Combined multifunctional piercing fire extinguishing water gun
By designing a combined multi-functional piercing fire hose, integrating atomization, direct spraying, piercing, and demolition functions, it solves the problem that traditional fire hoses cannot penetrate enclosed structures, achieving efficient fire extinguishing and diversified disposal in enclosed spaces, and improving rescue efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 杨乐威
- Filing Date
- 2026-04-20
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional fire hoses have limited functionality, cannot penetrate enclosed structures, cannot handle fires in enclosed spaces, require multiple pieces of equipment, are cumbersome to operate, have low rescue efficiency, and cannot meet the diverse needs of handling complex fire scenarios.
A combined multi-functional piercing fire extinguishing nozzle was designed, integrating atomization, direct spraying, piercing, and demolition functions. Through the cooperation of threaded joints and button positioning pins, it can achieve multi-mode switching, has the ability to penetrate closed structures and extinguish internal fires, and achieves 360° spraying through electric telescopic rods and spray plates.
It enables efficient fire extinguishing in enclosed spaces, improving rescue efficiency and safety. It can simultaneously perform cooling, smoke reduction, prevention of reignition, and demolition operations, meeting the diverse needs of fire scenarios.
Smart Images
Figure CN122097902A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fire-fighting equipment technology, specifically to a combined multi-functional piercing fire-fighting water gun. Background Technology
[0002] Traditional fire hoses are limited to single-function direct spray extinguishing, unable to penetrate enclosed structures such as corrugated steel panels, wooden boards, security doors, truck bodies, containers, and lithium battery compartments, making them ineffective at handling smoldering or hidden fires within enclosed spaces. Furthermore, they lack extended functions such as smoke suppression and breaching assistance, requiring the use of multiple equipment during rescue operations, resulting in cumbersome operation, low rescue efficiency, and an inability to meet the diverse needs of complex fire scenarios. To address these issues, we propose a combined, multi-functional penetrating fire hose. Summary of the Invention
[0003] To address the aforementioned issues, this application provides a combined multi-functional piercing fire extinguishing nozzle, comprising a nozzle body and a threaded connector 2. A first bonding plate is fixedly connected to the front side of the outer surface of the nozzle body. A Velcro strap is provided in the middle of the front side of the outer surface of the first bonding plate. A threaded groove is provided on the right side of the inner cavity of the nozzle body. An atomizing mechanism is engaged within the inner cavity of the threaded groove. A piercing mechanism is provided on the right side of the atomizing mechanism. A hydraulic demolition pliers is fixedly connected to the right end of the threaded connector 2. A connecting pipe is provided on the left side of the upper side of the outer surface of the hydraulic demolition pliers. A button positioning pin is fixedly connected to the front side of the outer surface of the threaded connector 2.
[0004] In some embodiments, the atomizing mechanism includes a tube body, a threaded connector fixedly connected to the left end of the tube body, a bonding plate fixedly connected to the front side of the outer surface of the tube body, a handle fixedly connected to the right side of the front end of the outer surface of the bonding plate, a ball valve fixedly connected to the right end of the tube body, a limit sleeve fixedly connected to the middle of the front side of the ball valve, a threaded sleeve fixedly connected to the right end of the ball valve, a connecting pipe fixedly connected to the rear side of the outer surface of the tube body, and an atomizing assembly fixedly connected to the rear end of the connecting pipe and the rear side of the outer surface of the handle.
[0005] In some embodiments, the outer surface of the threaded connector one engages with the inner cavity of the threaded groove, and the positions of the first bonding plate and the second bonding plate are at the same level.
[0006] In some embodiments, the atomizing assembly includes a U-shaped frame, an auxiliary plate is fixedly connected to the upper right side of the outer surface of the U-shaped frame, a bolt fixing clip is provided on the upper side of the outer surface of the U-shaped frame and the outer surface of the auxiliary plate, an atomizer is fixedly connected to the upper end of the outer surface of the bolt fixing clip, a connecting pipe is fixedly connected to the rear side of the outer surface of the atomizer, and a valve is fixedly connected to the other end of the connecting pipe.
[0007] In some embodiments, the lower front end of the U-shaped frame is fixedly connected to the right rear side of the outer surface of the pipe body, the lower end of the valve is fixedly connected to the connecting pipe, the output end of the button positioning pin is slidably connected to the inner cavity of the limiting sleeve, and the outer surface of the threaded joint is engaged with the inner cavity of the threaded sleeve.
