Fire extinguisher valve protection structure
By combining the safety pin and the cap, the problem of easy damage and manufacturing difficulties in the protection structure of fire extinguisher valves during long-term use is solved, achieving efficient long-term protection and anti-counterfeiting functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-04-07
AI Technical Summary
The existing valve protection structure of fire extinguishers is prone to damage during long-term use, and is difficult to manufacture and process, resulting in poor anti-counterfeiting effects.
It adopts a combination structure of safety bolt and cap. The cap and the insertion pin are detachably connected and fixed by snap-fit or threaded connection. The cap has anti-counterfeiting information and the connecting rib design allows for single use, avoiding the need to drill small holes in the insertion pin. It is assembled using an automatic pin insertion machine.
It improves the long-term protection effect of fire extinguisher valves, simplifies the production and processing process, prevents accidental spraying, and achieves anti-counterfeiting function.
Smart Images
Figure CN224085877U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fire extinguishers, and more specifically, to a fire extinguisher valve protection structure. Background Technology
[0002] The current valve protection structure of fire extinguishers mainly consists of a safety pin and a plastic pin. The safety pin is typically installed on the lifting handle or operating lever of the fire extinguisher, and uses an insertion locking mechanism to fix the operating parts of the fire extinguisher in an "inactive" state. Only in an emergency will the operator pull out the safety pin to release the lock. During normal storage or transportation, fire extinguishers may be subjected to accidental impacts or vibrations. The safety pin effectively prevents these external forces from causing accidental discharge of the fire extinguisher, avoiding unnecessary losses and dangers. During installation, the plastic pin needs to be inserted into a small hole on the smooth rod of the safety pin, and the small hole of the safety pin makes assembly relatively difficult.
[0003] Existing technology discloses an anti-counterfeiting safety structure for fire extinguisher valves, including a safety plug and an anti-counterfeiting label. The safety plug includes an insertion pin and a pull ring. The anti-counterfeiting label is affixed to the end of the insertion pin away from the pull ring and has a protrusion perpendicular to the axis of the insertion pin, with anti-counterfeiting information marked on the protrusion. This invention uses an anti-counterfeiting label instead of a conventional anti-counterfeiting plastic pin for anti-counterfeiting sealing, eliminating the need to machine a small hole in the safety plug and saving on the processing cost of the safety plug. However, the anti-counterfeiting label is prone to breakage or even detachment after long-term outdoor exposure, resulting in poor long-term protection for the fire extinguisher valve. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology in providing poor long-term protection for valves, and to provide a fire extinguisher valve protection structure that is easy to manufacture and provides good long-term protection for fire extinguisher valves.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A fire extinguisher valve protection structure is provided, including a safety bolt and a cap. The safety bolt includes an insertion pin and a pull ring disposed on the insertion pin. The cap is sleeved on the end of the insertion pin away from the pull ring, and the cap is detachably connected to the insertion pin.
[0007] This utility model discloses a fire extinguisher valve protection structure. Before use, an insertion pin is inserted into the through-hole of the fire extinguisher valve, preventing the fire extinguisher handle from being pressed down and avoiding accidental discharge after impact or vibration. At this time, a pull ring restricts the movement of one end of the insertion pin. Then, a cap is fitted onto the end of the insertion pin furthest from the pull ring. With the pull ring and cap positioned on opposite sides of the fire extinguisher handle, the movement of both ends of the insertion pin is restricted, effectively preventing accidental discharge during transport. When the fire extinguisher needs to be used, simply remove the cap from the insertion pin, and the insertion pin can be removed from the through-hole of the fire extinguisher valve via the pull ring. The fire extinguisher handle can then be pressed to use the fire extinguisher. By fitting the cap onto the insertion pin, there is no need to drill a small hole in the insertion pin. Furthermore, the cap can be automatically installed on the insertion pin using an automatic pin-fitting machine, facilitating the production and processing of the fire extinguisher valve protection structure. The cap is also less prone to damage outdoors, improving the long-term protection of the insertion pin.
