Fire detector

Abstract

The utility model belongs to the technical field of fire fighting, and discloses a fire detector which comprises a shell, a protection device and a detection device. The shell forms a space for accommodating the protection device and the detection device, protects the protection device and the detection device and prevents dust from polluting the protection device and the detection device, and the shell is provided with a first section, a second section and a third section which are detachably connected in sequence and can be respectively or simultaneously mounted and dismounted. The protection device is arranged in the third section, the detection device is arranged in the first section, and when the detection device and the protection device are maintained, the first section and the third section can be detached respectively, so that the detection device and the protection device do not influence each other, the convenience of installation and detachment is improved, the maintenance difficulty is reduced, and the maintenance efficiency is improved. The detection device and the protection device are connected through the electric wire, signal transmission between the detection device and the protection device can be achieved, the detection device and the protection device can be independently installed and detached and can be independently replaced, and later maintenance of the fire detector is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection, in particular to a fire detector. Background Art

[0002] Fire detectors are an indispensable component of automatic fire alarm systems. They monitor physical quantities such as temperature, smoke, gas and radiation light intensity in the environment. Once characteristic physical quantities of fire are detected, they will immediately convert them into electrical signals and send alarm signals, thereby achieving early warning of fire and preventing losses.

[0003] Existing fire detectors can determine whether a fire has occurred in an area covered by the lens or assist personnel in determining the starting point of a fire by providing a lens assembly and a circuit board.

[0004] However, existing fire detectors have a complex structure, with internal circuit boards stacked on top of each other and a compact structure. This causes the circuit boards to affect each other during installation and removal, increasing the difficulty of installation and removal, reducing production efficiency, and hindering the subsequent maintenance of fire detectors. Utility Model Content

[0005] The purpose of the utility model is to provide a fire detector that can be easily installed and disassembled during later maintenance.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A fire detector is provided, comprising:

[0008] A housing having a first section, a second section, and a third section that are detachably connected in sequence;

[0009] a protective device, the protective device being arranged inside the third section;

[0010] A detection device is provided inside the first section, and the detection device is connected to the protective device by an electric wire.

[0011] As a preferred embodiment of the fire detector, the fire detector further comprises a support stud, which is installed in the second section and extends into the interior of the third section, and the protective device is installed at one end of the support stud extending into the interior of the third section.

[0012] As a preferred embodiment of the above-mentioned fire detector, the detection device includes:

[0013] a circuit board fixed to the second section;

[0014] a circuit module, the circuit module being disposed on a side of the circuit board facing away from the second section, the circuit board being electrically connected to the circuit module;

[0015] A lens assembly is provided on a side of the circuit module facing away from the circuit board. The circuit module and the lens assembly are electrically connected. The lens assembly is used for fire imaging.

[0016] As a preferred solution of the above-mentioned fire detector, the fire detector further includes a mounting bracket installed on the second section, the mounting bracket extends to a side away from the protective device, and the detection device is installed on a side of the mounting bracket away from the protective device.

[0017] As a preferred solution of the above-mentioned fire detector, the shell is closed, and the second section is provided with a mounting plate to separate the interior of the shell into a closed first mounting cavity and a second mounting cavity, the protective device is located in the first mounting cavity, and the detection device is located in the second mounting cavity.

[0018] As a preferred solution of the above-mentioned fire detector, a sealing member is provided at the joint between the first section and the second section and at the joint between the second section and the third section to seal the gap.

[0019] As a preferred solution of the above fire detector, the first section and the second section, and the second section and the third section are threadedly connected.

[0020] As a preferred solution of the above-mentioned fire detector, the fire detector further comprises a panel, which is arranged inside the first section and is provided with an indicator light for alarm display.

[0021] As a preferred solution of the above fire detector, the fire detector further includes a tail wire, one end of which is electrically connected to the protective device, and the other end of which is used to connect to an external device.

[0022] As a preferred solution of the above-mentioned fire detector, a waterproof connector is provided on the housing, and the tail wire passes through the waterproof connector to connect to an external device.