[0008] In some embodiments, the puncture mechanism includes a tube body two, a threaded sleeve three fixedly connected to the left end of the tube body two, a direct spray head fixedly connected to the right end of the tube body two, a threaded sleeve four provided on the left side of the outer surface of the direct spray head, a tube body three connected to the outer surface of the threaded sleeve four, an installation groove one opened on the right side of the outer surface of the tube body three, a sensor provided in the inner cavity of the installation groove one, a puncture head fixedly connected to the right end of the tube body three, an installation groove four opened on the outer surface of the puncture head, a spray assembly provided in the inner cavity of the installation groove four and the inner cavity of the tube body three, and the outer surface of the threaded sleeve three engaging with the inner cavity of the threaded sleeve.
[0009] In some embodiments, the spray assembly includes a water-passing sleeve, with a second mounting groove in the middle of the right end of the water-passing sleeve. An electric telescopic rod is provided in the inner cavity of the second mounting groove. A top block is fixedly connected to the output end of the electric telescopic rod. Four connecting rods are rotatably connected to the outer surface of the top block in a circular array. Spray plates are rotatably connected to the side of each of the four connecting rods away from the top block. A limit ring is rotatably connected to the left side of the outer surface of the four spray plates. Several spray holes are provided on the side of the outer surface of the four spray plates that are close to each other.
[0010] In some embodiments, the outer surface of the water-passing sleeve is fixedly connected to the right side of the inner cavity of the pipe body, the outer surface of the limiting ring is fixedly connected to the left side of the inner cavity of the mounting groove, and the four spray plates are all fixedly connected to the water-passing sleeve through pipes on the side near the limiting ring, and the outer surfaces of the four spray plates are together fitted into the inner cavity of the mounting groove.
[0011] The present invention has at least the following beneficial effects:
[0012] 1. This invention connects the gun body to the fire hose, and through the cooperation of the ball valve and connecting pipe two, the water is atomized by the atomizing group and then applied to the fire extinguishing area, which can achieve the functions of cooling, smoke reduction, and preventing reignition. It can be fixed to the arm by the handle and the Velcro strap, and can be sprayed with one arm. In addition, opening the ball valve and closing the atomizing group, with the cooperation of the threaded sleeve, threaded sleeve three and pipe two, it switches to the direct spray mode, which can extinguish fires at a long distance with strong power through the direct spray head. It can also switch to the piercing mode with the cooperation of pipe three and the sensor, which can penetrate color steel plate, wooden board, security door, carriage, container, lithium battery compartment through the piercing head. Finally, with the cooperation of the electric telescopic rod, limit ring, connecting rod and top block, the four spray plates are deployed and sprayed with fire extinguishing agent 360° with the cooperation of the spray holes, directly hitting the internal smoldering / smoldering fire.
[0013] 2. In the specific implementation process of this invention, the threaded sleeve head three is detached from the inner cavity of the threaded sleeve and installed in conjunction with the threaded connector two, the button positioning pin and the limiting sleeve. It is switched to the demolition mode and the demolition hydraulic pliers are used to open the hole and pry the gap, so as to realize the multi-purpose use of one gun, improve the rescue efficiency and safety, and solve the problem that the traditional water gun has a single function and cannot deal with fires inside the enclosed space. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0015] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;
[0016] Figure 3 This is a schematic diagram of the atomizing mechanism of the present invention;
[0017] Figure 4 This is a schematic diagram of the atomizing mechanism of the present invention from another perspective;
[0018] Figure 5 This is a schematic diagram of the atomization assembly of the present invention;
[0019] Figure 6 This is a schematic diagram of the puncture mechanism of the present invention;
[0020] Figure 7 This is a schematic diagram of the spray system of the present invention;
[0021] Figure 8 This is a schematic diagram of the spray assembly of the present invention from another perspective.
