A new domestic safety fire extinguisher

Abstract

The application provides a novel household safety fire extinguisher, which comprises a bottle body, a valve seat arranged at the bottle mouth of the bottle body, a valve rod arranged on the valve seat, a spout arranged on the valve seat, a lock slot arranged on the valve rod, a lock rod arranged in the valve seat, the lock rod being arranged on the side surface of the valve rod, an unlocking gap being arranged on the side of the lock rod close to the valve rod, the lock rod being arranged to be capable of aligning the unlocking gap with the valve rod by sliding and the valve rod being capable of vertically sliding or the rod body being connected with the lock slot, one end of the lock rod protruding out of the valve seat, a connecting female head being protruded outwards on the valve seat corresponding to the position of the spout, the protruding end of the lock rod being arranged in the connecting female head, and further comprising a separately arranged spout pipe, one end of the spout pipe being provided with a connecting male head, the connecting male head being connected with the connecting female head in a matched mode, and the outer end surface of the connecting male head being capable of pressing against the protruding end of the lock rod. The safety fire extinguisher locks the valve rod through the hidden lock rod, avoids the fire extinguisher from being accidentally touched, and improves the household safety of the fire extinguisher.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguisher technology, specifically a new type of household safety fire extinguisher. Background Technology

[0002] There are many types of fires, among which household fires are the most common, especially in cities where people live in close proximity. Household fires often spread to other households, causing more severe property damage. However, most household fires can be extinguished in their early stages with a fire extinguisher. As people become more safety-conscious, it is becoming increasingly common to have fire extinguishers at home, with portable dry powder fire extinguishers being the most frequently used type.

[0003] Existing portable dry powder fire extinguishers are equipped with a safety pin to lock the handle, and one end of the safety pin has a plastic seal to secure it, preventing it from being pulled out arbitrarily. When the fire extinguisher needs to be used, simply pull the safety pin forcefully to break the plastic seal.

[0004] However, because the safety pin and plastic seal are exposed, children or pets in the home may accidentally break the plastic seal or pull out the safety pin, causing the fire extinguisher to malfunction or spray accidentally. In addition, the safety pin is a separate small part that may be lost after being pulled out, affecting subsequent maintenance, and there is even a risk of children or pets accidentally swallowing it, posing a safety hazard. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model provides a novel household safety fire extinguisher.

[0006] The technical solution of this utility model is as follows:

[0007] A novel household safety fire extinguisher includes a bottle body with a valve seat at the bottle opening. The valve seat has a valve stem, a handle, and a pressure handle. The pressure handle is hinged to the valve seat and can press the valve stem to slide vertically. The valve seat also has a nozzle for connecting a nozzle pipe. The valve stem has a locking groove, and the valve seat has a locking rod located on the side of the valve stem, extending laterally and capable of sliding axially. The locking rod has an unlocking notch on the side near the valve stem. The locking rod is configured to slide so that the unlocking notch aligns with the valve stem and the valve stem can slide vertically, or the rod body can engage with the locking groove.

[0008] One end of the locking rod protrudes from the valve seat and is close to the edge of the nozzle, while the other end is equipped with a spring. A connecting nut protrudes outward from the valve seat corresponding to the nozzle position. The connecting nut is coaxial with the nozzle, and the protruding end of the locking rod is located inside the connecting nut.

[0009] It also includes separately set nozzles, one end of which is provided with a male connector, which is connected to a female connector, and the outer end face of the male connector can press against the protruding end of the locking rod.

[0010] The safety fire extinguisher provided in this application improves the safety of the fire extinguisher by installing a locking rod inside the valve seat to lock the valve rod, preventing the locking rod from being exposed and avoiding accidental contact or damage by children or pets.

[0011] In the above scheme, the locking rod is a rectangular rod.

[0012] In the above scheme, the length of the unlocking notch in the axial direction of the locking rod is greater than or equal to the valve stem diameter.

[0013] In the above scheme, the lock groove is an annular groove.

