensors involve manually bending the pins of the transmitter and receiver tubes to connect them to the circuit board after the transmitter and receiver tubes are installed in the housing, or bending the pins of the transmitter and receiver tubes first before installing them into the smoke sensor housing. This process is complex and reduces efficiency.

[0005] Therefore, existing smoke sensor designs suffer from complex installation procedures and the inability to assemble fully automatically; furthermore, after long-term use, there is a problem of not being able to guarantee stable signal transmission. Utility Model Content

[0006] The present invention aims to provide a smoke sensor to solve the problems of unstable signal transmission and complex installation procedures in the prior art.

[0007] In a first aspect, a smoke sensor housing includes a cover having a plurality of fixing portions; and a base configured to be connected to the cover; wherein the base has at least two tube receiving cavities for receiving a transmitting tube and a receiving tube respectively, and fixing holes located near each tube receiving cavity, wherein each fixing hole is configured to receive a bending device for inserting to bend the pin of the transmitting tube or receiving tube located in the corresponding tube receiving cavity, and / or for the fixing portions to pass through and abut against the transmitting tube or receiving tube located in the corresponding tube receiving cavity.

[0008] The fixing holes can be straight, cross-shaped, round, square, or triangular.

[0009] The fixing hole includes a limiting hole and a connecting hole. The connecting hole is used for the fixing part to pass through, and the limiting hole is used for the bending device to pass through.

[0010] The limiting hole and connecting hole are limited to cross-shaped fixing holes.

[0011] The limiting hole and connecting hole are designed to extend through the base in a direction perpendicular to the base plane.

[0012] The base has a protruding connection that communicates with each tube receiving cavity, and a corresponding fixing hole located in the protruding connection.

[0013] Each protruding connector includes a protrusion, and the cover includes a snap-fit ​​element corresponding to each protruding connector, which engages with the protrusion.

[0014] Each fixing part is integrally formed with the inner wall of the cover and extends towards the base.

[0015] The cover includes multiple ribs arranged circumferentially around the inner wall and has smoke inlet channels that communicate with the outside air formed between adjacent ribs.

[0016] The fixing part is located near the rib, integrally formed with the rib, or connected to the side of the rib.

[0017] In a second aspect, a smoke sensor includes a smoke sensor housing, at least one transmitting tube and at least one receiving tube located in a tube receiving cavity; wherein a corresponding fixing portion extends through a corresponding fixing hole and abuts against the transmitting tube or the receiving tube located in the corresponding tube receiving cavity.

[0018] Thirdly, a smoke alarm device includes: a main control module and an alarm module connected to the main control module; a smoke sensor connected to the main control module for transmitting a detection signal to the main control module; and the main control module for issuing a control command to the alarm module when the detection signal meets the alarm conditions.

[0019] The above aspects have many effects:

[0020] By providing multiple fixing parts to the cover and fixing holes to the base, the fixing parts can pass through the fixing holes and abut against the transmitting tube and the receiving tube. In this way, the transmitting tube and the receiving tube can be supported, preventing the transmitting tube from falling out of the transmitting tube cavity and the receiving tube from falling out of the receiving tube cavity, thereby ensuring the stability of signal transmission and improving the detection accuracy of the smoke sensor.

[0021] Meanwhile, the fixing hole is also used to allow the bending device to pass through the hole and bend the pins of the transmitting tube and receiving tube, so as to realize the automatic assembly of the smoke sensor and improve the assembly efficiency. Attached Figure Description

[0022] The accompanying drawings are described in further detail below.

[0023] Figure 1 This is a cross-sectional view of a smoke sensor.

[0024] Figure 2 Different cross-sectional views of a smoke sensor;

[0025] Figure 3 This is a schematic diagram of the internal structure of a smoke sensor;

[0026] Figure 4 This is a schematic diagram of the base of the smoke sensor;

[0027] Figure 5 This is a schematic diagram of the cover of the smoke sensor.

