Sensor holder assembly and combustible gas detector comprising the same

Abstract

The utility model provides a kind of sensor support assembly and contain the combustible gas detector of the support assembly, belong to combustible gas detector technical field, the sensor support assembly includes metal shell and cavity bulkhead, cavity bulkhead is equipped in metal shell, further include isolation support, glue block and sensor support, cavity bulkhead is equipped with through-hole, through-hole is equipped with isolation support, the bottom of isolation support is equipped with the glue groove for accommodating glue block, the top of isolation support is equipped with wire hole, wire hole is communicated glue groove, isolation support, glue block and cavity bulkhead are separated into front cavity and main cavity by metal shell, wire hole is fixed circuit board adapter plug, circuit board adapter plug is electrically connected respectively the circuit board of being equipped in front cavity and main circuit board being equipped in main cavity, and circuit board is electrically connected with sensor;Front cavity and main cavity can be effectively isolated, can improve the gas sealing effect in ventilation test, ensure the accuracy of point type combustible gas detector.

Description

Technical Field

[0001] This utility model relates to a sensor bracket assembly and a combustible gas detector including the bracket assembly, belonging to the technical field of combustible gas detectors. Background Technology

[0002] Current sensor bracket assembly designs for point-type combustible gas detectors used in industrial and commercial applications perform poorly in ventilation and drop tests. Specific defects include poor gas sealing between the front and main chambers during ventilation tests, affecting the accuracy of the point-type combustible gas detectors. Furthermore, the sensor bracket exhibits insufficient stability and protection during drop tests.

[0003] The above-mentioned issues should be considered and resolved during the design and manufacturing process of the sensor bracket assembly. Utility Model Content

[0004] The purpose of this invention is to provide a sensor bracket assembly and a combustible gas detector including the bracket assembly to solve the problem that poor gas sealing effect affects the accuracy of point-type combustible gas detectors in the prior art.

[0005] The technical solution of this utility model is:

[0006] A sensor bracket assembly includes a metal housing and a cavity partition. The cavity partition is located inside the metal housing. The assembly also includes an isolation bracket, an adhesive block, and a sensor bracket. The cavity partition has a through hole, and the isolation bracket is located at the through hole. The bottom of the isolation bracket has an adhesive groove for accommodating the adhesive block, and the top of the isolation bracket has a wire-passing hole that connects to the adhesive groove. The isolation bracket, the adhesive block, and the cavity partition together divide the metal housing into a front cavity and a main cavity. A circuit board adapter plug is fixed at the wire-passing hole. The circuit board adapter plug is electrically connected to a circuit board located in the front cavity and a main circuit board located in the main cavity. The circuit board is electrically connected to the sensor, and the sensor is fixed to the sensor bracket by a locking mechanism.

[0007] Furthermore, the isolation bracket includes a top plate and a bottom frame. The top plate is provided with a wire passage hole and is located on the bottom frame, which is provided with a glue groove.

[0008] Furthermore, the isolation bracket also includes a fault-proof protrusion on the top plate, and the sensor bracket is provided with a fault-proof groove for accommodating the fault-proof protrusion.

[0009] Furthermore, the circuit board adapter plug is connected to the isolation bracket via Phillips head screws.

[0010] Furthermore, the sealant block is a sealant block that has been cured and molded using sealant.

[0011] Furthermore, the end of the metal housing is provided with a gas collecting head, the gas collecting head is provided with a gas collecting hole, a filter is provided at the gas collecting hole, the sensor bracket is located inside the gas collecting head, and the sensor bracket and the metal housing together form the front cavity.

[0012] Furthermore, EVA foam is provided between the gas collecting head and the sensor bracket.

[0013] Furthermore, the sensor bracket is provided with mounting holes for accommodating the sensor, and the mounting holes are angled holes.

[0014] Furthermore, the main circuit board is connected to the display screen and the alarm, which are respectively mounted on the metal casing.

[0015] A combustible gas detector includes a sensor bracket assembly and a gas collecting head. The gas collecting head is located at the end of a metal housing and has a gas collecting hole. A filter is provided at the gas collecting hole. The sensor bracket assembly is any of the sensor bracket assemblies described above.