[0008] Furthermore, the cap is snapped into the insertion pin. This snap-fit connection facilitates the use of an automatic pin-insertion machine to insert the cap into the pin during production, and also allows for easy removal of the cap from the pin when a fire extinguisher is needed.
[0009] Furthermore, the cap has a through hole, which includes a tapered portion. The insertion pin passes through the tapered portion, and the inner diameter of the tapered portion is not greater than the outer diameter of the insertion pin. The insertion pin is inserted into the cap from the larger end of the tapered portion, and the insertion pin presses against the tapered portion, compressing it and thus engaging the cap with the insertion pin.
[0010] Furthermore, the insertion pin includes an insertion section and a guide section connected in sequence, the pull ring is connected to the insertion section, the outer diameter of the guide section gradually decreases from one end near the insertion section to the other end away from the insertion section, and the insertion section passes through the tapered portion. This facilitates the insertion pin being inserted into the through hole of the cap.
[0011] Furthermore, a limiting ring is provided at the connection between the insertion section and the guide section. The outer diameter of the limiting ring is larger than the inner diameter of the small opening of the tapered portion, and the limiting ring abuts against the small opening of the tapered portion. By providing the limiting ring, after the insertion pin is inserted into the through hole, the limiting ring passes through the tapered portion and abuts against the small opening of the tapered portion. This facilitates uniform positioning of the cap insertion position during production and also facilitates stable connection of the cap to the insertion pin.
[0012] Furthermore, the through hole also includes a receiving portion, which communicates with the small end of the tapered portion. The inner diameter of the receiving portion is larger than the inner diameter of the small end of the tapered portion, and both the guide section and the limiting ring are located within the receiving portion. By providing the receiving portion, after the insertion pin is inserted into the through hole, the guide section and the limiting ring are located within the receiving portion, protecting the guide section and the limiting ring and preventing damage if they are exposed.
[0013] Furthermore, the cap includes a sleeve, an inner cylinder, and a connecting rib. The sleeve is fitted over the inner cylinder, and the sleeve and the inner cylinder are connected by the connecting rib. The through hole is located on the inner cylinder, and the sleeve is marked with anti-counterfeiting information. By marking the sleeve with anti-counterfeiting information and connecting the sleeve and the inner cylinder with the connecting rib, the connecting rib will break when the cap is pulled off the insertion pin, allowing the sleeve to separate from the inner cylinder. This makes the cap a disposable cap, thus preventing counterfeiting of the fire extinguisher.
[0014] Furthermore, the inner diameter of the tapered portion gradually increases from the end closest to the connecting rib to the end furthest from the connecting rib. Positioning the connecting rib closer to the end with the smaller through hole ensures that when the insert pin is inserted into the cap, the stress area is away from the connecting rib, preventing it from breaking; conversely, when the cap is pulled out, the stress area is close to the connecting rib, causing it to break.
[0015] Furthermore, the sleeve is provided with a protrusion, on which anti-counterfeiting information is marked. By providing a protrusion on the sleeve, it is easier for the cap to be manually removed from the insertion pin.
[0016] Furthermore, the inner diameter of the tapered portion gradually decreases from the end closest to the protrusion to the end furthest from the protrusion. This restriction on the position of the protrusion facilitates the identification of the small and large ends of the through-hole via the protrusion, making it easier to distinguish the insertion end of the cap during production and preventing mistaken identification.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. The present invention provides a fire extinguisher valve protection structure, which eliminates the need to drill small holes in the insertion pin by setting a cap that fits onto the insertion pin. At the same time, the cap can be installed on the insertion pin by an automatic pin-fitting machine, which facilitates the production and processing of the fire extinguisher valve protection structure. The cap is also not easily damaged outdoors, thus improving the long-term protection of the insertion pin.