[0028] Reference numerals: Cover 1; Fixing part 11; Base 2; Transmitter tube receiving cavity 21; Transmitter port 211; Transmitter mounting port 212; Receiver tube receiving cavity 22; Receiver port 221; Receiver mounting port 222; First fixing hole 23; First limiting hole 231; First connecting hole 232; Second fixing hole 24; Second limiting hole 241; Second connecting hole 242; First connecting part 25; First fixing cavity 251; Second connecting part 26; Second fixing cavity 261; Transmitter tube 3; Transmitter tube pin 31; Receiver tube 4; Receiver tube pin 41; Protrusion 5; Snap-fit ​​part 6; Rib 9; First bending part 91; Second bending part 92. Detailed Implementation

[0029] In the following description, the terms "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is conventionally placed during use. These are non-limiting and used for ease of description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the terms "first," "second," etc., are used only to distinguish features and do not indicate or imply relative importance.

[0030] Figure 1-3 The smoke sensor shown includes a cover 1, a base 2, an emitter 3, and a receiver 4. The cover 1 and base 2 are for illustrative purposes only; in actual installation, the cover 1 may be positioned above the base 2, or vice versa.

[0031] Multiple fixing parts 11 are provided on the top of the inner wall of the cover 1.

[0032] The base 2 is connected to the cover 1. The base 2 is provided with at least two tube receiving cavities, which are used to accommodate the transmitting tube 3 and the receiving tube 4 respectively, as well as fixing holes provided near each tube receiving cavity.

[0033] Each fixing hole is used to accommodate a bending device, which is inserted to bend the pin 31 of the transmitting tube or the pin 41 of the receiving tube located in the corresponding tube receiving cavity, and / or to allow the fixing part 11 to pass through and abut against the transmitting tube 3 or the receiving tube 4 located in the corresponding tube receiving cavity.

[0034] In one embodiment, the tube receiving cavity includes a transmitting tube receiving cavity 21 for accommodating the transmitting tube 3 and a receiving tube receiving cavity 22 for accommodating the receiving tube 4, and the fixing hole includes a first fixing hole 23 and a second fixing hole 24, with the first fixing hole 23 disposed near the transmitting tube receiving cavity 21 and the second fixing hole 24 disposed near the receiving tube receiving cavity 22.

[0035] The transmitting tube 3 is disposed in the transmitting tube receiving cavity 21, and the receiving tube 4 is disposed in the receiving tube receiving cavity 22.

[0036] The first fixing hole 23 is used to bend the pin 31 of the transmitting tube after the bending device (not shown) is inserted, and / or to allow the fixing part 11 to pass through and abut against the transmitting tube 3. The second fixing hole 24 is used to bend the pin 41 of the receiving tube after the bending device (not shown) is inserted, and / or to allow the fixing part 11 to pass through and abut against the receiving tube 4.

[0037] In one embodiment, there may be one transmitting tube cavity 21 and one receiving tube cavity 22, one first fixing hole 23, one second fixing hole 24, and two fixing parts 11, which pass through the first fixing hole 23 and the second fixing hole 24 respectively to fix the transmitting tube 3 and the receiving tube 4 in place.

[0038] In another embodiment ( Figure 4 There can be two transmitting tube accommodating cavities 21, one receiving tube accommodating cavity 22, two first fixing holes 23, one second fixing hole 24, and three fixing parts 11, which pass through the first fixing hole 23 and the second fixing hole 24 respectively to fix the two transmitting tubes 3 and one receiving tube 4 in place.

[0039] In this embodiment, by providing a fixing part 11 on the cover 1 and opening a first fixing hole 23 and a second fixing hole 24 on the base 2, the first fixing hole 23 and the second fixing hole 24 are adapted to the corresponding fixing part 11. By having the fixing part 11 pass through the first fixing hole 23 and the second fixing hole 24 and abut against the tail of the transmitting tube 3 or the receiving tube 4, support is provided for the transmitting tube 3 or the receiving tube 4, preventing it from falling out of the corresponding transmitting tube receiving cavity 21 or the receiving tube receiving cavity 22, thereby improving the structural stability of the smoke sensor, further improving the stability of signal transmission, and improving the detection accuracy of the smoke sensor.