[0022] In the diagram: 1. Gun body; 2. Adhesive plate one; 3. Velcro strap; 4. Atomizing mechanism; 41. Tube body one; 42. Threaded connector one; 43. Adhesive plate two; 44. Handle; 45. Ball valve; 46. Limiting sleeve; 47. Threaded sleeve; 48. Atomizing assembly; 481. U-shaped frame; 482. Valve; 483. Connecting pipe one; 484. Bolt fixing clamp; 485. Atomizer; 486. Auxiliary plate; 49. Connecting pipe two; 5. Puncture mechanism; 51. Tube body two 52. Threaded sleeve three; 53. Threaded sleeve four; 54. Direct spray head; 55. Sensor; 56. Puncture head; 57. Mounting groove four; 58. Spray assembly; 581. Water supply sleeve; 582. Limiting ring; 583. Spray plate; 584. Connecting rod; 585. Spray hole; 586. Top block; 587. Electric telescopic rod; 59. Pipe body three; 61. Threaded joint two; 62. Button positioning pin; 63. Hydraulic breaking pliers; 64. Connecting pipe fitting; 7. Threaded groove. Detailed Implementation
[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] Example 1:
[0025] Please see Figure 1-8 The present invention provides a technical solution: a combined multi-functional piercing fire extinguishing water gun, including a gun body 1 and a threaded connector 2 61. A bonding plate 1 2 is fixedly connected to the front side of the outer surface of the gun body 1. A magic strap 3 is provided in the middle of the front side of the outer surface of the bonding plate 1 2. A threaded groove 7 is opened on the right side of the inner cavity of the gun body 1. An atomizing mechanism 4 is engaged with the inner cavity of the threaded groove 7. A piercing mechanism 5 is provided on the right side of the atomizing mechanism 4. A demolition hydraulic pliers 63 is fixedly connected to the right end of the threaded connector 2 61. A connecting pipe 64 is provided on the upper left side of the outer surface of the demolition hydraulic pliers 63. A button positioning pin 62 is fixedly connected to the front side of the outer surface of the threaded connector 2 61.
[0026] First, attach a bonding plate 2 and a Velcro strap 3. The arm can be fixed to the bonding plate 2 using the Velcro strap 3. Install the atomizing mechanism 4 through the threaded groove 7, allowing for single-arm operation. Then, connect the gun body 1 to the fire hydrant. By controlling the atomizing mechanism 4, the atomizing mode can be activated for cooling, smoke reduction, and fire suppression. When demolition is required, shut off the atomizing mechanism 4 and stop the water supply to the fire hydrant. Install the demolition hydraulic shears 63 using the threaded connector 2 61 and the button positioning pin 62. On the atomizing mechanism 4, the connecting pipe 64 is installed with the hydraulic pump. By controlling the hydraulic breaking clamp 63, the breaking operation can be performed to open holes and pry open gaps. When the breaking operation is not required, the hydraulic breaking clamp 63 is removed from the atomizing mechanism 4 through the threaded connector 61 and the button positioning pin 62. The piercing mechanism 5 is installed on the atomizing mechanism 4. By adjusting the piercing mechanism 5, it can enter the piercing mode and the direct spray mode. When switching to the piercing mode, it can penetrate the enclosed space and extinguish the fire inside. When switching to the direct spray mode, it can extinguish the fire powerfully from a distance.
[0027] The atomizing mechanism 4 includes a tube body 41, a threaded connector 42 fixedly connected to the left end of the tube body 41, a second bonding plate 43 fixedly connected to the front side of the outer surface of the tube body 41, a handle 44 fixedly connected to the right side of the front end of the outer surface of the second bonding plate 43, a ball valve 45 fixedly connected to the right end of the tube body 41, a limit sleeve 46 fixedly connected to the middle of the front side of the outer surface of the ball valve 45, a threaded sleeve 47 fixedly connected to the right end of the ball valve 45, a second connecting pipe 49 fixedly connected to the rear side of the outer surface of the tube body 41, an atomizing assembly 48 fixedly connected to the rear end of the second connecting pipe 49 and the rear side of the outer surface of the handle 44, the outer surface of the threaded connector 42 meshing with the inner cavity of the threaded groove 7, and the positions of the first bonding plate 2 and the second bonding plate 43 are at the same level.
[0028] The atomizing assembly 48 includes a U-shaped frame 481. An auxiliary plate 486 is fixedly connected to the upper right side of the outer surface of the U-shaped frame 481. A bolt clamp 484 is provided on the upper side of the outer surface of the U-shaped frame 481 and the outer surface of the auxiliary plate 486. An atomizer 485 is fixedly connected to the upper part of the outer surface of the bolt clamp 484. A connecting pipe 483 is fixedly connected to the rear side of the outer surface of the atomizer 485. A valve 482 is fixedly connected to the other end of the connecting pipe 483. The lower front end of the U-shaped frame 481 is fixedly connected to the rear right side of the outer surface of the pipe 41. The lower end of the valve 482 is connected to the connecting pipe 483. The pipe 49 is fixedly connected to the second pipe. The output end of the button positioning pin 62 is slidably connected to the inner cavity of the limit sleeve 46. The outer surface of the threaded joint 61 is engaged with the inner cavity of the threaded sleeve 47. The limit sleeve 46 is added to limit the installation of the button positioning pin 62. The threaded sleeve 47 is added to install the threaded joint 61 or the piercing mechanism 5. The U-shaped frame 481 is added to install the bolt fixing clamp 484. An auxiliary plate 486 is added to the U-shaped frame 481 to prevent the bolt fixing clamp 484 from rotating on the U-shaped frame 481.
