Combustible gas alarm controller

Abstract

The utility model provides a combustible gas alarm controller, which comprises a shell, an electronic component is arranged in the shell, the shell comprises a rear shell and a front shell, the front shell comprises an upper shell, the upper shell is fixedly connected onto the rear shell, bending plates are arranged on the periphery of the upper shell, and the bending plates are arranged on the upper shell. A clamping hole is formed in the bending plate on the lower side of the clamping plate; a bending plate is also arranged on the periphery of the lower shell, a hinge hinge is fixed on the lower shell, first hinge pins are movably connected in two hinge cylinders at the upper end and the lower end of the hinge hinge, a reset spring is arranged outside the first hinge pins in a sleeving mode, and the reset spring is located between the two hinge cylinders; the top of the first hinge pin is also provided with a clamping head; the clamping head is positioned in the clamping hole of the upper shell in a natural state; a mounting plate is further fixed to the bottom of the rear shell, a second hinge pin is fixedly connected into the mounting plate, and the second hinge pin is inserted into a bent plate on the lower side of the lower shell. The combustible gas alarm controller is simple in structure, the front shell is divided into two parts, the linkage plate can be overhauled only by opening the lower shell, and the risk of mistakenly touching a switching power supply is avoided.

Description

Technical Field

[0001] The utility model relates to the field of alarm controllers, in particular to a combustible gas alarm controller. Background Art

[0002] With the rapid development of industrialization and urbanization, the use of combustible gases is becoming more and more widespread, and its safety issues are receiving increasing attention. Among the many safety protection measures, combustible gas alarms are an important safety device. Their function is to monitor the concentration of combustible gases in the environment. Once the concentration exceeds the safety threshold, it can promptly issue an alarm to prevent possible fire or explosion accidents.

[0003] Traditional combustible gas alarms usually consist of a rear shell and a front shell, which are connected by a hinge. When inspection, repair or maintenance is required, the operator needs to open the front shell to access the internal electronic components and sensors. However, this design has certain safety hazards. Specifically, when the front shell is opened, the power switch and control panel of the alarm are usually located in the upper area of ​​the rear shell, while other components such as the linkage board are located in the lower area. Maintenance generally involves operating the linkage board. This layout makes it easy for operators to accidentally touch the switch power supply during maintenance, causing the alarm to malfunction or shut down, thereby losing its proper safety protection function.

[0004] In addition, when checking the functions of various parts of the controller, it is necessary to check the parameters displayed on the electronic screen installed on the front shell. Since the front shell is deflected, this often requires the operator to frequently turn his head or walk back and forth to complete the viewing. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides a combustible gas alarm controller with a simple structure. The front shell is divided into two parts. The linkage plate can be inspected and repaired by simply opening the lower shell without the risk of accidentally touching the switch power.

[0006] To achieve the above purpose, the present invention adopts the following technical solution: a combustible gas alarm controller, comprising a housing, wherein electronic components are installed in the housing, and the housing comprises a rear housing and a front housing,

[0007] The front housing comprises:

[0008] An upper shell, the upper shell being fixedly connected to the rear shell, the upper shell having a bent plate on its side, and a snap-in hole being provided on the bent plate on its lower side;

[0009] The lower shell also has a bent plate around its periphery. A hinge leaf is fixed to the lower shell. A first hinge pin is movably connected to two hinge tubes at the upper and lower ends of the hinge leaf. A return spring is sleeved on the outside of the first hinge pin. The return spring is located between the two hinge tubes. A clamping joint is also provided on the top of the first hinge pin. The clamping joint is naturally located in the clamping hole of the upper shell.

[0010] A mounting plate is fixed to the bottom of the rear shell, a second hinge pin is fixedly connected to the mounting plate, and the second hinge pin is inserted into the bending plate on the lower side of the lower shell.

[0011] Furthermore, the upper shell includes a first panel, and the left side, right side, upper side and lower side of the first panel all have bent plates, wherein both ends of the bent plate on the lower side of the upper shell have outward flanges, and connecting holes are opened on the outward flanges.

[0012] Furthermore, the bottom of the first hinge pin has a horizontal bending portion.

[0013] Furthermore, a first bracket plate and a second bracket plate are fixed to the upper side of the rear shell, and the upper panel of the upper shell is fixed to the first bracket plate and the second bracket plate by screws.

[0014] Furthermore, the lower side of the rear shell also has a bent plate, the bent plate has a positioning flange, and the bent plate of the lower shell is provided with a positioning groove.

[0015] Furthermore, the first hinge pin includes a reducing rod, the card joint is threadedly connected to the threaded column at the top of the reducing rod through a threaded tube, the return spring is outside the reducing rod, and the bottom of the return spring is fixed to the hinge tube at the lower end of the hinge.

