Display screen sealing structure for gas alarm and gas alarm

Abstract

The utility model relates to the technical field of gas alarm sealing, in particular to a display screen sealing structure for a gas alarm and the gas alarm. The device comprises a mounting block, a display screen and a wire connected with the display screen, during installation, the free end of a wire connected with the display screen sequentially penetrates through the wire passing hole, the elastic wire passing plug and the wire passing extrusion part; then the elastic wire passing plug is placed in the wire passing hole, and then the wire passing extrusion part is connected into the wire passing hole to extrude the elastic wire passing plug; when the wire passing extrusion part extrudes the elastic wire passing plug, the elastic wire passing plug deforms so as to be tightly attached to the outer surface of the wire and the inner wall of the wire passing hole, and the tight attachment can effectively prevent external dust, water vapor and other impurities from affecting the display screen through a gap between the wire and the wire passing hole. Good sealing of the penetrating part of the connecting wire of the display screen is realized; in the maintenance process, destructive dismounting is not needed, and the display screen connecting wire or the elastic wire passing plug can be replaced and maintained conveniently.

Description

Technical Field

[0001] This utility model relates to the field of gas alarm sealing technology, and in particular to a display screen sealing structure for a gas alarm and a gas alarm. Background Technology

[0002] Display devices are widely used in various gas alarms, such as industrial control, outdoor electronics, and special equipment. Display screens often require sealed protection designs to extend the lifespan of both the display screen and the gas alarm. When sealing the display screen, it's often necessary to seal the connecting wires. Traditionally, fixed sealing rings or potting compound are used to seal the wires, but these methods have significant drawbacks in practical applications: First, they require destructive removal during later maintenance or replacement, easily damaging the wires and other components; second, they cannot be adjusted according to wire diameter, installation space, or sealing requirements.

[0003] Based on this, the applicant is considering designing an adjustable and easy-to-install and maintain display screen sealing structure and a gas alarm. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide an adjustable and easy-to-install and maintain display screen sealing structure and gas alarm.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A sealing structure for the display screen of a gas alarm includes a mounting block, a display screen, and connecting wires thereto.

[0007] The mounting block has a wire passage hole that connects the top side and the bottom side. The wire passage hole is for inserting an elastic wire passage plug and is detachably connected to a wire passage extrusion member that extrudes the elastic wire passage plug inside.

[0008] The free end of the wire connected to the display screen passes through the wire hole, the elastic wire plug, and the wire extrusion member. When the wire extrusion member extrudes the elastic wire plug, the elastic wire plug fits tightly against the wire and the wire hole.

[0009] The working principle and advantages of the sealing structure for the display screen of this technical solution for gas alarms are as follows:

[0010] During installation, first pass the free end of the wire connecting to the display screen through the cable guide hole, the flexible cable guide plug, and the cable guide clamp in sequence. Then, insert the flexible cable guide plug into the cable guide hole. Next, connect the cable guide clamp inside the cable guide hole, causing it to compress the flexible cable guide plug. When the cable guide clamp compresses the flexible cable guide plug, the flexible cable guide plug deforms, thus tightly fitting the outer surface of the wire and the inner wall of the cable guide hole. This tight fit effectively prevents external dust, moisture, and other impurities from affecting the display screen through the gap between the wire and the cable guide hole, achieving a good seal for the part where the display screen's connecting wires pass through. If it is necessary to replace the wire with one of a different diameter or adjust the installation space, the cable guide clamp can be removed first, and the flexible cable guide plug taken out. After replacing the flexible wire guide plug with one of the appropriate size, repeat the installation process described above to adapt to new wire diameters or installation space requirements. The cooperation between the flexible wire guide plug and the wire guide clamp ensures a tight seal on the wire passage, improving the protection performance of the display screen and gas alarm, and extending their service life. This sealing structure features a detachable wire guide clamp design, eliminating the need for destructive removal during replacement and maintenance. This facilitates the replacement and repair of the display screen's connecting wires or the flexible wire guide plug, reducing maintenance costs and difficulty. The flexible wire guide plug can be selected and adjusted according to different wire diameters and installation spaces, exhibiting strong adaptability and meeting various display screen sealing needs.

[0011] Furthermore, the wire-passing extrusion component is a wire-passing bolt, and the wire-passing bolt has a first through hole for the wire to pass through, and its outer wall is threadedly connected to the inner wall of the wire-passing hole.

[0012] Furthermore, the wires include multiple wires, and the elastic wire plug has multiple second through holes for the wires to pass through, with each of the multiple wires corresponding to one of the multiple second through holes.