[0023] Beneficial effects of the utility model:

[0024] The fire detector of the present invention includes a shell, a protective device and a detection device. The shell forms a space for accommodating the protective device and the detection device, protecting the protective device and the detection device and preventing them from being contaminated by dust. The shell has a first section, a second section and a third section that are detachably connected in sequence and can be installed and removed separately or simultaneously. The protective device is arranged in the second section and extends to the inside of the third section, and the detection device is arranged in the second section and extends to the inside of the first section. When maintaining the detection device and the protective device, the first section and the third section can be removed separately, so that the detection device and the protective device do not affect each other, which improves the convenience of installation and disassembly, reduces the difficulty of maintenance, and improves maintenance efficiency. The detection device and the protective device are connected by wires, which can realize the transmission of signals between the detection device and the protective device, and the detection device and the protective device can be installed and removed separately, and can be replaced separately, which is beneficial to the later maintenance of the fire detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an exploded view of the structure of the fire detector provided by the embodiment of the utility model;

[0026] Figure 2 This is an axonometric diagram of a fire detector provided by an embodiment of the present utility model;

[0027] Figure 3 This is a schematic structural diagram of a fire detector provided by an embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the mounting bracket structure provided by an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of the panel structure provided by an embodiment of the present utility model;

[0030] Figure 6 It is a partial cross-sectional view of the fire detector provided by the embodiment of the utility model.

[0031] In the picture:

[0032] 1. Housing; 11. First section; 111. Window; 12. Second section; 121. Grounding hole; 122. Waterproof connector; 123. Plug; 124. Mounting threaded hole; 125. First mounting hole; 126. Threading hole; 13. Third section; 2. Protective device; 3. Detection device; 31. Circuit board; 32. Circuit module; 33. Lens assembly; 4. Support studs; 5. Mounting bracket; 51. Second mounting hole; 52. Third mounting hole; 53. Fourth mounting hole; 54. Cable trough; 6. Panel; 61. Indicator hole; 62. Fifth mounting hole; 63. Lens hole; 64. Positioning hole; 65. Silk screen; 7. Tail wire. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0034] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0037] like Figure 1 As shown, this embodiment provides a fire detector comprising a housing 1, a protective device 2, and a detection device 3. The housing 1 comprises a first section 11, a second section 12, and a third section 13, which are detachably connected in sequence. The protective device 2 is disposed within the third section 13, and the detection device 3 is disposed within the first section 11. The detection device 3 and the protective device 2 are connected by wires.

[0038] Specifically, the housing 1 forms a space for accommodating the protective device 2 and the detection device 3, which is used to protect the protective device 2 and the detection device 3 from dust contamination. The housing 1 is elongated and has a first section 11, a second section 12, and a third section 13 along its length, which can be installed and removed separately or simultaneously. The protective device 2 is disposed within the third section 13 and can receive and transmit fire signals and issue control signals. The detection device 3 is disposed within the first section 11. The protective device 2 and the detection device 3 are spaced apart. When maintaining the detection device 3 and the protective device 2, the first section 11 and the third section 13 can be removed separately, so that the detection device 3 and the protective device 2 do not affect each other. This improves the convenience of installation and removal, reduces the difficulty of maintenance, and improves maintenance efficiency. The detection device 3 and the protective device 2 are connected by wires, which enables signal transmission between the detection device 3 and the protective device 2. The detection device 3 and the protective device 2 can be installed and removed separately, allowing either to be replaced separately, which facilitates the maintenance of the fire detector later.

[0039] Optionally, the shell 1 is closed, and the second section 12 is provided with a mounting plate to separate the interior of the shell 1 into a closed first mounting cavity and a second mounting cavity. The protective device 2 is located in the first mounting cavity, and the detection device 3 is located in the second mounting cavity. The mounting plate separates the protective device 2 and the detection device 3. When installing or removing one of the devices, the mounting plate will protect the other device from external damage and dust entry.

[0040] Specifically, if Figure 1 and Figure 2 As shown, the housing 1 is cylindrical and is composed of a first section 11, a second section 12, and a third section 13, joined in sequence. One side of the mounting plate and the third section 13 form a first mounting cavity, while the other side of the mounting plate and the first section 11 form a second mounting cavity. The mounting plate is provided with a wire hole 126, through which one end of the wire is connected to the protective device 2, and the other end is connected to the detection device 3 through the wire hole 126. This installation method simplifies internal wiring and facilitates installation and removal.

[0041] The mounting plate can be secured to the second section 12 by bonding or snapping, or it can be integrally formed with the second section 12, though this embodiment does not limit this. For example, adhesive can be applied to the circumferential edge of the mounting plate to secure the mounting plate to the second section 12. The adhesive can be a viscous material such as AB glue or glue, though this embodiment does not limit this. The housing 1 can be made of plastic, alloy, or glass, depending on the specific application scenario, though this embodiment does not limit this.