[0016] The beneficial effects of this invention are as follows: This sensor bracket assembly and the combustible gas detector including the bracket assembly can effectively isolate the front cavity and the main cavity, avoiding the problem of gas leakage between the front cavity and the main cavity, improving the gas sealing effect during ventilation tests, and ensuring the accuracy of the point-type combustible gas detector. Simultaneously, it enhances stability and protection during drop tests, extends the service life of the point-type combustible gas detector, and meets the performance requirements of point-type combustible gas detectors for industrial and commercial applications. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the sensor bracket assembly according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the isolation bracket in the embodiment;

[0019] Figure 3 This is a schematic diagram of the sensor bracket and isolation bracket in the embodiment;

[0020] Figure 4 This is a schematic diagram of the combustible gas detector in the embodiment;

[0021] The components are: 1-metal housing, 2-cavity partition, 3-isolation bracket, 4-sealing block, 5-sensor bracket, 6-glue groove, 7-wire hole, 8-front cavity, 9-main cavity, 10-circuit board adapter plug, 11-circuit board, 12-main circuit board, 13-sensor, 14-locking mechanism, 15-air collecting head, 16-air collecting hole, 17-filter, 18-EVA foam, 19-mounting hole, 20-display screen, 21-alarm.

[0022] 31-Top plate, 32-Bottom frame, 33-Anti-mistake protrusion, 35-Screw. Detailed Implementation

[0023] The preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0024] An embodiment provides a sensor bracket assembly, such as Figure 1 The device includes a metal housing 1 and a cavity partition 2. The cavity partition 2 is located inside the metal housing 1. It also includes an isolation bracket 3, a sealing block 4, and a sensor bracket 5. The cavity partition 2 has a through hole, and the isolation bracket 3 is located at the through hole. The bottom of the isolation bracket 3 has a glue groove 6 for accommodating the sealing block 4. The top of the isolation bracket 3 has a wire hole 7 that connects to the glue groove 6. The isolation bracket 3, the sealing block 4, and the cavity partition 2 together divide the metal housing 1 into a front cavity 8 and a main cavity 9. A circuit board adapter plug 10 is fixed at the wire hole 7. The circuit board adapter plug 10 is electrically connected to a circuit board 11 located in the front cavity 8 and a main circuit board 12 located in the main cavity 9. The circuit board 11 is electrically connected to a sensor 13. The sensor 13 is fixed to the sensor bracket 5 by a locking mechanism 14.

[0025] This sensor bracket assembly effectively isolates the front chamber 8 and the main chamber 9, preventing gas leakage between them and improving the gas sealing effect during ventilation tests, thus ensuring the accuracy of the point-type combustible gas detector. Simultaneously, it enhances stability and protection during drop tests, extending the service life of the point-type combustible gas detector and meeting the performance requirements of point-type combustible gas detectors for industrial and commercial applications.

[0026] like Figure 2 The isolation bracket 3 includes a top plate 31 and a bottom frame 32. The top plate 31 is provided with a wire passage hole 7 and is mounted on the bottom frame 32. The bottom frame 32 is provided with a glue groove 6. The top plate 31 is connected to the circuit board adapter plug 10. The glue groove 6 accommodates the glue sealing block 4, which seals the wire passage of the circuit board adapter plug 10, thereby improving the sealing performance of the isolation bracket 3.

[0027] like Figure 3The isolation bracket 3 also includes a mistake-proof protrusion 33 on the top plate 31, and the sensor bracket 5 has a mistake-proof groove for accommodating the mistake-proof protrusion 33. By setting the mistake-proof protrusion 33 and the mistake-proof groove to form a mistake-proof structure, the isolation bracket 3 is positioned on the sensor bracket 5, which facilitates the installation of the sensor bracket 5 and avoids reverse installation. The circuit board adapter plug 10 is connected to the isolation bracket 3 by screws 34, which are Phillips head screws. The sealant block 4 is a sealant block 4 formed by curing sealant. By filling the sealant groove 6 with sealant and curing the sealant block 4, the sealant block 4 achieves gas sealing at the connection between the isolation bracket 3 and the circuit board adapter plug 10, improving the sealing performance between the front cavity 8 and the main cavity 9.

[0028] like Figure 4 The metal housing 1 has a gas collecting head 15 at one end, with a gas collecting hole 16 and a filter 17 at the gas collecting hole 16. The sensor bracket 5 is located inside the gas collecting head 15, and the sensor bracket 5 and the metal housing 1 together form the front cavity 8. EVA foam 18 is provided between the gas collecting head 15 and the sensor bracket 5. The purpose of adding EVA foam 18 is to increase the product's cushioning effect to protect the sensor 13, improve drop resistance, and solve the problem of sensor 13 failing when dropped.

