A fire axe

Abstract

The utility model relates to fire fighting equipment, concretely relates to a fire axe, including axe handle and the axe body that sets up in the one end of axe handle, the hollow structure of axe handle, is set with a folding mechanism in the axe handle, the folding mechanism includes the moving pipe of the sleeve setting in the inside of axe handle, the first sawtooth blade of rotation folding is embedded on the moving pipe, the first sawtooth blade is through the rotation pin of hollow structure and is rotationally arranged in the moving pipe end, is set with the connecting hole of a plurality of hole structure on the axe body, and the second sawtooth blade is rotationally arranged on the axe body, the utility model not only has the function that the traditional fire axe breaks and dismantles, but also has the function that assists the rope drop of fireman.

Description

Technical Field

[0001] This utility model relates to fire-fighting equipment, specifically a fire axe. Background Technology

[0002] Fire axes play an important role in firefighting. However, current fire axes only function as axes, which is limited in function. During firefighting, firefighters often need to rappel down from high-rise buildings to lower floors or the ground. The existing solution is for firefighters to secure the fire rope to a fixed object inside the room and then rappel down from the window. However, in actual firefighting, it is often difficult to find a suitable fixed object, which affects the progress of firefighting.

[0003] Therefore, there is an urgent need for a new type of multifunctional fire axe that not only has the traditional fire axe's demolition function, but also assists firefighters in rope descent. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a fire axe that not only has the traditional fire axe's demolition function but also assists firefighters in rope descent.

[0005] The present invention adopts the following technical solution:

[0006] A fire axe includes an axe handle and an axe body located at one end of the handle. The axe handle is hollow, and a folding mechanism is fitted inside the handle. The folding mechanism includes a movable tube fitted inside the handle, a first serrated blade rotatably folded and embedded in the movable tube, and the first serrated blade is rotatably positioned at the end of the movable tube via a hollow rotating pin. The axe body has several hole-like connecting holes, and a second serrated blade is rotatably positioned on the axe body. The end of the axe handle has a fastening mechanism for fastening the axe handle and the movable tube. This fastening mechanism adopts one of two schemes. In the first scheme, the fastening mechanism includes several deformation grooves surrounding a side wall of the axe handle opposite to the axe body, a first thread formed on the side wall of the axe handle at the deformation groove, and a nut threadedly connected to the first thread. The nut has a second thread adapted to the first thread and an extrusion body for compressing the deformation grooves. The second type of fastening mechanism includes a rotating seat fixed on the outer wall of the axe handle, a pressure handle rotatably mounted on the rotating seat, a pin rotatably mounted on the inner side of the pressure handle, a through hole opened on the side wall of the axe handle, and several positioning holes opened on the side wall of the movable tube and adapted to the pin and the through hole; the pressure handle and the second sawtooth blade are on the same side.

[0007] Furthermore, the axe body includes an axe head and a pickaxe head positioned opposite each other on the axe head; several through holes are provided on the axe handle; at the same time, when the first serrated blade and the second serrated blade are fully extended, they are on the same side of the axe handle and are uniformly at a 90-degree angle to the axe handle, and the first serrated blade, the second serrated blade and the axe handle are on the same plane.

[0008] Furthermore, in order to improve the extrusion efficiency of the deformation groove, the extrusion body is a hollow frustum structure fixed inside the nut, and the end of the axe handle is a conical surface structure. When the moving tube is pulled out from the axe handle, the extrusion body extrudes the end of the axe handle by rotating the nut, thereby achieving the positioning and fixation between the axe handle and the moving tube.

[0009] To ensure that the first and second serrated blades, when fully extended, form a 90-degree angle with the axe handle, a U-shaped base is provided at the end of the moving tube. The end of the first serrated blade is rotatably mounted on the base via a rotating pin, and a limiting block is provided at the end of the first serrated blade to abut and limit its movement against the base. A limiting groove is provided on the root side wall of the second serrated blade to engage and limit its movement with the axe body. When the first and second serrated blades are fully extended, the first serrated blade, axe handle, moving tube, and second serrated blade form a U-shaped clamping structure. This clamping structure engages with the wall (including but not limited to the edge of a window opening or a pillar). Firefighters use fire ropes and carabiners to form a rope descent through the hollow and connecting holes in the rotating pin, assisting them in the descent.