[0014] In the above scheme, the valve seat is provided with a guide channel, and the valve stem slides in the guide channel. The locking groove is always located in the guide channel to prevent the locking groove from entering the channel where the extinguishing agent is sprayed, which would cause the locking groove to be contaminated with the extinguishing agent and affect the locking of the locking rod and the locking groove.

[0015] In the above scheme, a sealing ring is provided on the valve stem near the lower edge of the lock groove to prevent the extinguishing agent from entering the lock groove or the sliding gap of the lock rod, thus affecting the unlocking and locking action of the lock rod.

[0016] Furthermore, a locking pin is slidably connected to the valve seat. The locking pin is I-shaped and includes a locking block located inside the valve seat and a lever located outside the valve seat. The locking pin slides laterally, allowing the locking block to slide into or out of the locking groove. The locking pin and the locking rod work together to form a two-stage locking system, further improving the safety of the fire extinguisher against accidental contact or misoperation. It also further prevents children or pets from accidentally turning on the fire extinguisher while playing, which could lead to extinguisher failure or safety accidents.

[0017] In the above scheme, the sliding directions of the locking pin and the locking rod are parallel to each other.

[0018] Furthermore, the male connector and the female connector are connected by threads.

[0019] Furthermore, the bottle is equipped with a retaining strap, which allows the nozzle to be secured to the retaining strap.

[0020] This utility model provides a novel household safety fire extinguisher that uses a concealed locking lever to lock the valve stem. Locking and unlocking are achieved through the safe removal and disassembly of the nozzle, preventing children or pets from accidentally activating the extinguisher by touching the locking lever, thus improving household safety. Furthermore, compared to traditional fire extinguishers that require breaking a plastic seal to unlock, the locking lever allows for repeated use of the valve seat, eliminating the need to purchase spare plastic seals and reducing resource waste. Attached Figure Description

[0021] In the attached diagram:

[0022] Figure 1 A schematic diagram of a safety fire extinguisher;

[0023] Figure 2 A partial cross-sectional view of a safety fire extinguisher;

[0024] Figure 3 This is a cross-sectional view of the valve seat from above.

[0025] Figure 4 This is a partially enlarged schematic diagram of Example 2;

[0026] Figure 5 This is a top view of the valve seat in Embodiment 2.

[0027] The components represented by the various reference numerals in the diagram are:

[0028] 1. Bottle body; 2. Valve seat; 21. Nozzle; 22. Connecting female head; 23. Guide channel; 3. Valve stem; 31. Locking groove; 32. Sealing ring; 4. Lifting handle; 5. Pressing handle; 6. Spray pipe; 61. Connecting male head; 7. Locking rod; 71. Unlocking notch; 8. Spring; 9. Fixing strap; 10. Locking pin; 101. Locking block; 102. Pulling block. Detailed Implementation

[0029] Example 1:

[0030] like Figures 1 to 3 As shown, this utility model embodiment provides a novel household safety fire extinguisher, including a bottle body 1. A valve seat 2 is provided at the bottle mouth of the bottle body 1. A valve stem 3, a handle 4, and a pressure handle 5 are provided on the valve seat 2. The pressure handle 5 is hinged to the valve seat 2 and can press the valve stem 3 to slide vertically. The valve seat 2 is also provided with a nozzle 21 for connecting a nozzle 6. A locking groove 31 is provided on the valve stem 3. A locking rod 7 is provided inside the valve seat 2. The locking rod 7 is located on the side of the valve stem 3, extends laterally, and can slide axially. The locking rod 7 is provided with an unlocking notch 71 on the side near the valve stem 3. The locking rod 7 is configured to slide so that the unlocking notch 71 is aligned with the valve stem 3 and the valve stem 3 can slide vertically, or the rod body is engaged with the locking groove 31.

[0031] One end of the locking rod 7 protrudes out of the valve seat 2 and is close to the edge of the nozzle 21, while the other end is provided with a spring 8. A connecting female head 22 protrudes outward from the valve seat 2 corresponding to the position of the nozzle 21. The connecting female head 22 is coaxial with the nozzle 21, and the protruding end of the locking rod 7 is located inside the connecting female head 22.

[0032] It also includes a separately set nozzle 6, one end of which is provided with a male connector 61, which is connected to the female connector 22, and the outer end face of the male connector 61 can press against the protruding end of the locking rod 7.