[0040] Meanwhile, the first fixing hole 23 is also used for bending the pin 31 of the transmitting tube after a bending device (not shown) passes through, and the second fixing hole 24 is also used for bending the pin 41 of the receiving tube after a bending device (not shown) passes through. Thus, the pin bending process can be performed by the bending device during the smoke sensor assembly process, thereby achieving fully automated assembly of the smoke sensor. This fully automated assembly process improves work efficiency. Fully automated assembly also enhances the connection stability between the circuit board and the transmitting tube 3 and receiving tube 4, further improving the stability of the smoke sensor signal transmission.

[0041] In the above embodiments, the ends of the fixing part 11 are respectively provided corresponding to the first fixing hole 23 and the second fixing hole 24. In one embodiment, the shapes of the first fixing hole 23 and the second fixing hole 24 can be straight, cross-shaped, circular, square or triangular, and correspondingly, the shape of the fixing part 11 can be straight, cross-shaped, circular, square or triangular.

[0042] In one embodiment, the first fixing hole 23 includes a first limiting hole 231 and a first connecting hole 232, the first connecting hole 232 is for the fixing part 11 to pass through, and the first limiting hole 231 is for the bending device to pass through.

[0043] This embodiment, by setting a first limiting hole 231, enables the bending device to bend the pin 31 of the emission tube during the fully automatic assembly of the smoke sensor, and bend the pin 31 of the emission tube to be perpendicular to the surface of the base 2 (i.e., the plane of the base) so that it can be connected to the circuit board, and prevent the pin 31 of the emission tube from tilting up, thereby further improving the stability of signal transmission.

[0044] In one embodiment, such as Figure 3 As shown, the first limiting hole 231 is a straight hole, the first connecting hole 232 is a straight hole, and the first limiting hole 231 and the first connecting hole 232 together form a cross-shaped hole, that is, the first fixing hole 23 is cross-shaped. The extension direction of the first limiting hole 231 is perpendicular to the plane containing the central axis of the transmitting tube 3, and the extension direction of the first connecting hole 232 is in the plane containing the central axis of the transmitting tube 3.

[0045] The central axis of the emitter tube 3 is the center line of the trajectory of the electron beam inside the emitter tube 3.

[0046] In another embodiment, the first limiting hole 231 and the first connecting hole 232 extend through the base 2 in a direction perpendicular to the base plane (vertically set) to improve the accuracy of bending the pin 31 of the transmitting tube.

[0047] In other embodiments, the first limiting hole 231 and the first connecting hole 232 may be arranged parallel to each other.

[0048] The first limiting hole 231 can be set as a circular, square or polygonal structure, as long as it can be adapted to the bending device to bend the pin 31 of the transmitting tube.

[0049] In one embodiment, the second fixing hole 24 includes a second limiting hole 241 and a second connecting hole 242.

[0050] The second fixing hole 24, the second limiting hole 241, and the second connecting hole 242 can be configured in a manner corresponding to the first fixing hole 23, the first limiting hole 231, and the first connecting hole 232 described above.

[0051] In other embodiments, the first fixing hole 23 and the second fixing hole 24 may also be straight holes, and the extension direction of the first fixing hole 23 is perpendicular to the central axis of the transmitting tube 3, and the extension direction of the second fixing hole 24 is perpendicular to the central axis of the receiving tube 4 (not shown in the figure). The shape of the end of the fixing part 11 matches the shape of the straight hole and is also a straight structure.