[0013] Furthermore, the top side of the mounting block is provided with a mounting groove for mounting the display screen, and the mounting groove is connected to the cable hole.

[0014] Furthermore, it also includes a housing, wherein the mounting block is a sealing plug;

[0015] The top side of the housing is provided with an opening for inserting the sealing plug. The top of the housing is detachably connected with an end cap that restricts the removal of the sealing plug from the opening. A sealing element is provided between the bottom side of the end cap and the housing and the top side of the sealing plug, and the sealing element covers the gap between the housing and the sealing plug.

[0016] Furthermore, the outer wall of the sealing plug is provided with multiple annular grooves for fitting sealing rings.

[0017] Furthermore, the sealing element is a first sealing gasket.

[0018] Furthermore, the end cap is provided with a cutout portion exposing the display screen, and a transparent plate is installed in the cutout portion; the transparent plate is located above the first sealing gasket, and a second sealing gasket is provided between the top side of the transparent plate and the inner bottom side of the end cap.

[0019] Furthermore, the end cap is threadedly connected to the outer side wall of the top of the housing.

[0020] A gas alarm includes the aforementioned display screen sealing structure for a gas alarm. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the gas alarm according to an embodiment of the present invention. Figure 1 ;

[0022] Figure 2 This is a three-dimensional structural diagram of the gas alarm according to an embodiment of the present invention. Figure 2 ;

[0023] Figure 3 This is a cross-sectional structural diagram of a gas alarm according to an embodiment of the present invention;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 for Figure 3 Enlarged view of point B in the middle;

[0026] Figure 6 This is an exploded view of the first sealing gasket, transparent plate, second sealing gasket, information board, display screen, sealing plug, elastic wire guide plug, and wire guide bolt of this utility model embodiment;

[0027] Figure 7 This is a three-dimensional structural diagram of the motherboard according to an embodiment of the present utility model;

[0028] Figure 8 This is a three-dimensional structural diagram of the end cap, mounting plate, and arc-shaped plate according to an embodiment of the present utility model;

[0029] In the above attached figures:

[0030] 11. Combustible gas detection sensor array; 12. Liquid level sensor; 13. Vibration sensor; 14. Manhole cover sensor; 15. External antenna;

[0031] 100. Housing; 110. Mounting hole; 120. End cap; 121. Handle;

[0032] 200, Sealing plug; 210, Annular groove; 211, Sealing ring; 220, Wire hole; 230, Mounting groove;

[0033] 310. Flexible wire guide plug; 320. Wire guide bolt;

[0034] 410. Transparent panel; 421. First sealing gasket; 422. Second sealing gasket; 430. Information board;

[0035] 500. Motherboard; 510. Display screen;

[0036] 600. Power supply unit;

[0037] 710. Mounting plate; 720. Curved plate. Detailed Implementation

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Refer to together Figures 3-6 This embodiment provides a sealing structure for the display screen of a gas alarm, which includes a mounting block, a display screen 510 and connecting wires thereto;

[0040] The mounting block has a wire passage hole 220 connecting the top and bottom sides. The wire passage hole 220 is for inserting the elastic wire passage plug 310 and is detachably connected to a wire passage extrusion member that squeezes the elastic wire passage plug 310 inside. The free end of the wire connected to the display screen 510 passes through the wire passage hole 220, the elastic wire passage plug 310 and the wire passage extrusion member. When the wire passage extrusion member squeezes the elastic wire passage plug 310, the elastic wire passage plug 310 fits tightly with the wire and the wire passage hole 220.

[0041] In this embodiment, during installation, the free end of the wire connected to the display screen 510 is first passed through the wire hole 220, the elastic wire plug 310, and the wire pressing member in sequence; then, the elastic wire plug 310 is placed into the wire hole 220. Next, the wire pressing member is connected inside the wire hole 220, so that it presses against the elastic wire plug 310. When the wire pressing member presses against the elastic wire plug 310, the elastic wire plug 310 will deform, thereby tightly fitting the outer surface of the wire and the inner wall of the wire hole 220. This tight fit can effectively prevent external dust, moisture, and other impurities from affecting the display screen 510 through the gap between the wire and the wire hole 220, achieving a good seal for the part of the display screen 510 through which the connecting wire passes. If it is necessary to replace the wire with one of different diameters or adjust the installation space, the wire can be removed first. After removing the elastic wire guide plug 310 from the extrusion component and replacing it with a suitable size elastic wire guide plug 310, repeat the installation process described above to adapt to new wire diameters or installation space requirements. The cooperation between the elastic wire guide plug 310 and the wire extrusion component ensures a tight seal on the wire passage, improving the protection performance of the display screen 510 and the gas alarm, and extending their service life. This sealing structure features a detachable wire extrusion component design, eliminating the need for destructive removal during replacement and maintenance. This facilitates the replacement and repair of the display screen 510's connecting wires or the elastic wire guide plug 310, reducing maintenance costs and difficulty. The elastic wire guide plug 310 can be selected and adjusted according to different wire diameters and installation spaces, exhibiting strong adaptability and meeting various sealing requirements of the display screen 510.