[0019] 2. The present invention provides a fire extinguisher valve protection structure by marking anti-counterfeiting information on the sleeve and connecting the sleeve and the inner cylinder with connecting ribs. When the cap is pulled off the insertion pin, the connecting ribs will break, allowing the sleeve and the inner cylinder to separate, making the cap a disposable cap, thus preventing the fire extinguisher from being counterfeited. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the fire extinguisher valve protection structure installed on the fire extinguisher valve.
[0021] Figure 2 This is a first-view structural diagram of the valve protection structure of a fire extinguisher.
[0022] Figure 3 This is a schematic diagram of the cap's structure;
[0023] Figure 4 This is a second-view structural diagram of the valve protection structure of a fire extinguisher.
[0024] In the attached diagram: 100, safety bolt; 110, insertion pin; 111, insertion section; 112, guide section; 113, limiting ring; 120, pull ring; 200, cap; 210, sleeve; 211, protrusion; 220, inner cylinder; 221, tapered part; 222, receiving part; 230, connecting rib. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. The present utility model will be further described below with reference to specific embodiments. The accompanying drawings are only for illustrative purposes and represent only schematic diagrams, not actual pictures, and should not be construed as limiting the present patent. In order to better illustrate the embodiments of the present utility model, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. Furthermore, if the embodiments of this utility model involve descriptions such as "first" and "second," these descriptions are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include at least one of those features. In addition, the meaning of "and / or" in the text is that it includes three parallel options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.
[0027] Example 1
[0028] This embodiment is a first embodiment of a fire extinguisher valve protection structure, such as... Figure 1 As shown, the device includes a safety pin 100 and a cap 200. The safety pin 100 includes an insertion pin 110 and a pull ring 120 mounted on the insertion pin 110. The safety pin 100 is made of a high-hardness metal wire, cut into a short section, with one end straightened to serve as the insertion pin 110. No small hole is needed at the straightened end. The other end is bent into a pull ring 120. The safety pin 100 is a one-piece molded structure, facilitating production. The cap 200 is fitted onto the end of the insertion pin 110 furthest from the pull ring 120, and the cap 200 is detachably connected to the insertion pin 110. The cap 200 and the insertion pin 110 can be connected by a detachable connection method such as plug-in, snap-fit, or threaded connection.
[0029] The working principle of a fire extinguisher valve protection structure in this embodiment is as follows:
[0030] Before use, insert the insertion pin 110 into the through hole of the fire extinguisher valve to prevent the fire extinguisher handle from being pressed down, thus avoiding accidental discharge of the fire extinguisher after accidental impact or vibration. At this time, the pull ring 120 restricts the movement of one end of the insertion pin 110. Then, the cap 200 is placed on the end of the insertion pin 110 away from the pull ring. At this time, the pull ring 120 and the cap 200 are located on both sides of the fire extinguisher handle, respectively, restricting the movement of both ends of the insertion pin 110, thereby effectively preventing accidental discharge of the fire extinguisher during transportation. When the fire extinguisher needs to be used, simply remove the cap 200 from the insertion pin 110, and the insertion pin 110 can be removed from the through hole of the fire extinguisher valve through the pull ring 120. At this time, the fire extinguisher handle can be pressed to use the fire extinguisher to extinguish the fire. By setting the cap 200 to fit onto the insertion pin 110, there is no need to drill a small hole in the insertion pin 110. At the same time, the cap 200 can be automatically installed on the insertion pin 110 by an automatic pin-installing machine, realizing the automatic assembly of the fire extinguisher valve protection structure. This facilitates the production and processing of the fire extinguisher valve protection structure. The cap 200 is made of PVC material that is heat-resistant and corrosion-resistant, and the cap 200 is not easily damaged outdoors. Before fire extinguishing, the valve safety bolt 100 is firmly secured and will not fall off, improving the long-term protection effect of the insertion pin 110.