[0016] Furthermore, the height of the second hinge pin inserted into the lower shell is 10 mm.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The combustible gas alarm controller has a simple structure. The front shell is divided into two parts. You only need to open the lower shell to inspect the linkage board without the risk of accidentally touching the switch power supply.

[0019] 2. Since the lower housing is hinged between the upper housing and the rear housing by the first hinge pin and the second hinge pin, the lower housing can be quickly disassembled after the first hinge pin is controlled to move downward. When it is necessary to replace electronic components in the area covered by the lower housing, the lower housing can be disassembled to avoid interfering with the operator's replacement.

[0020] 3. The first panel of the upper shell is surrounded by bent plates, which can effectively increase its strength. At the same time, during stamping, a part of the bent plate can be directly formed into an outer flange without additional welding, which effectively simplifies the process and reduces processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0022] Figure 2 This is a structural diagram of the utility model after removing the upper shell;

[0023] Figure 3 This is a structural diagram of the lower rear shell of the utility model;

[0024] Figure 4 This is a structural diagram of the hinge leaf and the first hinge pin of the present invention;

[0025] Figure 5 This is a diagram of the connection structure of the first hinge pin and the connecting cylinder of the present utility model.

[0026] In the figure: 1. Rear housing; 2. Front housing; 3. Bending plate; 4. Snap-fit ​​hole; 5. Hinge leaf; 6. First hinge pin; 7. Return spring; 8. Snap joint; 9. Mounting plate; 10. Second hinge pin; 11. First panel; 12. Outer flange; 13. Connecting hole; 14. Horizontal bending portion; 15. First bracket plate; 16. Second bracket plate; 17. Positioning flange; 18. Positioning groove; 19. Reducing rod; 20. Upper hinge cylinder; 21. Lower hinge cylinder; 22. LCD screen; 23. Door lock; DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 5 The combustible gas alarm controller shown in the figure comprises a housing in which electronic components are installed. The housing comprises a rear housing 1 and a front housing 2.

[0029] The front housing 2 includes:

[0030] The upper shell is fixedly connected to the rear shell 1. The side of the upper shell has a bent plate 3, and a snap-in hole 4 is provided on the bent plate 3 on the lower side;

[0031] The lower shell also has a bent plate 3 around it, and a hinge page 5 is fixed to the lower shell. The two hinge cylinders at the upper and lower ends of the hinge page 5 are movably connected to a first hinge pin 6. A return spring 7 is sleeved on the outside of the first hinge pin 6. The return spring 7 is located between the two hinge cylinders. A clamping joint 8 is also provided on the top of the first hinge pin 6. The clamping joint 8 is naturally located in the clamping hole 4 of the upper shell;

[0032] A mounting plate 9 is fixed to the bottom of the rear housing 1 , and a second hinge pin 10 is fixedly connected to the mounting plate 9 . The second hinge pin 10 is inserted into the bending plate 3 on the lower side of the lower housing.

[0033] When assembling the present invention, the upper shell and the lower shell in the front shell 2 are assembled to the rear shell 1. Specifically, the upper shell is fixed first. After the upper shell is fixed, the L-shaped bending plate 3 on the lower side of the lower shell and the second hinge pin 10 on the mounting plate 9 of the rear shell 1 are hinged. Then, under the elastic force of the reset spring 7, the first hinge pin 6 on the lower shell has its card joint 8 in the upper shell, and is hinged to the upper shell through the card joint 8. After the assembly is completed, the rear shell 1 is fixed to a wall or a column, and the lower shell is locked by the door lock. The internal electronic components are connected to the external gas detector, and the status of the combustible gas can be displayed through the LCD 22 on the upper shell. When the alarm needs to be repaired, first open the door lock 23, and then pull out the first hinge pin 6 downward, so that the card joint 8 on the top of the first hinge pin 6 can be separated from the card hole 4 of the upper shell. After the card joint 8 of the first hinge pin 6 of the lower shell is separated from the upper shell, the lower shell and the upper shell can be staggered at a certain angle, and it is more convenient to separate the lower shell from the second hinge pin 10.

[0034] Furthermore, the upper housing includes a first panel 11, which has bent plates on the left, right, top, and bottom sides. The bent plate on the bottom side of the upper housing has outer flanges 12 at both ends, and connection holes 13 are provided in the outer flanges. Specifically, to enhance the strength of the upper housing, the first panel 11 of the upper housing has bent plates on all four sides. Furthermore, the bent plate on the bottom side of the upper housing has outer flanges 12. Through the connection holes 13 in the outer flanges 12, the upper housing can be fixed to the rear housing 1 using screws.

