Quickly open and close fire helmet face shield structure

Abstract

The utility model discloses a fire helmet face guard structure of quick opening and closing relates to fire fighting equipment technical field. The utility model discloses a fire helmet, the both sides wall rotation of fire helmet is inserted with pivot, and the end of two pivots is fixedly connected with fire face guard through bolt, and the surface of pivot is equipped with reset spring, and the both ends of reset spring are fixedly connected with fire helmet and pivot respectively. The utility model discloses, and fire face guard can be realized opening and closing around pivot rotation, and the reset spring on pivot is stored elastic potential energy when fire face guard is manually closed, and the restoring force of reset spring can assist fire face guard to open quickly when locking mechanism carries out locking removal, realizes quick opening, and locking mechanism is used for locking when fire face guard closes through the cooperation with armature pick, prevents accidental opening, and magnetic attraction fixing mechanism is used for when fire face guard opens to the maximum angle, through the magnetic force adsorption armature pick, makes it stably keep in opening position.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, specifically to a quick-opening and closing fire helmet visor structure. Background Technology

[0002] Fire helmets are key personal protective equipment for firefighters in firefighting and rescue missions, and their visor structure is directly related to the firefighter's vision protection and facial protection.

[0003] Currently, most fire helmets on the market use a traditional face shield structure, which usually requires firefighters to manually pull the face shield down from the top when necessary, making it rather cumbersome to open.

[0004] Therefore, a quick-opening and closing fire helmet visor structure is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a quick-opening and closing fire helmet visor structure in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution: A quick-opening and closing fire helmet visor structure includes a fire helmet, with rotating shafts rotatably inserted into both side walls of the fire helmet. A fire visor is bolted to the ends of the two rotating shafts. A return spring is sleeved on the surface of each rotating shaft, with both ends of the return spring fixedly connected to the fire helmet and the rotating shaft, respectively. An armature lever is fixedly sleeved at the end of each rotating shaft. A locking mechanism and a magnetic fixing mechanism are respectively provided on the other side wall of the fire helmet. The locking mechanism locks the armature lever when the fire visor is closed, and the magnetic fixing mechanism magnetically fixes the armature lever when the fire visor is open.

[0007] Furthermore, the locking mechanism includes plug-in rings fixedly installed on both sides of the fire helmet, and a frame corresponding to the plug-in rings. A locking rod is movably plugged into the frame, and a handle is fixedly installed at the end of the locking rod. A spring is sleeved on the surface of the locking rod, and the two ends of the spring are fixedly connected to the frame and the handle, respectively.

[0008] Furthermore, the end of the locking rod is inserted into the inside of the plug ring, and the locking rod is used to block the rotation of the armature lever, and to limit and lock the fire mask when it is closed.

[0009] Furthermore, the magnetic fixing mechanism includes protrusions fixedly installed on both sides of the fire helmet, the top surface of the protrusions having an installation groove, and a strong magnet being fixedly installed in the installation groove.

[0010] Furthermore, the strong magnet and the armature lever, under the action of magnetic force, are used to fix the armature lever after the fire mask is opened.

[0011] Furthermore, the surface of the armature lever is provided with anti-slip patterns to increase the friction during operation by firefighters.

[0012] The beneficial effects of this utility model are as follows: Fire helmets have fire masks mounted on both sides of the helmet via pivots, allowing them to rotate and open / close. A return spring mounted on the pivot stores elastic potential energy when the fire mask is manually closed. When the locking mechanism is released, the spring's restoring force helps the fire mask spring open quickly. The locking mechanism, in conjunction with an armature lever, locks the fire mask when closed, preventing accidental opening. Opening is achieved by simply pulling the locking part of the locking mechanism. A magnetic fixing mechanism, when the fire mask is opened to its maximum angle, magnetically holds the armature lever in place, keeping it stably in the open position. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a utility model Figure 2 Enlarged view of part A; Figure 4 This is a schematic diagram of the fire-fighting face shield of this utility model in the closed state; Figure 5 This is a partial sectional view of the present invention; Reference numerals: 1. Fire helmet; 2. Rotating shaft; 3. Fire mask; 4. Return spring; 5. Armature lever; 6. Locking mechanism; 601. Insertion ring; 602. Frame; 603. Locking rod; 604. Handle; 605. Spring; 7. Magnetic fixing mechanism; 701. Protrusion; 702. Mounting groove; 703. Strong magnet. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. 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, they should not be construed as limitations on this utility model.