[0033] The safety fire extinguisher provided in this embodiment is based on a traditional fire extinguisher (see existing portable dry powder fire extinguishers). It eliminates the exposed safety pin and replaces it with a concealed locking lever 7 to lock the valve stem 3. Locking and unlocking are achieved through the safety and disassembly of the nozzle 6, preventing children or pets from accidentally activating the extinguisher by touching the locking lever 7, thus improving the home safety of the fire extinguisher. Furthermore, compared to traditional fire extinguishers that require breaking a plastic seal to unlock, locking the valve stem 3 with the locking lever 7 allows for repeated use of the valve seat 2, eliminating the need to purchase spare plastic seals and reducing resource waste.

[0034] The core design concept of this application lies in improving the locking structure of a safety fire extinguisher. Therefore, the rest of the fire extinguisher, excluding the locking and unlocking structures, will not be described in detail here. However, those skilled in the art, in combination with the structural composition of traditional fire extinguishers and the description of this application, should be able to implement the technical solution of this application.

[0035] Specific combination Figure 2 and Figure 3 As shown, the valve seat 2 is provided with an extinguishing agent spray channel, which connects the inside and outside of the cylinder 1. The port connecting the outside of the cylinder 1 is the nozzle 21, which is located on the side of the valve seat 2. The valve seat 2 is also provided with a guide channel 23, which extends vertically. The lower end of the guide channel 23 connects to the extinguishing agent spray channel, and the upper end passes through the top of the valve seat 2. The valve stem 3 is slidably engaged with the guide channel 23.

[0036] The locking groove 31 is set on the stem of the valve stem 3 located in the guide channel 23. The locking groove 31 is always located in the guide channel 23, that is, whether the fire extinguisher is in use or not, the locking groove 31 is always located in the guide channel 23, to prevent the locking groove 31 from entering the fire extinguishing agent spray channel and causing the locking groove 31 to be contaminated with fire extinguishing agent, which would affect the locking rod 7 and the locking groove 31.

[0037] In addition, the valve stem 3 is provided with a sealing ring 32 near the lower edge of the locking groove 31 to further prevent the extinguishing agent from entering the sliding gap of the locking groove 31 or the locking rod 7, affecting the sliding of the locking rod 7 and making the unlocking and locking actions difficult.

[0038] In this embodiment, the locking groove 31 is preferably an annular groove.

[0039] The locking lever 7 is located on the side of the valve stem 3, extending horizontally, and its height corresponds to the height of the locking groove 31. The unlocking notch 71 is located on the side of the locking lever 7 near the valve stem 3, and is set at a preset distance from both ends of the locking lever 7. When the fire extinguisher is not in use, the unlocking notch 71 is closer to the nozzle 21 relative to the valve stem 3, while the locking lever 7, which is further away from the nozzle 21 relative to the unlocking notch 71, is located in the locking groove 31, locking the valve stem 3 and preventing it from sliding vertically, thus locking the valve stem 3. At this time, the valve stem 3 cannot be pressed down, and therefore the fire extinguisher cannot be activated.

[0040] In this embodiment, the length of the unlocking notch 71 in the axial direction of the locking rod 7 is greater than or equal to the diameter of the valve rod 3, and the depth of the unlocking notch 71 is greater than the depth of the locking groove 31. When the locking rod 7 slides into the valve seat 2, the unlocking notch 71 gradually aligns with the valve rod 3. When the unlocking notch 71 is aligned with the valve rod 3, the locking rod 7 completely avoids the valve rod 3, no longer jams the valve rod 3, and releases the lock on the sliding of the valve rod 3. At this time, pressing down the valve rod 3 can trigger the spraying of the extinguishing agent.