[0029] It should be noted that the specific installation method, circuit connection method, and control method of the atomizing assembly 48 are all conventional designs, which are standard design practices for designers. Activating the atomizing assembly 48 atomizes water. First, the threaded connector 42 is engaged with the threaded groove 7 to install the tube 41 onto the gun body 1. The second fitting plate 43 is aligned with the first fitting plate 2. When the arm is secured to the first fitting plate 2 using the Velcro strap 3, the hand can grip the handle 44, allowing a single arm to lift the atomizing mechanism 4 and the gun body 1. The nozzle body 1 is connected to the fire hydrant. After water is supplied, the water enters pipe 41 through the nozzle body 1, then enters ball valve 45 through pipe 41, and can be sprayed out from threaded sleeve 47. When ball valve 45 is closed and valve 482 is opened, the water will pass through connecting pipe 49, valve 482 and connecting pipe 483 in sequence and finally enter atomizer 485. Atomizer 485 atomizes the water to cool it down, reduce smoke, and prevent reignition. When atomization is not needed, valve 482 is closed, and the water cannot enter atomizer 485.
[0030] The puncture mechanism 5 includes a tube body 2 51. A threaded sleeve 3 52 is fixedly connected to the left end of the tube body 2 51, and a direct spray head 54 is fixedly connected to the right end of the tube body 2 51. A threaded sleeve 4 53 is provided on the left side of the outer surface of the direct spray head 54. A tube body 3 59 is connected to the outer surface of the threaded sleeve 4 53. An installation groove 1 is opened on the right side of the outer surface of the tube body 3 59. A sensor 55 is provided in the inner cavity of the installation groove 1. A puncture head 56 is fixedly connected to the right end of the tube body 3 59. An installation groove 4 57 is opened on the outer surface of the puncture head 56. A spray assembly 58 is provided in the inner cavity of the installation groove 4 57 and the inner cavity of the tube body 3 59. The outer surface of the threaded sleeve 3 52 is engaged with the inner cavity of the threaded sleeve 47.
[0031] It should be noted that the specific installation method, circuit connection method, and control method of sensor 55 are all conventional designs, which are standard design practices for designers. Sensor 55 can sense the ambient temperature and control the operation of sprinkler group 58. Specifically, firstly, threaded sleeve 3 52 is engaged with threaded sleeve 47 to connect pipe body 2 51 and pipe body 1 41, entering direct spray mode. Then, after water supply, ball valve 45 is opened, and water enters pipe body 2 51 through gun body 1, pipe body 1 41, and ball valve 45, and then enters direct spray head 54. Direct spray head 54 can extinguish fires powerfully from a distance. When water supply is stopped, threaded sleeve 4 53 is engaged with pipe body 3 59 to enter piercing mode. Through piercing head 56, it can penetrate enclosed spaces. After water supply, it can work with sprinkler group 58 to extinguish internal fires, especially in container / truck compartment fires, lithium battery pack fires, energy storage cabinet fires, indoor smoldering fires, and ceiling-mounted fires. If smoldering fire occurs behind a security door or in a closed room, it is necessary to puncture the fire before extinguishing it.
[0032] The spray assembly 58 includes a water-passing sleeve 581. A second mounting groove is located in the middle of the right end of the water-passing sleeve 581. An electric telescopic rod 587 is located inside the second mounting groove. A top block 586 is fixedly connected to the output end of the electric telescopic rod 587. Four connecting rods 584 are rotatably connected in a ring array on the outer surface of the top block 586. Spray plates 583 are rotatably connected to the side of each of the four connecting rods 584 away from the top block 586. A limit ring 582 is rotatably connected to the left side of the outer surface of the four spray plates 583. Several spray holes 585 are located on the side of the outer surface of the four spray plates 583 that are close to each other. The outer surface of the water-passing sleeve 581 is fixedly connected to the right side of the inner cavity of the pipe body 59. The outer surface of the limit ring 582 is fixedly connected to the left side of the inner cavity of the fourth mounting groove 57. The side of each of the four spray plates 583 closest to the limit ring 582 is fixedly connected to the water-passing sleeve 581 via a pipe. The outer surfaces of the four spray plates 583 are fitted into the inner cavity of the fourth mounting groove 57.