[0052] In other embodiments, the first fixing hole 23 and the second fixing hole 24 may also be straight holes, and the extension direction of the first fixing hole 23 is in the same plane as the central axis of the transmitting tube 3, and the extension direction of the second fixing hole 24 is in the same plane as the central axis of the receiving tube 4 (not shown in the figure). The end of the fixing part 11 extends into the first fixing hole 23 and the second fixing hole 24, and the shape of the end of the fixing part 11 matches the shape of the straight hole, so that it can be directly aligned with the transmitting tube 3 and the receiving tube 4 and be precisely fixed to them.

[0053] In one embodiment, the fixing part 11 is integrally formed with the inner wall of the cover 1, and the end of the fixing part 11 extends toward the base 2.

[0054] By setting the fixing part 11 as an integral part of the cover 1, the assembly cost can be reduced.

[0055] In one embodiment, the launch tube receiving cavity 21 is disposed on the base 2 at an angle to the plane of the base, and the launch tube receiving cavity 21 includes a launch port 211 and a mounting port 212. Figure 1 and Figure 3 The launch port 211 is located on the side of the base 2 facing the cover 1, and the mounting port 212 on the opposite side is located on the side of the base 2 away from the cover 1. The first fixing hole 23 is located on the base 2 and is above the mounting port 212.

[0056] Similarly, the receiving tube cavity 22 can be inclinedly disposed on the base 2, and the receiving tube cavity 22 has a corresponding receiving port 221 and mounting port 222.

[0057] The above embodiment allows the bending process of the pins of the transmitting tube 3 and the receiving tube 4 to be completed during the assembly of the smoke sensor by directly opening the first fixing hole 23 and the second fixing hole 24 on the base 2, thereby saving manpower and resources and reducing costs.

[0058] The fully automated assembly of the smoke sensor mainly includes the following steps: the automatic assembly machine installs the emitting tube 3 into the emitting tube receiving cavity 21 and the receiving tube 4 into the receiving tube receiving cavity 22; the bending device bends the pins of the emitting tube 3 and the receiving tube 4 through the first fixing hole 23 and the second fixing hole 24; the automatic assembly machine assembles the cover 1 and the base 2 through the protrusion 5 and the snap-fit ​​6 to complete the assembly of the smoke sensor.

[0059] like Figure 1-2 See Figure 4-5 In another embodiment, the base 2 is further provided with a first connecting part 25 and a second connecting part 26, the first connecting part 25 being connected to the transmitting tube receiving cavity 21, and the second connecting part 26 being connected to the receiving tube receiving cavity 22.

[0060] Specifically, a first fixing cavity 251 is formed in the first connecting part 25. The first fixing cavity 251 is connected to the transmitting tube receiving cavity 21. The pin 31 of the transmitting tube is located in the first fixing cavity 251 to protect the pin 31 of the transmitting tube.

[0061] A second fixing cavity 261 is formed inside the second connecting part 26, and the second fixing cavity 261 is connected to the receiving tube receiving cavity 22; the pin 41 of the receiving tube is located inside the second fixing cavity 261 to protect the pin 41 of the receiving tube.

[0062] In the above embodiment, the first fixing hole 23 is located in the first connecting part 25 and communicates with the first fixing cavity 251; the second fixing hole 24 is located in the second connecting part 26 and communicates with the second fixing cavity 261.

[0063] By setting a first connecting part 25 and a second connecting part 26, and setting a first fixing hole 23 in the first connecting part 25 and a second fixing hole 24 in the second connecting part 26, the stability of the base 2 structure is improved.

[0064] In one embodiment, the sidewalls of the first connecting portion 25 and the second connecting portion 26 are provided with protrusions 5, and the sidewalls of the cover 1 are provided with snap-fit ​​members 6. The protrusions 5 are snapped into the snap-fit ​​members 6 to provide a detachable connection between the cover 1 and the base 2.

[0065] In another embodiment, the side wall of the base 2 is provided with a plurality of protrusions 5, and the side wall of the cover 1 is provided with a plurality of snap-fit ​​pieces 6. The plurality of protrusions 5 and the plurality of snap-fit ​​pieces 6 are provided in a one-to-one correspondence, and the plurality of protrusions 5 are snapped into the plurality of snap-fit ​​pieces 6.