[0041] The sliding direction of the locking rod 7 is consistent with its extension direction, and the normal of the nozzle 21 is parallel to it, so that the locking rod 7 can be smoothly pushed. The valve seat 2 is provided with a blind hole groove for the locking rod 7 to slide. One end of the locking rod 7 is inserted into the blind hole groove, and a spring 8 is provided between the locking rod 7 and the bottom of the blind hole groove. When the locking rod 7 and the valve stem 3 are no longer pressed, the spring force of the spring 8 will reset the locking rod 7 and lock the valve stem 3. A limiting part (not shown in the figure) can be provided in the blind hole groove to limit the extension length of the locking rod 7. For example, a limiting ring is provided at the port of the blind hole groove. The radial dimension of the part of the locking rod 7 near the extension end is smaller than the radial dimension of the rest. The limiting ring restricts the locking rod 7 in the blind hole groove and limits the extension length of the locking rod 7.

[0042] The other end of the locking lever 7 extends out of the valve seat 2, and the connecting female head 22 extends outward along the normal direction of the nozzle 21 and is concentric with the nozzle 21, that is, the center of the nozzle 21 is on the central axis of the connecting female head 22. The end of the locking lever 7 extending out of the valve seat 2 is located inside the connecting female head 22. The connecting female head 22 covers and hides the locking lever 7 to prevent children or pets from accidentally touching it and unlocking the fire extinguisher.

[0043] In this embodiment, the locking rod 7 is preferably a rectangular rod to prevent the locking rod 7 from rotating circumferentially.

[0044] In order to trigger the unlocking of the locking rod 7, this embodiment uses a separate nozzle 6. One end of the nozzle 6 is provided with a male connector 61, which is connected to the female connector 22. When the male connector 61 is inserted into the female connector 22, the outer end face of the male connector 61 abuts against and pushes the locking rod 7 to slide into the valve seat 2.

[0045] The male connector 61 has a through channel that passes through it. When the male connector 61 is inserted into the female connector 22, the through channel is tightly connected to the nozzle 21. The outer circumferential surface of the male connector 61 has a hand-tightening pattern to facilitate manual and quick connection of the nozzle 6 to the valve seat 2.

[0046] In this example, the male connector 61 and the female connector 22 are connected by a thread. However, in some other embodiments, the male connector 61 and the female connector 22 can also be connected by a snap-fit ​​mechanism.

[0047] In addition, the bottle is equipped with a fixing strap 9, and the nozzle 6 can be locked onto the fixing strap 9.

[0048] Furthermore, a rubber pad may be provided on the outer end face of the male connector 61 for sealing when the nozzle 6 is connected to the valve seat 2.

[0049] In this embodiment of the fire extinguisher, the nozzle 6 is removed from the fixing strap 9, the male connector 61 is aligned with the female connector 22 and inserted, then screwed to quickly connect the nozzle 6 to the valve seat 2. During the connection process between the male connector 61 and the female connector 22, the male connector 61 pushes the locking lever 7 into the valve seat 2 until the connecting channel is tightly connected with the nozzle 21. At this time, the unlocking notch 71 is aligned with the valve stem 3, releasing the lock on the valve stem 3. Then, press the handle 5, and the valve stem 3 slides down, triggering the extinguishing agent to spray out. After use, release the handle 5, remove the nozzle 6, and the locking lever 7 slides out of the valve seat 2 under the action of the spring 8, locking the valve stem 3 again.

[0050] The safety fire extinguisher in this embodiment has a hidden locking structure to prevent accidental contact by children or pets. It can also be quickly unlocked by connecting the nozzle 6, thus enabling the fire extinguisher to be used quickly.

[0051] Example 2:

[0052] like Figure 4 and Figure 5 As shown, the safety fire extinguisher provided in this embodiment is basically the same as that in embodiment one. The difference is that a locking pin 10 is also slidably connected on the valve seat 2. The locking pin 10 is I-shaped and includes a locking block 101 located inside the valve seat 2 and a lever 102 located outside the valve seat 2, as well as a connecting rod connecting the locking block 101 and the lever 102. The valve seat 2 is provided with a sliding groove that cooperates with the locking pin 10 and allows the locking pin 10 to slide.

[0053] The toggle block 102 is exposed outside the valve body and is used to move the locking pin 10 laterally. The locking block 101 is located inside the valve seat 2 and slides with the toggle block 102. It can slide into the locking groove 31 to lock the valve stem 3, and can also slide out of the locking groove 31 to release the lock on the valve stem 3.