[0042] Preferably, such as Figures 3-6 As shown, the wire-passing compression component is a wire-passing bolt 320. The wire-passing bolt 320 has a first through hole for the wire to pass through, and its outer wall is threaded to the inner wall of the wire-passing hole 220. When the wire-passing bolt 320 is tightened, it compresses the elastic wire-passing plug 310 inside the wire-passing hole 220. Under this compression, the elastic wire-passing plug 310 deforms, thus tightly fitting the outer surface of the wire and the inner wall of the wire-passing hole 220, forming a seal. When it is necessary to replace the wire or adjust the installation space, the wire-passing bolt 320 is unscrewed, the elastic wire-passing plug 310 is removed, a suitable elastic wire-passing plug 310 is replaced, and the wire-passing bolt 320 is reinstalled and tightened to accommodate the new wire diameter or installation space requirements. The wire-passing bolt 320 uses a threaded connection, making installation and disassembly convenient without destructive removal, facilitating the replacement and repair of the connecting wires of the display screen 510, and reducing maintenance costs and difficulty.

[0043] Preferably, such as Figure 6As shown, the wires include multiple wires, and the elastic wire plug 310 has multiple second holes for the wires to pass through. The multiple wires correspond one-to-one with the multiple second holes. The multiple second holes on the elastic wire plug 310 can meet the sealing requirements of multiple wires, ensure that each wire can get a good sealing effect, and prevent two or more wires from touching each other when they are located in the same second hole at the same time, forming gaps that are difficult to be filled by the elastic wire plug 310.

[0044] Preferably, such as Figures 3-6 As shown, a mounting groove 230 for mounting the display screen 510 is provided on the top side of the mounting block. The mounting groove 230 is connected to the wire hole 220. The mounting groove 230 provides space for the display screen 510 to be installed stably. The connection between the mounting groove 230 and the wire hole 220 facilitates the smooth insertion of the free end of the wire into the wire hole 220.

[0045] Preferably, such as Figures 1-8 As shown, the display screen sealing structure also includes a housing 100 and a sealing plug 200 as the mounting block. The top side of the housing 100 has an opening for inserting the sealing plug 200. An end cap 120 is detachably connected to the top of the housing 100 to restrict the removal of the sealing plug 200 from the opening. A sealing element is provided between the bottom side of the end cap 120 and the housing 100 and the top side of the sealing plug 200, covering the gap between the housing 100 and the sealing plug 200. During installation, the sealing plug 200 is inserted through the opening of the housing 100, the sealing element is placed above the gap between the housing 100 and the sealing plug 200, and finally the end cap 120 is connected to the housing 100. On the top, the end cap 120 presses against the seals on its bottom side and the top side of the housing 100; the top of the housing 100 forms a multi-seal structure through the combination design of the sealing plug 200 and the end cap 120, which can effectively prevent water vapor and corrosive gases from entering the housing 100 in humid and corrosive environments, protect the internal components connected to the display screen 510 or other components, and at the same time prevent the environment inside the housing 100 from affecting the display screen 510 above the sealing plug 200; specifically, the display screen 510 is installed between the end cap 120 and the top side of the sealing plug 200, and the mounting groove 230 is opened on the top side of the sealing plug 200.

[0046] Preferably, such as Figure 3 , Figure 4 as well as Figure 6 As shown, the outer wall of the sealing plug 200 has multiple annular grooves 210 for fitting sealing rings 211; the sealing plug 200 can fit multiple sealing rings 211 through the multiple annular grooves 210; when the sealing plug 200 is inserted into the opening of the housing 100, the sealing rings 211 fit tightly against the inner wall of the housing 100 to form a sealing barrier; by setting multiple annular grooves 210 on the outer wall of the sealing plug 200 and fitting multiple sealing rings 211, multi-layer sealing can be achieved, improving the sealing effect of the sealing plug 200.

[0047] Preferably, such as Figures 3-6 As shown, the sealing element is a first sealing gasket 421. The first sealing gasket 421 is installed at the contact surface between the end cap 120 and the top of the housing 100. When the end cap 120 is connected to the top of the housing 100, the first sealing gasket 421 is compressed and elastically deformed, thereby forming a tight sealing layer between the end cap 120 and the housing 100. This sealing layer can effectively prevent external moisture, dust and corrosive gases from entering the gap between the sealing plug 200 and the housing 100.