[0066] The aforementioned snap-fit ​​6 can be disposed on at least a portion of the side wall of the cover 1, or it can extend away from the base 2 until it is connected to the top wall of the cover 1, that is, covering the entire height of the cover 1, so as to improve the stability of the connection between the cover 1 and the base 2.

[0067] These embodiments connect the cover 1 and the base 2 by setting protrusions 5 and snap-fit ​​parts 6, which facilitates installation and makes it easier to repair and replace the components inside the smoke sensor.

[0068] In one embodiment, the inner wall of the cover 1 is provided with a plurality of ribs 9, which are spaced apart and form a smoke inlet channel between adjacent ribs 9, so that the smoke inlet channel is connected to the outside atmosphere.

[0069] Correspondingly, multiple smoke inlets are provided on the side wall of the cover 1. The smoke inlets are connected to the smoke inlet channel to allow smoke from the outside atmosphere to flow into the smoke sensor.

[0070] Smoke enters the smoke sensor through the smoke inlet channel and flows into the detection area. At this time, the light emitted by the emitting tube 3 into the detection area is reflected or scattered by the smoke particles and received by the receiving tube 4.

[0071] Rib 9 also serves to prevent ambient light from directly entering the smoke sensor.

[0072] In one embodiment, the fixing part 11 is disposed close to the rib 9, and the rib 9 includes a first bending part 91 and a second bending part 92, with an included angle between the first bending part 91 and the second bending part 92.

[0073] When ambient light enters the cover 1 through the smoke inlet, it is reflected onto the adjacent rib 9 at the aforementioned angle. This avoids the problem of increased noise signal caused by ambient light directly passing through and entering the detection area of ​​the smoke sensor. In addition, the fixing part 11 also has a certain function of blocking ambient light.

[0074] In one embodiment, one side of the first bend 91 is connected to the inner wall of the side of the cover 1, and the second bend 92 is connected to the other side of the first bend 91.

[0075] In one embodiment, the fixing part 11 is located on the side of the rib 9, and the end of the fixing part 11 extends toward the bottom of the base 2.

[0076] In another embodiment, the fixing part 11 is located on the side of the second bent part 92, and the end of the fixing part 11 extends toward the bottom of the base 2.

[0077] In another embodiment, the fixing part 11 and the rib 9 are integrally formed. Making the fixing part 11 and the rib 9 integrally formed can reduce assembly costs.

[0078] In another embodiment, the fixing part 11 is connected to one side of the rib 9. By making the fixing part 11 and the rib 9 interconnected, it is convenient to assemble and disassemble the fixing part 11 and the rib 9.

[0079] In one embodiment, combined with Figure 4 and Figure 5 As shown, when the base 2 is provided with a first connecting part 25 and a second connecting part 26, the length of the rib 9 near the first connecting part 25 and the second connecting part 26 is less than the length of the other ribs 9, so as to prevent the setting of the ribs 9 from affecting the connection or connection strength between the protrusion 5 and the snap fastener 6.

[0080] In another embodiment, the lengths of the ribs 9 can be equal or unequal, as long as they can effectively guide the smoke and prevent ambient light from entering.

[0081] In one embodiment, the smoke sensor may further include an insect-proof net (not shown in the figure), which surrounds the outer wall of the cover 1 to prevent insects from entering the smoke sensor. To simplify the structure, the insect-proof net may also be integrally formed with the cover 1, with holes in the net providing smoke inlets. In another embodiment, the insect-proof net is integrally formed with the cover 1, with holes in the net providing smoke inlets, and another metal insect-proof net is also fitted around the outer wall of the integrally formed net. The arrangement of the two insect-proof nets reduces the aperture size through which insects enter the smoke sensor, improving the insect-proof effect.