[0031] Example 2
[0032] This embodiment is the second embodiment of the fire extinguisher valve protection structure. This embodiment is similar to the first embodiment, except that, as shown in the example... Figure 2 As shown, the cap 200 is snapped into the insertion pin 110. The snap-fit connection between the cap 200 and the insertion pin 110 facilitates the use of an automatic pin-fitting machine to insert the cap 200 into the insertion pin 110 during production, and also makes it easy to remove the cap 200 directly from the insertion pin 110 when a fire extinguisher is needed.
[0033] like Figure 3 and Figure 4 As shown, the cap 200 has a through hole, which includes a tapered portion 221. An insertion pin 110 passes through the tapered portion 221, and the inner diameter of the tapered portion 221 is not greater than the outer diameter of the insertion pin 110. The insertion pin 110 is inserted into the cap 200 from the larger end of the tapered portion 221, and the insertion pin 110 presses against the tapered portion 221, compressing the tapered portion 221, thereby engaging the cap 200 with the insertion pin 110.
[0034] like Figure 4 As shown, the insertion pin 110 includes an insertion section 111 and a guide section 112 connected in sequence. A pull ring 120 is connected to the insertion section 111. The outer diameter of the guide section 112 gradually decreases from the end near the insertion section 111 to the end away from the insertion section 111. The insertion section 111 passes through the tapered portion 221. This facilitates the insertion pin 110 being inserted into the through hole of the cap 200.
[0035] A limiting ring 113 is provided at the connection between the insertion section 111 and the guide section 112. The outer diameter of the limiting ring 113 is larger than the inner diameter of the small end of the tapered portion 221, and the limiting ring 113 abuts against the small end of the tapered portion 221. By setting the limiting ring 113, after the insertion pin 110 is inserted into the through hole, the limiting ring 113 passes through the tapered portion 221 and abuts against the small end of the tapered portion 221. This facilitates the uniform positioning of the cap 200 during production and also facilitates the stable connection of the cap 200 to the insertion pin 110.
[0036] like Figure 3 and Figure 4 As shown, the through hole also includes a receiving portion 222, which communicates with the small end of the tapered portion 221. The inner diameter of the receiving portion 222 is larger than the inner diameter of the small end of the tapered portion 221. The guide section 112 and the limiting ring 113 are both located within the receiving portion 222. By providing the receiving portion 222, after the insertion pin 110 is inserted into the through hole, the guide section 112 and the limiting ring 113 are located within the receiving portion 222, protecting the guide section 112 and the limiting ring 113 and preventing them from being exposed and damaged.
[0037] Example 3
[0038] This embodiment is the third embodiment of the fire extinguisher valve protection structure. This embodiment is similar to embodiment two, except that, as shown in the example... Figure 3 As shown, the cap 200 includes a sleeve 210, an inner cylinder 220, and a connecting rib 230. The sleeve 210 is fitted over the inner cylinder 220, and the sleeve 210 and the inner cylinder 220 are connected by the connecting rib 230. The thickness of the connecting rib 230 is less than the thickness of the sleeve 210 and the inner cylinder 220. The thickness of the connecting rib 230 is specifically designed so that when the cap 200 is removed, the connecting rib 230 breaks, allowing the sleeve 210 to separate from the inner cylinder 220. A through hole is provided on the inner cylinder 220. Figure 2 As shown, anti-counterfeiting information is marked on the sleeve 210. By marking anti-counterfeiting information on the sleeve 210 and connecting the sleeve 210 and the inner cylinder 220 through the connecting rib 230, when the cap 200 is pulled off the insertion pin 110, the connecting rib 230 will break, allowing the sleeve 210 to separate from the inner cylinder 220, making the cap 200 a disposable cap 200, thus preventing the fire extinguisher from being counterfeited.
[0039] like Figure 3As shown, the inner diameter of the tapered portion 221 gradually increases from the end near the connecting rib 230 to the end away from the connecting rib 230. Positioning the connecting rib 230 near the smaller end of the tapered portion 221 ensures that when the insertion pin 110 is inserted into the cap 200, the stress area is away from the connecting rib 230, preventing the connecting rib 230 from breaking; conversely, when the cap 200 is pulled out, the stress area is close to the connecting rib 230, causing the connecting rib 230 to break.