[0018] like Figures 1 to 5 As shown, a quick-opening and closing fire helmet hood structure includes a fire helmet 1, with rotating shafts 2 rotatably inserted into both side walls of the fire helmet 1. The ends of the two rotating shafts 2 are fixedly connected to the fire helmet 3 by bolts. A return spring 4 is sleeved on the surface of the rotating shaft 2. The two ends of the return spring 4 are fixedly connected to the fire helmet 1 and the rotating shaft 2 respectively. An armature lever 5 is fixedly sleeved on the end of the rotating shaft 2. A locking mechanism 6 and a magnetic fixing mechanism 7 are respectively provided on the other side wall of the fire helmet 1. The locking mechanism 6 is used to lock the armature lever 5 when the fire helmet 3 is closed. like Figure 2 and Figure 3 As shown, specifically, the locking mechanism 6 includes a plug ring 601 fixedly installed on both sides of the fire helmet 1, and a frame 602 corresponding to the plug ring 601. A locking rod 603 is movably plugged into the frame 602. A handle 604 is fixedly installed at the end of the locking rod 603. A spring 605 is sleeved on the surface of the locking rod 603. The two ends of the spring 605 are fixedly connected to the frame 602 and the handle 604, respectively.

[0019] More specifically, the insertion ring 601 is fixed to both sides of the fire helmet 1, and a locking hole is formed inside it. The frame 602 provides a guide for the locking rod 603. The elastic force of the spring 605 continuously acts on the handle 604 at one end of the locking rod 603, pushing the locking rod 603 to tend to move towards the insertion ring 601. In the natural state, the end of the locking rod 603 is inserted into the interior of the insertion ring 601 under the action of the spring 605, forming a mechanical lock. When opening, simply pull the handle 604 to drive the spring 605 to the maximum position to release the lock on the armature lever 5 and open the fire helmet 3.

[0020] In practical applications, the end of the locking rod 603 is inserted into the inside of the plug ring 601. The locking rod 603 is used to block the rotation of the armature lever 5 and to limit and lock the fire mask 3 when it is closed.

[0021] More specifically, when the fire mask 3 is in the closed state, the locking rod 603 is on the rotation path of the armature lever 5, thereby preventing the rotation of the shaft 2 and achieving reliable locking of the fire mask 3. When unlocking is required, the firefighter pulls the handle 604 outward to overcome the elastic force of the spring 605 and pull the locking rod 603 out of the insertion ring 601, releasing the obstruction of the armature lever 5. The fire mask 3 can then quickly open under the action of the return spring 4.

[0022] The magnetic fixing mechanism 7 is used to magnetically fix the armature lever 5 when the fire mask 3 is opened; like Figure 3 As shown, specifically, the magnetic fixing mechanism 7 includes protrusions 701 fixedly installed on both sides of the fire helmet 1. The top surface of the protrusions 701 is provided with mounting grooves 702, and strong magnets 703 are fixedly installed in the mounting grooves 702.

[0023] More specifically, the position of the protrusion 701 corresponds to the position of the armature lever 5 when the fire mask 3 is opened to the maximum angle. When the armature lever 5 rotates to the vicinity of the strong magnet 703 as the fire mask 3 is opened, the strong magnet 703 attracts the armature lever 5 to achieve magnetic fixation.

[0024] In practical applications, the strong magnet 703 and the armature lever 5 are used to fix the armature lever 5 after the fire mask 3 is opened under the action of magnetic force.