[0010] Preferably, to improve the reset capability of the first serrated blade and enhance its embedding ability into the wall when firefighters engage it (including but not limited to window opening edges and pillars), a reset torsion spring is provided between the first serrated blade and the base to reset the first serrated blade. To meet various needs, the shape of the connecting hole includes circular, elliptical, and regular hexagonal shapes; additionally, anti-slip stripes are provided on the outer wall of the nut, including but not limited to diamond-shaped stripes.

[0011] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: This utility model not only has the demolition function of a traditional fire axe, but also, when firefighters need to rappel from the outside of a building, the firefighter pulls the movable tube out of the axe handle to a suitable position, tightens the nut to fix the axe handle and the movable tube, and by unfolding the first serrated blade and the second serrated blade, a U-shaped clamp is formed to clamp the wall (including but not limited to the edge of the window opening and the column), and a rappelling rope is formed by the fire rope and the carabiner, which meets the needs of firefighters to quickly find a suitable fixed object for rappelling. Attached Figure Description

[0012] Figure 1 This is a three-dimensional illustration of the present utility model. Figure 1 ;

[0013] Figure 2 This is a three-dimensional illustration of the present utility model. Figure 2 ;

[0014] Figure 3 This is a three-dimensional cross-sectional view of the present invention;

[0015] Figure 4 This is a three-dimensional schematic diagram of the movable tube of this utility model;

[0016] Figure 5 This is a three-dimensional cross-sectional view of the movable tube of this utility model. Figure 1 ;

[0017] Figure 6 This is a three-dimensional cross-sectional view of the movable tube of this utility model. Figure 2 ;

[0018] Figure 7 This is a three-dimensional schematic diagram of the axe handle of this utility model;

[0019] Figure 8 This is a three-dimensional cross-sectional view of the nutless design of this utility model. Figure 1 ;

[0020] Figure 9 This is a three-dimensional cross-sectional view of the nutless design of this utility model. Figure 2 ;

[0021] Figure 10 This is a partial cross-sectional perspective view of the nutless design of this utility model;

[0022] Figure 11 This is a partial three-dimensional schematic diagram of the present invention;

[0023] Figure 12 This is a partial three-dimensional schematic diagram of the nutless design of this utility model. Figure 1 ;

[0024] Figure 13 This is a partial three-dimensional schematic diagram of the nutless design of this utility model. Figure 2 ;

[0025] Figure 14 This is a partial three-dimensional schematic diagram of the nutless design of this utility model. Figure 3 ;

[0026] Figure 15 This is a three-dimensional schematic diagram of the nut of this utility model. Figure 1 ;

[0027] Figure 16 This is a three-dimensional schematic diagram of the nut of this utility model. Figure 2 ;

[0028] Figure 17 This is a three-dimensional cross-sectional view of the nut of this utility model;

[0029] Figure 18 This is a three-dimensional schematic diagram of the second fastening structure of this utility model. Figure 1 ;

[0030] Figure 19 This is a three-dimensional schematic diagram of the second fastening structure of this utility model. Figure 2

[0031] Figure 20 This is a three-dimensional schematic diagram of the second fastening structure of this utility model. Figure 3

[0032] Figure 21 This is a cross-sectional perspective view of the second fastening structure of this utility model;

[0033] The meanings of the markings in the attached diagram are as follows:

[0034] Axe handle 1, through hole 11, deformation groove 12, first thread 13, axe body 2, connecting hole 21, second serrated blade 22, axe head 23, pickaxe head 24, folding mechanism 3, moving tube 31, first serrated blade 32, rotating pin 33, nut 4, second thread 41, extrusion body 42, base 5, limiting block 51, limiting groove 6, fastening mechanism 7, rotating seat 71, pressure handle 72, pin 73, insertion hole 74, positioning hole 75. Detailed Implementation

[0035] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0036] Example 1:

[0037] See Figures 1 to 17 A fire axe includes an axe handle 1 and an axe body 2 located at one end of the axe handle 1. The axe handle 1 is a hollow structure, and a folding mechanism 3 is fitted inside the axe handle 1. The folding mechanism 3 includes a movable tube 31 fitted inside the axe handle 1 and a first serrated blade 32 rotatably folded and embedded in the movable tube 31. The first serrated blade 32 is rotatably located at the end of the movable tube 31 through a hollow rotating pin 33. The axe body 2 has several hole-like connecting holes 21, and a second serrated blade 22 is rotatably located on the axe body 2. The end of the axe handle 1 is provided with a fastening mechanism 7 for fastening the axe handle 1 and the movable tube 31. The fastening mechanism 7 includes several deformation grooves 12 surrounding the side wall of the axe handle 1 at the other end opposite to the axe body 2, a first thread 13 opened at the deformation groove 12 on the side wall of the axe handle 1, and a nut 4 threadedly connected to the first thread 13. The nut 4 has a second thread 41 adapted to the first thread 13 and a pressing body 42 for compressing the deformation grooves 12.

[0038] See Figures 1 to 17The axe body 2 includes an axe head 23 and a pickaxe head 24 positioned opposite each other on the axe head 23. Several through holes 11 are provided on the axe handle 1. Simultaneously, the first serrated blade 32 and the second serrated blade 22, when fully extended, are on the same side of the axe handle 1 and uniformly at a 90-degree angle to it. The first serrated blade 32, the second serrated blade 22, and the axe handle 1 are on the same plane. To improve the extrusion efficiency of the deformation groove 12, the extrusion body 42 is a hollow frustum-shaped structure fixed inside the nut 4. The end of the axe handle 1 has a conical surface structure. When the moving tube 31 is pulled out of the axe handle 1, rotating the nut 4 causes the extrusion body 42 to extrude the end of the axe handle 1, thereby achieving positioning and fixation between the axe handle 1 and the moving tube 31.

[0039] To ensure that the first serrated blade 32 and the second serrated blade 22 are fully extended and form a 90-degree angle with the axe handle 1, a U-shaped base 5 is provided at the end of the moving tube 31. The end of the first serrated blade 32 is rotatably mounted on the base 5 via a rotating pin 33. A limiting block 51 is provided at the end of the first serrated blade 32 to abut against and limit its movement with the base 5. A reset torsion spring is engaged between the first serrated blade 32 and the base 5 to reset the first serrated blade 32. The torsion spring enables the first serrated blade 32 to automatically reset. At the same time, it also enables the first serrated blade 32 to have a stronger embedding ability into the wall during the pulling process when the firefighter uses the first serrated blade 32 to engage with the wall. A limiting groove 6 is provided on the root side wall of the second serrated blade 22 to engage with and limit its movement with the axe body 2. When firefighters need to rappel, the first serrated blade 32 and the second serrated blade 22 are fully extended. The first serrated blade 32, the axe handle 1, the moving tube 31, and the second serrated blade 22 form a U-shaped clamp. This clamp engages with the wall (including but not limited to window edges and pillars). The firefighter attaches a first carabiner to a connecting hole 21, and a second carabiner is connected to one end of the fire rope. The second carabiner is then attached to the rotating pin 33, and the fire rope is secured inside the first carabiner. This allows the moving tube 31 to slide into the axe handle 1 under the firefighter's weight as the fire rope pulls the firefighter during rappelling. Even if the nut 4 loses its securing function, the two serrated blades used to clamp the wall tighten their grip, ensuring the firefighter's safety during rappelling. Furthermore, to meet various needs, the connecting hole 21 can be circular, elliptical, or hexagonal. Additionally, anti-slip stripes 7, which are diamond-shaped, are provided on the outer wall of the nut 4.

[0040] Working principle: This utility model, by setting a first serrated blade 32 and a second serrated blade 22, can clamp and engage with walls (including but not limited to window opening edges and columns), making it easy for firefighters to quickly find fixed objects to perform rope descents outside the building. By setting a hollow rotating pin 33 and a connecting hole 21, firefighters can connect carabiners and fire ropes, ensuring the clamping force of the first serrated blade 32 and the second serrated blade 22 on the wall, thereby further ensuring the safety of firefighters during rope descent.