[0042] Alternatively, as Figure 1 and Figure 3As shown, the fire detector also includes a support stud 4, which is arranged in the second section 12 and extends into the third section 13. The protective device 2 is installed at one end of the support stud 4 extending into the third section 13, so that the protective device 2 is away from the detection device 3, further avoiding interference between the protective device 2 and the detection device 3 during installation or removal.

[0043] Specifically, the support stud 4 is a cylinder. The support stud 4 is arranged at intervals along the circumference of the mounting plate. One end of the support stud 4 can be fixed to the mounting plate by bonding or clamping, and the other end is fixed to the protective device 2 by a connecting piece. A mounting hole is provided on the support stud 4. When fixing the protective device 2, a through hole corresponding to the mounting hole of the support stud 4 is provided on the protective device 2. One side of the connecting piece is passed through the through hole on the protective device 2 and inserted into the mounting hole of the support stud 4, and the protective device 2 is tightened to achieve the fixation of the protective device 2. The connecting piece can be a connecting piece such as a screw or a pin, and this embodiment does not limit this. The number of connecting pieces can be one, two, three or more than three, and this embodiment does not limit this.

[0044] Alternatively, as Figure 1 As shown, the detection device includes a circuit board 31, a circuit module 32, and a lens assembly 33. The circuit board 31 is fixed to the second section 12, and the circuit module 32 is disposed on the side of the circuit board 31 facing away from the second section 12. The circuit board 31 and the circuit module 32 are electrically connected. The circuit module 32 is a signal processor that converts detected fire signals into an electrical signal format. The circuit board 31 provides the necessary circuit connections and support for the circuit module 32 to ensure stable signal transmission. The specific model of the signal processor can be referred to in the prior art and is not described in detail in this application.

[0045] The lens assembly 33 is located on the side of the circuit module 32 facing away from the circuit board 31. The circuit module 32 and lens assembly 33 are electrically connected and are used for fire imaging. The circuit board 31, circuit module 32, and lens assembly 33 are all located within the first section 11. The circuit board 31 and protective device 2 are located on either side of the second section 12. The circuit board 31 and protective device 2 are separate components separated by a certain distance, allowing them to be replaced independently, reducing the difficulty of subsequent maintenance. The lens assembly 33 is located near the edge of the first section 11, enabling detection over a wider range. The layout of the circuit board 31 and circuit module 32 reduces the electromagnetic compatibility of the fire detector. The simple structure facilitates installation and removal, improving production efficiency.

[0046] Furthermore, if Figures 1-4As shown, the fire detector also includes a mounting bracket 5 arranged in the second section 12, and the mounting bracket 5 extends to the side away from the protective device 2 to form a cable groove 54, which can accommodate internal wires and facilitate the management and maintenance of the lines. The detection device 3 is installed on the side of the mounting bracket 5 away from the protective device 2, further increasing the distance between the detection device 3 and the protective device 2, thereby avoiding mutual interference between the protective device 2 and the detection device 3 during installation or disassembly.

[0047] Specifically, the mounting bracket 5 can be fixed to the mounting plate via a connector, or it can be directly fixed to the housing 1 via a connector. Taking the fixed connection between the mounting bracket 5 and the mounting plate as an example, a plurality of first mounting holes 125 are provided along the circumferential intervals of the mounting plate, and a fourth mounting hole 53 is provided at a portion of the mounting bracket 5 corresponding to the first mounting hole 125. One side of the connector is passed through the fourth mounting hole 53 and into the first mounting hole 125 of the mounting plate, and the mounting bracket 5 is tightened to achieve the fixation of the mounting bracket 5. The connector can be a screw, a pin, or other connector, which is not limited in this embodiment. The number of connectors can be one, two, three, or more, which is not limited in this embodiment.

[0048] In this embodiment, a third mounting hole 52 is provided on the side of the mounting bracket 5 facing the third section 13, and a second mounting hole 51 is provided on the side facing the first section 11. Through holes are provided at positions corresponding to the third mounting hole 52 on the circuit board 31 and at positions corresponding to the second mounting hole 51 on the circuit module 32. A connector is inserted through the through hole on the circuit board 31 and into the third mounting hole 52, thereby tightening the circuit board 31. Another connector is inserted through the through hole on the circuit module 32 and into the second mounting hole 51, thereby tightening the circuit module 32, thereby securing the circuit board 31 and the circuit module 32. The circuit board 31 and the circuit module 32 are connected by electrical wires. The lens assembly 33 is secured to the side of the circuit module 32 facing the first section 11. The lens assembly 33 can be secured by means of a snap-fit, threaded connection, or connector, and this embodiment is not limited thereto. Taking the snap-fitting method as an example, a snap hook is provided on the side of the circuit module 32 facing the first section 11, and a snap slot is provided on the lens assembly 33. External pressure is applied to insert the snap hook into the snap slot, causing the snap hook and the snap slot to snap and securely engage, thereby securing the lens assembly 33. The lens assembly 33 and the circuit module 32 are connected via wires to enable signal transmission between the lens assembly 33 and the circuit module 32. When installing the detection device 3, first install the circuit board 31 and the circuit module 32 on the mounting bracket 5, and then install the mounting bracket 5 on the mounting plate.