[0029] like Figure 1 The sensor bracket 5 has a mounting hole 19 for accommodating the sensor 13. The mounting hole 19 is angled for easy installation and good sealing. The angle between the height of the angled hole and the bevel is 5-10 degrees. The diameter of the end of the angled hole near the locking mechanism 14 is larger than the diameter of the end of the locking mechanism 14, which increases the gas-tightness of the sensor 13. The height of the mounting hole 19 is the same as the height of the sensor 13, allowing the sensor 13 to have more sufficient contact with the gas, thus making the gas detection results of the sensor 13 more accurate and reliable. To address the problem that the sensor 13 is prone to loosening and damage when mounted on the sensor bracket 5, the locking mechanism 14 adopts a threaded structure, which can reliably fix the sensor 13 after the threads are tightened. The circuit board 11 is connected to the sensor bracket 5 through a snap-fit ​​structure, which has the advantage of simple and convenient installation. The main circuit board 12 is connected to the display screen 20 and the alarm 21, which are respectively mounted on the metal housing 1. The display screen 20 displays the gas detection data, and the alarm 21 sounds the alarm.

[0030] The embodiment also provides a combustible gas detector, such as Figure 4 The sensor bracket assembly includes a sensor support assembly and a gas collection head 15. The gas collection head 15 is located at the end of the metal housing 1. The gas collection head 15 has a gas collection hole 16 and a filter 17 is provided at the gas collection hole 16. The sensor support assembly adopts any of the above-mentioned sensor support assemblies.

[0031] The process of this combustible gas detector is as follows: gas enters the front cavity 8 after passing through the gas collection hole 16 and the filter 17. The gas concentration is obtained by the sensor 13 and sent to the main circuit board 12 via the circuit board 11 and the circuit board adapter plug 10. The main circuit board 12 displays the gas through the display screen 20.

[0032] This sensor bracket assembly and the combustible gas detector containing it are formed as a whole by sealing the circuit board adapter 10 and the isolation bracket 3 with adhesive. The adhesive block 4 effectively seals the connection between the circuit board adapter 10 and the isolation bracket 3, effectively isolating the front cavity 8 from the main cavity 9, eliminating the possibility of gas leakage, and ensuring the accuracy of gas detection. It is also easy to install, not easily installed backwards, drop-resistant, and has a long service life.

[0033] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.

Claims

1. A sensor bracket assembly, comprising a metal housing and a cavity partition, wherein the cavity partition is disposed within the metal housing, characterized in that: It also includes an isolation bracket, a sealant block, and a sensor bracket. The cavity partition has a through hole, and the isolation bracket is located at the through hole. The bottom of the isolation bracket has a glue groove for accommodating the sealant block, and the top of the isolation bracket has a wire hole that connects to the glue groove. The isolation bracket, sealant block, and cavity partition together divide the metal housing into a front cavity and a main cavity. A circuit board adapter plug is fixed at the wire hole. The circuit board adapter plug is electrically connected to the circuit board located in the front cavity and the main circuit board located in the main cavity. The circuit board is electrically connected to the sensor, and the sensor is fixed to the sensor bracket by a locking mechanism.

2. The sensor bracket assembly as described in claim 1, characterized in that: The isolation bracket includes a top plate and a bottom frame. The top plate is provided with wire holes and is located on the bottom frame, which is provided with a glue groove.

3. The sensor bracket assembly as described in claim 2, characterized in that: The isolation bracket also includes a fault-proof protrusion on the top plate, and the sensor bracket has a fault-proof groove for accommodating the fault-proof protrusion.

4. The sensor bracket assembly as described in any one of claims 1-3, characterized in that: The circuit board adapter plug is connected to the isolation bracket via Phillips head screws.

5. The sensor bracket assembly as described in any one of claims 1-3, characterized in that: The sealant block is a sealant block that is cured and molded using sealant.

6. The sensor bracket assembly as described in any one of claims 1-3, characterized in that: The end of the metal housing is provided with a gas collecting head, the gas collecting head is provided with a gas collecting hole, a filter is provided at the gas collecting hole, the sensor bracket is located inside the gas collecting head, and the sensor bracket and the metal housing together form the front cavity.

7. The sensor bracket assembly as described in claim 6, characterized in that: EVA foam is placed between the gas collecting head and the sensor bracket.

8. The sensor bracket assembly as described in any one of claims 1-3, characterized in that: The sensor bracket has mounting holes for accommodating the sensor, and the mounting holes are angled holes.

9. The sensor bracket assembly as described in any one of claims 1-3, characterized in that: The main circuit board is connected to the display screen and the alarm, which are respectively mounted on the metal casing.

10. A combustible gas detector, comprising a sensor support assembly and a gas collecting head, the gas collecting head being disposed at the end of a metal housing, the gas collecting head having a gas collecting hole, and a filter being disposed at the gas collecting hole, characterized in that: The sensor bracket assembly adopts the sensor bracket assembly according to any one of claims 1-9.

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