[0082] A smoke alarm device (not shown in the figure) is also provided, including a housing, a main control module, a smoke sensor and an alarm module.

[0083] The main control module, smoke sensor, and alarm module are all housed inside the casing.

[0084] The smoke sensor is the smoke sensor provided in the above embodiment, used to transmit detection signals to the main control module.

[0085] After receiving the detection signal, the main control module makes a judgment. When the detection signal meets the alarm conditions, it sends the corresponding control command to the alarm module.

[0086] Specifically, in one embodiment, when the detection signal is determined to be greater than a threshold, a corresponding control command is sent to the alarm module.

[0087] In one embodiment, the main control module can be implemented using hardware circuits such as a comparator.

[0088] The alarm module is connected to the main control module and is used to receive control commands and issue alarms.

[0089] In the description, unless otherwise explicitly specified and limited, the terms “setup” and “connection” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0090] The above description is merely a non-limiting embodiment of this application. Various modifications and changes are possible within the scope of this application.

Claims

1. A smoke sensor housing characterized by, include: The cover includes multiple fixing parts; A base for connecting the cover; The base is provided with at least two tube receiving cavities, which are used to accommodate the transmitting tube and the receiving tube respectively, as well as a fixing hole provided near each of the tube receiving cavities; Each of the fixing holes is used to accommodate a bending device for insertion to bend the pin of the transmitting tube or receiving tube located in the corresponding tube receiving cavity, and / or for the fixing part to pass through and abut against the transmitting tube or receiving tube located in the corresponding tube receiving cavity.

2. The smoke sensor housing of claim 1, wherein, The fixing hole can be a straight hole, a cross-shaped hole, a circle, a square, or a triangle.

3. The smoke sensor housing of claim 1, wherein, Each of the fixing holes includes a limiting hole for the bending device to pass through and a connecting hole for the fixing part to pass through.

4. The smoke sensor housing of claim 3, wherein, The limiting hole and the connecting hole are defined as cross-shaped fixing holes.

5. The smoke sensor housing of claim 3, wherein, The limiting hole and the connecting hole extend through the base in a direction perpendicular to the plane of the base.

6. The smoke sensor housing of claim 1, wherein, The base has a protruding connecting portion that communicates with each tube receiving cavity, and the corresponding fixing hole is located in the protruding connecting portion.

7. The smoke sensor housing of claim 6, wherein, Each protruding connection includes a protrusion, and the cover includes a snap-fit ​​element corresponding to each of the protruding connections, the snap-fit ​​element engaging with the protrusion.

8. The smoke sensor housing of claim 1, wherein, The fixing part is integrally formed with the inner wall of the cover and extends towards the base.

9. The smoke sensor housing according to claim 1, characterized in that, The cover includes a plurality of ribs arranged around the inner wall, and a smoke inlet channel is formed between adjacent ribs, the smoke inlet channel being connected to the outside air.

10. The smoke sensor housing of claim 9, wherein, The fixing part is located near the rib.

11. The smoke sensor housing of claim 10, wherein, Each of the fixing parts is integrally formed with the rib strip.

12. The smoke sensor housing of claim 10, wherein, Each of the fixing parts is connected to one side of the rib.

13. The smoke sensor housing of claim 1, wherein, It includes three tube-receiving cavities, two of which are configured to accommodate corresponding transmitting tubes, and one of which is configured to accommodate a receiving tube.

14. A smoke sensor, comprising: It includes a smoke sensor housing as described in any one of claims 1-13, at least one transmitting tube and at least one receiving tube located in the tube receiving cavity; wherein a corresponding fixing part extends through a corresponding fixing hole and abuts against the transmitting tube or receiving tube located in the corresponding tube receiving cavity.

15. A smoke alarm device, characterized in that include: The main control module and the alarm module connected to the main control module; The smoke sensor of claim 14 is connected to the main control module and is used to transmit a detection signal to the main control module; The main control module is used to send a control command to the alarm module when the detection signal meets the alarm conditions.

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