[0049] Alternatively, as Figure 1-Figure 5As shown, the fire detector also includes a panel 6, which is arranged inside the first section 11. An indicator light for alarm display is provided on the panel 6. When the fire detector detects a fire, the indicator light will emit light to determine whether a fire has occurred.

[0050] Specifically, the panel 6 is mounted on the mounting bracket 5. Positioning holes 64 corresponding to the first mounting holes 125 are provided at intervals on the circumferential edge of the panel 6. During installation, the connector of the positioning mounting bracket 5 is passed through the positioning hole 64 on the panel 6, and then passed through the fourth mounting hole 53 and into the first mounting hole 125 of the mounting plate, so that the mounting bracket 5 and the panel 6 are tightened and fixed at the same time. The surface of the panel 6 can be made of resin or plastic, etc., which is not limited in this embodiment. The indicator light is fixed to the panel 6 by screws or bolts. Taking screws as an example, an indicator light hole 61 and a fifth mounting hole 62 are provided on the panel 6, and a through hole is provided on the indicator light at a position corresponding to the fifth mounting hole 62. The screw is passed through the through hole on the indicator light and into the fifth mounting hole 62 to lock and fix the indicator light. The light emitted by the indicator light can pass through the indicator light hole 61 for observation by the user.

[0051] Furthermore, multiple indicator lights of different colors can be provided to indicate the different operating states of the fire detector. In this embodiment, a red indicator light, a yellow indicator light, and a green indicator light are provided. The red indicator light is used for alarm indication and emits light when a fire is detected. The yellow indicator light is used for fault indication and emits light when the fire detector is malfunctioning. The green indicator light is used for operation indication and emits light when the fire detector is in normal working state.

[0052] Optionally, a lens hole 63 is provided in the middle of the panel 6. The portion of the lens assembly 33 used for recording extends through the lens hole 63 on the panel 6 to the inner edge of the first section 11, thereby enabling monitoring of a wider range of the external environment. The surface of the panel 6 facing the first section 11 is a silk screen surface 65, on which numbers and patterns can be printed.

[0053] Alternatively, as Figure 1 and Figure 2 As shown, in one embodiment, the first section 11 and the second section 12, and the second section 12 and the third section 13 are threadedly connected. This threaded connection facilitates installation and removal of the housing 1 and provides good sealing at the connection between the housing and the housing. In this embodiment, the second section 12 is provided with external threads at both axial ends. The first section 11 and the third section 13 are both provided with internal threads corresponding to the external threads at the connection points with the second section 12, thereby connecting the first section 11, the second section 12, and the third section 13 via threads.

[0054] Optionally, in another embodiment, seals are provided at the joints between the first and second segments 11, 12, and between the second and third segments 12, 13 to seal the gaps, further improving the sealing of the housing connection and providing enhanced water and dust resistance. In this embodiment, the seals are annular structures that are positioned axially around the second segment 12. The seals are secured by threaded connections between the first and third segments 11, 13, and the second segment 12. The seals can be made of a flexible material such as rubber or resin, which is not limited in this embodiment.

[0055] Optionally, a window 111 is provided on the side of the first section 11 facing away from the second section 12, through which the lens assembly 33 can better detect the external environment. In this embodiment, the window 111 is cylindrical, with a groove provided at one end thereof, which is connected to the first section 11 and can accommodate the lens assembly 33. The window 111 and the first section 11 can be secured by bonding, snapping, or threading, which is not limited in this embodiment. The window 111 can also be made of a transparent material such as transparent plastic or glass, which is also not limited in this embodiment.

[0056] Optionally, grooves are provided along the circumferential spacing rings on the exterior of the first and third sections 11, 13. The grooves can increase the friction between the first and third sections 11, 13 and external objects. During installation and removal, workers can hold the grooves with their hands or clamp them with a clamp to prevent their hands or clamps from sliding on the first and third sections 11, 13, thereby facilitating installation and removal of the housing 1 and improving assembly efficiency. In this embodiment, the groove spacing rings are provided on the edges of the first and third sections 11, 13 away from the second section 12. The size and number of the grooves may increase or decrease depending on the size of the fire detector, and this embodiment does not limit this.