[0048] Preferably, such as Figures 3-6 As shown, the end cap 120 has a cutout portion exposing the display screen 510, and a transparent plate 410 is installed in the cutout portion. The transparent plate 410 is located above the first sealing gasket 421, and a second sealing gasket 422 is provided between the top side of the transparent plate 410 and the inner bottom side of the end cap 120. The end cap 120 has a cutout portion to expose the display screen 510, and the transparent plate 410 is installed in the cutout portion, covering the display screen 510 and protecting it while allowing the display screen to pass through. The display content of 510 is clearly visible; a second sealing gasket 422 is provided between the top side of the transparent plate 410 and the inner bottom side of the end cover 120. When the end cover 120 is connected to the top of the housing 100, the second sealing gasket 422 is compressed to form a sealing layer. The second sealing gasket 422 and the first sealing gasket 421 above and below the transparent plate 410 can form a double seal to prevent external moisture, dust and corrosive gases from entering below the transparent plate 410 through the hollow part, thus protecting the display screen 510.

[0049] Preferably, such as Figures 1-3 As shown, the end cap 120 is threaded to the top outer wall of the housing 100; the threaded connection between the end cap 120 and the top outer wall of the housing 100 not only provides mechanical fastness, but also ensures that the sealing gasket can be evenly stressed during installation, and the threaded connection allows the end cap 120 to be easily tightened or loosened.

[0050] Specifically, the aforementioned elastic wire plug 310 is made of rubber or other similar elastic materials.

[0051] Specifically, the transparent plate 410 is a glass panel, and an information plate 430 is provided between the bottom side of the transparent plate 410 and the sealing plug 200. The edge of the information plate 430 is snapped into the first sealing ring 211. The information plate 430 has a hollow part that exposes the display screen 510. Information such as product information, operation method or precautions can be recorded on the information plate 430.

[0052] Refer to together Figures 1-8A gas alarm includes the aforementioned display screen sealing structure. The gas alarm comprises a control unit and a sensor. A mounting hole 110 is provided on the bottom inner side of the housing 100. The sensor connection end is sealed within the mounting hole 110, and the detection part is located outside the housing. The control unit is installed inside the housing 100, and the control unit and sensor are electrically connected via a cable. The control unit receives detection information from the sensor and sends an alarm trigger signal based on the detection information. The sensor can detect the underground environment in real time and transmit the detection signal to the control unit, which then sends an alarm trigger signal to achieve an early warning effect. When maintenance or component replacement is required, simply open the end cover 120 and remove the sealing plug 200 to easily access the components inside the housing 100 without a complex disassembly process. This solution, through the multiple sealing designs of the sealing plug 200, end cover 120, and sealing elements, effectively resists the intrusion of moisture and corrosive gases, extends the service life of the equipment, and facilitates installation and maintenance.

[0053] Preferably, such as Figure 3 and Figure 7 As shown, the control unit is a main board 500, which is fixedly connected to the bottom side of the sealing plug 200. It also includes a power supply unit 600, which is fixedly installed inside the housing 100, located between the sealing plug 200 and the bottom side of the housing 100. The main board 500, as the control unit, is fixedly connected to the bottom side of the sealing plug 200. When the sealing plug 200 is removed from the opening of the housing 100, the main board 500 can be removed simultaneously. When the sealing plug 200 is inserted into the opening of the housing 100, the main board 500 can be installed simultaneously. Specifically, the main board 500 is detachably connected to the bottom side of the sealing plug 200 via studs or other means. The power supply unit 600 provides stable power support for the entire alarm, ensuring the normal operation of components such as the main board 500, sensors, and display screen 510. Specifically, the power supply unit 600 is a battery fixedly connected to the bottom side of the housing 100.

[0054] Preferably, such as Figure 1 and Figure 2As shown, the sensors include a combustible gas detection sensor group 11, a liquid level sensor 12, a vibration sensor 13, and a manhole cover sensor 14. The combustible gas detection sensor group 11 is used to detect combustible gases in the gas alarm installation environment, the liquid level sensor 12 is used to detect the liquid level in the gas alarm installation environment, the vibration sensor 13 is used to detect the vibration in the gas alarm installation environment, and the manhole cover sensor 14 is used to detect the open status of the manhole cover in the gas alarm installation environment. Each sensor is sealed and installed in an independent mounting hole 110, ensuring that each sensor can operate independently in the underground environment without interfering with each other. By installing multiple sensors, the alarm can comprehensively monitor the underground environment, including gas concentration, water accumulation, vibration, and manhole cover status. Multi-dimensional monitoring can promptly detect potential safety hazards and improve the safety of underground facilities. Of course, the types and quantities of sensors can be selected according to the actual situation.