[0040] like Figure 2 and Figure 3 As shown, the sleeve 210 is provided with a protrusion 211, and the protrusion 211 is marked with anti-counterfeiting information. By providing the protrusion 211 on the sleeve 210, the force is applied through the protrusion 211 when the cap 200 is pulled off, making it easier for the cap 200 to be manually pulled off the insertion pin 110.
[0041] The inner diameter of the tapered portion 221 gradually decreases from the end near the protrusion 211 to the end away from the protrusion 211. The position of the protrusion 211 is restricted, so that the small end and the large end of the tapered portion 221 can be easily identified by the protrusion 211, and the insertion end of the cap 200 can be easily identified during production to prevent mistaken identification.
[0042] The sleeve 210, inner cylinder 220, and through hole are coaxially arranged, and the cap 200 is integrally formed. The coaxial arrangement of the sleeve 210, inner cylinder 220, and through hole facilitates the injection molding of the cap 200, allowing the cap 200 to be formed in one step during production. Anti-counterfeiting information can be directly formed on the protrusion 211 by engraving.
[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A fire extinguisher valve protection structure, characterized in that, It includes a safety pin (100) and a cap (200). The safety pin (100) includes an insertion pin (110) and a pull ring (120) provided on the insertion pin (110). The cap (200) is sleeved on the end of the insertion pin (110) away from the pull ring (120). The cap (200) is detachably connected to the insertion pin (110).
2. The fire extinguisher valve protection structure according to claim 1, characterized in that, The cap (200) engages with the insertion pin (110).
3. The fire extinguisher valve protection structure according to claim 2, characterized in that, The cap (200) has a through hole, the through hole includes a tapered portion (221), the insertion pin (110) passes through the tapered portion (221), and the inner diameter of the tapered portion (221) is not greater than the outer diameter of the insertion pin (110).
4. The fire extinguisher valve protection structure according to claim 3, characterized in that, The insertion pin (110) includes an insertion section (111) and a guide section (112) connected in sequence. The pull ring (120) is connected to the insertion section (111). The outer diameter of the guide section (112) gradually decreases from one end near the insertion section (111) to the other end away from the insertion section (111). The insertion section (111) passes through the tapered portion (221).
5. The fire extinguisher valve protection structure according to claim 4, characterized in that, A limiting ring (113) is provided at the connection between the insertion section (111) and the guide section (112). The outer diameter of the limiting ring (113) is larger than the inner diameter of the small end of the tapered part (221). The limiting ring (113) abuts against the small end of the tapered part (221).
6. The fire extinguisher valve protection structure according to claim 5, characterized in that, The through hole also includes a receiving portion (222), which is connected to the small end of the tapered portion (221). The inner diameter of the receiving portion (222) is larger than the inner diameter of the small end of the tapered portion (221). The guide section (112) and the limiting ring (113) are both located inside the receiving portion (222).
7. The fire extinguisher valve protection structure according to any one of claims 3 to 6, characterized in that, The cap (200) includes a sleeve (210), an inner cylinder (220), and a connecting rib (230). The sleeve (210) is fitted over the inner cylinder (220), and the sleeve (210) and the inner cylinder (220) are connected by the connecting rib (230). The through hole is provided on the inner cylinder (220), and anti-counterfeiting information is marked on the sleeve (210).
8. The fire extinguisher valve protection structure according to claim 7, characterized in that, The inner diameter of the tapered portion (221) gradually increases from the end near the connecting rib (230) to the end away from the connecting rib (230).
9. The fire extinguisher valve protection structure according to claim 7, characterized in that, The sleeve (210) is provided with a protrusion (211), and the protrusion (211) is marked with anti-counterfeiting information.
10. The fire extinguisher valve protection structure according to claim 9, characterized in that, The inner diameter of the tapered portion (221) gradually decreases from the end near the protrusion (211) to the end away from the protrusion (211).