[0041] Example 2:

[0042] Compared to Embodiment 1, Embodiment 2 differs only in the fastening structure, which is described in [reference needed]. Figures 18 to 21 The fastening mechanism 7 includes a rotating seat 71 fixed on the outer wall of the axe handle 1, a pressure handle 72 rotatably mounted on the rotating seat 71, a pin 73 rotatably mounted on the inner side of the pressure handle 72, a through hole 74 opened on the side wall of the axe handle 1, and several positioning holes 75 opened on the side wall of the moving tube 31 and adapted to the pin 73 and the through hole 74. The pressure handle 72 and the second serrated blade 22 are on the same side. The pressure handle 72 has a semi-circular structure, and the pin 73 has a cylindrical structure. The diameters of the through hole 74 and the positioning holes 75 are larger than the diameter of the pin 73. However, when the user does not need to fasten the axe handle 1 and the moving tube 31, the pin 73 can be pulled out from the through hole 74 and stored in the inner side of the pressure handle 72, which also has a circular structure, for convenient subsequent use.

[0043] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A fire axe, comprising an axe handle and an axe body disposed at one end of the axe handle, characterized in that: The axe handle is hollow, and a folding mechanism is fitted inside the axe handle. The folding mechanism includes a movable tube fitted inside the axe handle, a first serrated blade that is rotatably folded and embedded in the movable tube, the first serrated blade being rotatably mounted at the end of the movable tube via a hollow rotating pin, a plurality of hole-like connecting holes being opened on the axe body, and a second serrated blade being rotatably mounted on the axe body. The end of the axe handle is provided with a fastening mechanism for fastening the axe handle and the movable tube. The fastening mechanism includes a plurality of deformation grooves surrounding the side wall of the axe handle opposite to the axe body, a first thread opening at the deformation groove on the side wall of the axe handle, and a nut threadedly connected to the first thread. The nut is provided with a second thread adapted to the first thread and an extrusion body for extruding the deformation grooves.

2. A fire axe according to claim 1, characterized in that: The fastening mechanism includes a rotating seat fixed on the outer wall of the axe handle, a pressure handle rotatably mounted on the rotating seat, a pin rotatably mounted on the inner side of the pressure handle, a through hole opened on the side wall of the axe handle, and several positioning holes opened on the side wall of the movable tube and adapted to the pin and the through hole; the pressure handle and the second serrated blade are on the same side.

3. A fire axe according to claim 1 or 2, characterized in that: The axe body includes an axe head and a pickaxe head disposed opposite each other at the opposite ends of the axe head, and the axe handle has several through holes.

4. A fire axe according to claim 1 or 2, characterized in that: When the first serrated blade and the second serrated blade are fully extended, they are on the same side of the axe handle and are uniformly at a 90-degree angle to the axe handle. The first serrated blade, the second serrated blade, and the axe handle are on the same plane.

5. A fire axe according to claim 1, characterized in that: The extrusion body is a hollow frustum-shaped structure fixed inside the nut.

6. A fire axe according to claim 1, 2, or 5, characterized in that: The moving tube has a U-shaped base at its end. The end of the first serrated blade is rotatably mounted on the base via the rotating pin. The end of the first serrated blade is provided with a limiting block that abuts against and limits the base. A reset torsion spring is engaged between the first serrated blade and the base to reset the first serrated blade.

7. A fire axe according to claim 6, characterized in that: The root sidewall of the second serrated blade is provided with a limiting groove that engages and limits with the axe body.

8. A fire axe according to claim 7, characterized in that: The end of the axe handle has a conical surface structure.

9. A fire axe according to claim 1, 2, 5, 7, or 8, characterized in that: The shape of the connecting hole includes circular, elliptical, and regular hexagonal.

10. A fire axe according to claim 1, characterized in that: The outer wall of the nut is provided with anti-slip stripes, which include, but are not limited to, diamond stripes.

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