[0055] Preferably, such as Figure 1 and Figure 2 As shown, the gas alarm also includes an external antenna 15 electrically connected to the control unit. The external antenna 15 is sealed and installed on the bottom side of the housing 100. The external antenna 15 is sealed and installed on the bottom side of the housing 100. Through electrical connection with the control unit, it receives and transmits wireless signals. The design of the external antenna 15 ensures stable signal transmission and enhances the transmission capability of wireless signals. It can maintain good communication even in complex underground environments and ensure that the signal can be reliably sent to the remote monitoring system. Specifically, the external antenna 15, like the aforementioned sensor, is sealed and installed in the mounting hole 110. The external antenna 15 and the aforementioned sensor are electrically connected to the control unit through a cable.

[0056] Preferably, such as Figure 1 , Figure 2 and Figure 8 As shown, the gas alarm also includes a clamp mounting structure, which includes a mounting plate 710 and an arc-shaped plate 720 that contact the outside of the housing 100. The mounting plate 710 and the arc-shaped plate 720 are detachably connected. A handle 121 is rotatably connected to the top side of the end cap 120. The clamp mounting structure is used to firmly fix the alarm to the well wall or other support. When installing the clamp mounting structure, the arc-shaped plate 720 and the mounting plate 710 are wrapped around the outer wall of the housing 100, and then the mounting plate 710 and the arc-shaped plate 720 are connected together. The mounting plate 710 is fixedly connected to the well wall or other support through the mounting hole 110 or other structure. The handle 121 is rotatably connected to the top side of the end cap 120, which facilitates the overall movement and handling of the gas alarm. Rotating the handle 121 can easily turn the end cap 120 to quickly remove or install the end cap 120.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sealing structure for the display screen of a gas alarm, characterized in that, Includes mounting blocks, display screen, and connecting wires; The mounting block has a wire passage hole that connects the top side and the bottom side. The wire passage hole is for inserting an elastic wire passage plug and is detachably connected to a wire passage extrusion member that extrudes the elastic wire passage plug inside. The free end of the wire connected to the display screen passes through the wire hole, the elastic wire plug, and the wire extrusion member. When the wire extrusion member extrudes the elastic wire plug, the elastic wire plug fits tightly against the wire and the wire hole.

2. The sealing structure for the display screen of a gas alarm as described in claim 1, characterized in that, The wire guide extrusion component is a wire guide bolt, which has a first through hole for the wire to pass through, and its outer wall is threaded to the inner wall of the wire guide hole.

3. The sealing structure for the display screen of a gas alarm as described in claim 1, characterized in that, The wires include multiple wires, and the elastic wire plug has multiple second holes for the wires to pass through. Each of the multiple wires corresponds to one of the multiple second holes.

4. The sealing structure for the display screen of a gas alarm as described in claim 1, characterized in that, The mounting block has a mounting groove on its top side for mounting the display screen, and the mounting groove is connected to the cable hole.

5. The sealing structure for the display screen of a gas alarm as described in claim 1, characterized in that, It also includes a housing, and the mounting block is a sealing plug; The top side of the housing is provided with an opening for inserting the sealing plug. The top of the housing is detachably connected with an end cap that restricts the removal of the sealing plug from the opening. A sealing element is provided between the bottom side of the end cap and the housing and the top side of the sealing plug, and the sealing element covers the gap between the housing and the sealing plug.

6. The sealing structure for the display screen of a gas alarm as described in claim 5, characterized in that, The outer wall of the sealing plug has multiple annular grooves for fitting sealing rings.

7. The sealing structure for the display screen of a gas alarm as described in claim 5, characterized in that, The sealing element is the first sealing gasket.

8. The sealing structure for the display screen of a gas alarm as described in claim 7, characterized in that, The end cap has a cutout portion that exposes the display screen, and a transparent plate is installed in the cutout portion; the transparent plate is located above the first sealing gasket, and a second sealing gasket is provided between the top side of the transparent plate and the inner bottom side of the end cap.

9. The sealing structure for the display screen of a gas alarm as described in claim 5, characterized in that, The end cap is threaded to the outer side wall of the top of the housing.

10. A gas alarm, characterized in that, Includes the display screen sealing structure for a gas alarm as described in any one of claims 1 to 9.

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