[0035] Furthermore, the bottom of the first hinge pin 6 has a horizontal bent portion 14. In order to make the first hinge pin 6 more convenient to operate, the bottom of the first hinge pin 6 has a horizontal bent portion 14, and the first hinge pin 6 can be pulled downward by applying force on the horizontal bent portion 14.

[0036] Furthermore, a first bracket plate 15 and a second bracket plate 16 are fixed to the upper side of the rear housing 1, and the upper panel of the upper housing is fixed to the first bracket plate 15 and the second bracket plate 16 by screws. Specifically, two bracket plates are fixed to the upper side of the rear housing 1, and can be fixed to the first bracket plate 15 and the second bracket plate 16 by the upper panel of the upper housing and screws.

[0037] Furthermore, the lower side of the rear housing 1 also has a bent plate with a positioning flange 17, and the bent plate of the lower housing is provided with a positioning slot 18. Specifically, the lower side of the rear housing 1 also has a bent plate, and the positioning flange 17 on the bent plate matches the positioning slot 18 on the lower housing. In this way, the lower housing can be accurately positioned when closed, ensuring smoother locking.

[0038] Furthermore, the first hinge pin 6 includes a reducing rod 19, the clamping joint 8 is threadedly connected to the threaded column at the top of the reducing rod 19 through a threaded tube, the return spring 7 is outside the reducing rod 19, and the bottom of the return spring 7 is fixed to the hinge tube at the lower end of the hinge leaf. Specifically, the first hinge pin 6 of the utility model has a reducing rod 19, the return spring 7 is directly sleeved on the outside of the reducing rod 19, and is clamped between the two hinge tubes. When the first hinge pin 6 needs to be pulled out, the first hinge pin 6 moves downward, and the clamping joint 8 thereon moves downward in the upper hinge tube 20. When moving downward, it can directly squeeze the return spring 7, causing it to be compressed on the end face of the lower hinge tube 21 below, thereby causing the clamping joint 8 to detach from the upper shell.

[0039] Furthermore, the second hinge pin 10 is inserted into the lower housing to a height of 10 mm. Specifically, the height of the second hinge pin 10 inserted into the lower housing should not be too large, otherwise it will be difficult for the lower housing and the second hinge pin 10 to separate after the first hinge pin 6 is removed from the upper housing. Therefore, it is more appropriate to set the second hinge pin 10 to be inserted into the lower housing to a height of 10 mm.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A combustible gas alarm controller, comprising a housing, in which electronic components are installed, the housing comprising a rear housing and a front housing, characterized in that: The front housing comprises: An upper shell, the upper shell being fixedly connected to the rear shell, the upper shell having a bent plate on its side, and a snap-in hole being provided on the bent plate on its lower side; The lower shell also has a bent plate around its periphery. A hinge leaf is fixed to the lower shell. A first hinge pin is movably connected to two hinge tubes at the upper and lower ends of the hinge leaf. A return spring is sleeved on the outside of the first hinge pin. The return spring is located between the two hinge tubes. A clamping joint is also provided on the top of the first hinge pin. The clamping joint is naturally located in the clamping hole of the upper shell. A mounting plate is fixed to the bottom of the rear shell, a second hinge pin is fixedly connected to the mounting plate, and the second hinge pin is inserted into the bending plate on the lower side of the lower shell.

2. A combustible gas alarm controller according to claim 1, characterized in that: The upper shell includes a first panel, and the left side, right side, upper side and lower side of the first panel are all provided with bent plates, wherein both ends of the bent plate on the lower side of the upper shell have outer flanges, and connection holes are opened on the outer flanges.

3. A combustible gas alarm controller according to claim 2, characterized in that: The bottom of the first hinge pin has a horizontal bending portion.

4. A combustible gas alarm controller according to claim 3, characterized in that: A first bracket plate and a second bracket plate are fixed to the upper side of the rear shell, and the upper panel of the upper shell is fixed to the first bracket plate and the second bracket plate by screws.

5. A combustible gas alarm controller according to claim 4, characterized in that: The lower side of the rear shell also has a bent plate, the bent plate has a positioning flange, and the bent plate of the lower shell is provided with a positioning groove.

6. A combustible gas alarm controller according to claim 5, characterized in that: The first hinge pin includes a reducing rod, the card joint is threadedly connected to the threaded column at the top of the reducing rod through a threaded barrel, the return spring is outside the reducing rod, and the bottom of the return spring is fixed to the hinge barrel at the lower end of the hinge.

7. A combustible gas alarm controller according to claim 6, characterized in that: The second hinge pin is inserted into the lower housing to a height of 10 mm.

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