[0057] Alternatively, as Figure 1 and Figure 6 As shown, a grounding hole 121 is provided on the housing 1 for grounding, protecting personal safety and preventing equipment damage. In this embodiment, the grounding hole 121 is provided on the outer wall of the second section 12 and can be electrically connected to a ground wire.

[0058] Alternatively, as Figure 1 and Figure 3 As shown, the fire detector also includes a tail line 7, one end of the tail line 7 is electrically connected to the protective device 2, and the other end of the tail line 7 is connected to an external device. The fire detector can be connected to the fire protection system through the tail line 7 so that the fire protection system can be activated in time when a fire is detected, so as to better prevent the occurrence of fire.

[0059] Furthermore, if Figure 1 、 Figure 3 and Figure 6As shown, a waterproof connector 122 is provided on the housing 1, and the tail line 7 passes through the waterproof connector 122 to connect to the external device, thereby improving the waterproof performance of the fire detector and extending the service life of the fire detector. In this embodiment, the waterproof connector 122 is provided on the outer wall of the second section 12.

[0060] Optionally, a plug 123 is provided on the housing 1 to prevent accidents such as explosions or combustion inside the fire detector, thereby improving the safety of the fire detector. In this embodiment, the plug 123 is provided on the outer wall of the second section 12. The plug 123 can be made of materials such as rubber, plastic, or metal. Different materials can be used for the plug 123 depending on the specific usage environment, and this embodiment does not limit this.

[0061] Alternatively, as Figure 1 and Figure 2 As shown, a connection portion is provided on the housing 1 to fix the fire detector to an external object. In this embodiment, a mounting threaded hole 124 is provided on the outer wall of the second section 12, and a screw is inserted through the external device and the mounting threaded hole 124 to fix the fire detector.

[0062] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A fire detector, characterized in that: include: A housing (1), wherein the housing (1) comprises a first section (11), a second section (12), and a third section (13) which are detachably connected in sequence; a protective device (2), the protective device (2) being arranged inside the third section (13); A detection device (3) is provided inside the first section (11), and the detection device (3) is connected to the protective device (2) by an electric wire.

2. The fire detector according to claim 1, characterized in that The fire detector further comprises a supporting stud (4), wherein the supporting stud (4) is mounted on the second section (12) and extends into the interior of the third section (13), and the protective device (2) is mounted on one end of the supporting stud (4) extending into the interior of the third section (13).

3. The fire detector according to claim 1, characterized in that The detection device (3) comprises: a circuit board (31) fixed to the second section (12); a circuit module (32), the circuit module (32) being arranged on a side of the circuit board (31) facing away from the second section (12), and the circuit board (31) and the circuit module (32) being electrically connected; A lens assembly (33) is provided on a side of the circuit module (32) facing away from the circuit board (31), the circuit module (32) and the lens assembly (33) are electrically connected, and the lens assembly (33) is used for fire imaging.

4. The fire detector according to claim 1 or 3, characterized in that: The fire detector further comprises a mounting bracket (5) mounted on the second section (12), the mounting bracket (5) extending toward a side away from the protective device (2), and the detection device (3) is mounted on a side of the mounting bracket (5) away from the protective device (2).

5. The fire detector according to claim 1, characterized in that The shell (1) is in a closed shape, and the second section (12) is provided with a mounting plate to separate the interior of the shell (1) into a closed first mounting cavity and a second mounting cavity, the protective device (2) is located in the first mounting cavity, and the detection device (3) is located in the second mounting cavity.

6. The fire detector according to claim 1, characterized in that The joints between the first section (11) and the second section (12) and the joints between the second section (12) and the third section (13) are provided with sealing members to seal the gaps.

7. The fire detector according to claim 1, characterized in that The first section (11) and the second section (12) and the second section (12) and the third section (13) are threadedly connected.

8. The fire detector according to claim 1, characterized in that The fire detector further comprises a panel (6), the panel (6) being arranged inside the first section (11), and an indicator light for alarm display being arranged on the panel (6).

9. The fire detector according to claim 1, characterized in that The fire detector further comprises a tail wire (7), one end of the tail wire (7) is electrically connected to the protective device (2), and the other end of the tail wire (7) is used to connect to an external device.

10. The fire detector according to claim 9, characterized in that The housing (1) is provided with a waterproof connector (122), and the tail line (7) passes through the waterproof connector (122) to connect to an external device.

Images