[0025] More specifically, the armature lever 5 is made of a material that can be attracted by magnetism. When the fire mask 3 is opened under the drive of the return spring 4 and rotated to near the maximum angle, the strong magnetic attraction will quickly capture the armature lever 5, making it fit tightly against the protrusion 701, thereby keeping the fire mask 3 firmly in the fully open state.

[0026] In practical applications, the surface of the armature lever 5 is provided with anti-slip patterns to increase the friction during operation by firefighters.

[0027] More specifically, when firefighters need to manually close the fire mask 3, they can use their fingers to flick the armature lever 5. The anti-slip pattern on the surface significantly increases the friction between the fingers and the lever, providing a reliable operating feel even under adverse conditions such as firefighters wearing heavy gloves, having wet hands, or having foam on their hands, ensuring the accuracy and efficiency of the action.

[0028] In summary: Fire helmet 1 has fire masks 3 mounted on both sides of the helmet via pivot 2, allowing the fire masks 3 to rotate around pivot 2 for opening and closing. The return spring 4, sleeved on pivot 2, stores elastic potential energy when the fire mask 3 is manually closed. When the locking mechanism 6 is released, the restoring force of the return spring 4 assists the fire mask 3 to quickly spring open, achieving rapid opening. The locking mechanism 6 is used to lock the fire mask 3 when it is closed by cooperating with the armature lever 5 to prevent accidental opening. To open, simply pull the locking part of the locking mechanism 6 to open the fire mask 3. The magnetic fixing mechanism 7 is used to magnetically attract the armature lever 5 when the fire mask 3 is opened to its maximum angle, keeping it stably in the open position.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-opening and closing fire helmet visor structure, characterized in that, The fire helmet (1) is rotatably connected to two side walls of the fire helmet (1). The ends of the two side walls of the fire helmet (1) are fixedly connected to the fire mask (3) by bolts. The surface of the side wall of the side wall of the fire helmet (2) is fitted with a return spring (4). The two ends of the return spring (4) are fixedly connected to the fire helmet (1) and the side wall of the side wall of the fire helmet (1) respectively. The end of the side wall of the side wall of the fire helmet (1) is fixedly fitted with an armature lever (5). The other side wall of the fire helmet (1) is respectively provided with a locking mechanism (6) and a magnetic fixing mechanism (7). The locking mechanism (6) is used to lock the armature lever (5) when the fire mask (3) is closed. The magnetic fixing mechanism (7) is used to magnetically fix the armature lever (5) when the fire mask (3) is open.

2. The quick-opening and closing fire helmet visor structure according to claim 1, characterized in that, The locking mechanism (6) includes a plug ring (601) fixedly installed on both sides of the fire helmet (1) and a frame (602) corresponding to the plug ring (601). A locking rod (603) is movably plugged into the frame (602). A handle (604) is fixedly installed at the end of the locking rod (603). A spring (605) is sleeved on the surface of the locking rod (603). The two ends of the spring (605) are fixedly connected to the frame (602) and the handle (604) respectively.

3. The quick-opening and closing fire helmet visor structure according to claim 2, characterized in that, The end of the locking rod (603) is inserted into the inside of the plug ring (601). The locking rod (603) is used to block the rotation of the armature lever (5) and to limit and lock the fire mask (3) when it is closed.

4. The quick-opening and closing fire helmet visor structure according to claim 1, characterized in that, The magnetic fixing mechanism (7) includes protrusions (701) fixedly installed on both sides of the fire helmet (1). The top surface of the protrusions (701) is provided with mounting grooves (702), and strong magnets (703) are fixedly installed in the mounting grooves (702).

5. The quick-opening and closing fire helmet visor structure according to claim 4, characterized in that, The strong magnet (703) and the armature lever (5) are used to fix the armature lever (5) after the fire mask (3) is opened under the action of magnetic force.

6. The quick-opening and closing fire helmet visor structure according to claim 1, characterized in that, The surface of the armature lever (5) is provided with anti-slip patterns to increase the friction force when firefighters operate it.

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