[0054] In this embodiment, the sliding directions of the locking pin 10 and the locking rod 7 are parallel to each other, and the locking pin 10 and the locking rod 7 are located on both sides of the valve stem 3.

[0055] In this embodiment of the fire extinguisher, when in use, the nozzle 6 is first connected to the valve seat 2 so that the locking rod 7 unlocks the valve stem 3. Then, the locking pin 10 is pushed to unlock the valve stem 3, and only then can the valve stem 3 be pressed.

[0056] In this embodiment, the locking pin 10 and the locking rod 7 work together to lock the valve stem 3, forming a two-stage locking. A single operation of the locking pin 10 or the locking rod 7 cannot ultimately unlock the valve stem 3, which further improves the safety of the fire extinguisher against accidental contact or misoperation, and also further avoids the fire extinguisher from being accidentally turned on by children or pets while playing, which could lead to the fire extinguisher becoming ineffective or causing a safety accident.

Claims

1. A novel household safety fire extinguisher, comprising a bottle body (1), a valve seat (2) provided at the bottle mouth of the bottle body (1), a valve stem (3), a handle (4) and a pressure handle (5) provided on the valve seat (2), the pressure handle (5) being hinged to the valve seat (2) and capable of pressing the valve stem (3) to slide vertically, and a nozzle (21) provided on the valve seat (2) for connecting a nozzle pipe (6), characterized in that, The valve stem (3) is provided with a locking groove (31), and the valve seat (2) is provided with a locking rod (7). The locking rod (7) is located on the side of the valve stem (3), extends laterally, and can slide axially. The locking rod (7) is provided with an unlocking notch (71) on the side near the valve stem (3). The locking rod (7) is configured to slide so that the unlocking notch (71) is aligned with the valve stem (3) and the valve stem (3) can slide vertically, or the rod body is engaged with the locking groove (31). One end of the locking rod (7) protrudes out of the valve seat (2) and is close to the edge of the nozzle (21), and the other end is provided with a spring (8). A connecting female head (22) protrudes outward on the valve seat (2) corresponding to the position of the nozzle (21). The connecting female head (22) is coaxial with the nozzle (21), and the protruding end of the locking rod (7) is located inside the connecting female head (22). It also includes a separately set nozzle (6), one end of which is provided with a male connector (61), which is connected to a female connector (22), and the outer end face of the male connector (61) can press against the protruding end of the locking rod (7).

2. A novel household safety fire extinguisher as described in claim 1, characterized in that, The locking bar (7) is a rectangular bar.

3. A novel household safety fire extinguisher as described in claim 2, characterized in that, The length of the unlocking notch (71) in the axial direction of the locking rod (7) is greater than or equal to the diameter of the valve stem (3).

4. A novel household safety fire extinguisher as described in claim 3, characterized in that, The locking groove (31) is an annular groove.

5. A novel household safety fire extinguisher as described in claim 4, characterized in that, The valve seat (2) is provided with a guide channel (23), the valve stem (3) slides with the guide channel (23), and the locking groove (31) is always located in the guide channel (23).

6. A novel household safety fire extinguisher as described in claim 5, characterized in that, The valve stem (3) has a sealing ring (32) located near the lower edge of the lock groove (31).

7. A novel household safety fire extinguisher as described in claim 1, characterized in that, A locking pin (10) is slidably connected to the valve seat (2). The locking pin (10) is I-shaped and includes a locking block (101) located inside the valve seat (2) and a lever block (102) located outside the valve seat (2). The locking pin (10) slides laterally, which allows the locking block (101) to slide into or out of the locking groove (31).

8. A novel household safety fire extinguisher as described in claim 7, characterized in that, The sliding directions of the locking pin (10) and the locking rod (7) are parallel to each other.

9. A novel household safety fire extinguisher as described in claim 1, characterized in that, The male connector (61) and the female connector (22) are connected by threads.

10. A novel household safety fire extinguisher as described in claim 1, characterized in that, The bottle is equipped with a fixing strap (9), and the nozzle (6) can be locked onto the fixing strap (9).

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