[0033] It should be noted that the specific installation method, circuit connection method, and control method of the electric telescopic rod 587 are all conventional designs and are standard design practices for designers. When the sensor 55 senses the ambient temperature, the sensor 55 can control the electric telescopic rod 587 to move the top block 586 to the left inside the mounting slot 4 57. While the top block 586 is moving, it will drive the four connecting rods 584 to rotate, and at the same time, it will drive the four spray plates 583 to rotate around the limiting ring 582, so that the four spray plates 583 are opened and separated from the mounting slot 4 57. After water supply, the water enters the pipe body 3 59 through the direct nozzle 54, then enters the inner cavity of the water sleeve 581, and then enters the four spray plates 583 through the four pipes. Finally, the extinguishing agent is sprayed outward in a 360° manner through several spray holes 585 on the spray plates 583, directly hitting the smoldering / smoldering fire inside.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A combined multi-functional piercing fire extinguishing nozzle, comprising a nozzle body (1) and a threaded connector (61), characterized in that: The gun body (1) has a bonding plate (2) fixedly connected to the front side of its outer surface. The bonding plate (2) has a magic strap (3) in the middle of the front side of its outer surface. The gun body (1) has a threaded groove (7) on the right side of its inner cavity. The threaded groove (7) has an atomizing mechanism (4) meshing with the inner cavity of its inner cavity. The atomizing mechanism (4) has a piercing mechanism (5) on the right side. The threaded connector (61) has a hydraulic pliers (63) fixedly connected to the right end. The hydraulic pliers (63) has a connecting pipe (64) on the upper left side of its outer surface. The threaded connector (61) has a button positioning pin (62) fixedly connected to the front side of its outer surface.
2. The combined multi-functional piercing fire extinguishing nozzle according to claim 1, characterized in that: The atomizing mechanism (4) includes a tube body (41), a threaded connector (42) is fixedly connected to the left end of the tube body (41), a bonding plate (43) is fixedly connected to the front side of the outer surface of the tube body (41), a handle (44) is fixedly connected to the right side of the front end of the outer surface of the bonding plate (43), a ball valve (45) is fixedly connected to the right end of the tube body (41), a limit sleeve (46) is fixedly connected to the middle of the front side of the outer surface of the ball valve (45), a threaded sleeve (47) is fixedly connected to the right end of the ball valve (45), a connecting pipe (49) is fixedly connected to the rear side of the outer surface of the tube body (41), and an atomizing assembly (48) is fixedly connected to the rear end of the connecting pipe (49) and the rear side of the outer surface of the handle (44).
3. The combined multi-functional piercing fire extinguishing nozzle according to claim 2, characterized in that: The outer surface of the threaded connector (42) engages with the inner cavity of the threaded groove (7), and the first bonding plate (2) and the second bonding plate (43) are at the same level.
4. The combined multi-functional piercing fire extinguishing nozzle according to claim 2, characterized in that: The atomizing assembly (48) includes a U-shaped frame (481). An auxiliary plate (486) is fixedly connected to the upper right side of the outer surface of the U-shaped frame (481). A bolt fixing clip (484) is provided on the upper side of the outer surface of the U-shaped frame (481) and the outer surface of the auxiliary plate (486). An atomizer (485) is fixedly connected to the upper end of the outer surface of the bolt fixing clip (484). A connecting pipe (483) is fixedly connected to the rear side of the outer surface of the atomizer (485). A valve (482) is fixedly connected to the other end of the connecting pipe (483).
5. The combined multi-functional piercing fire extinguishing nozzle according to claim 4, characterized in that: The lower front end of the U-shaped frame (481) is fixedly connected to the right rear side of the outer surface of the first pipe body (41), the lower end of the valve (482) is fixedly connected to the second connecting pipe (49), the output end of the button positioning pin (62) is slidably connected to the inner cavity of the limit sleeve (46), and the outer surface of the second threaded joint (61) is engaged with the inner cavity of the threaded sleeve (47).
6. The combined multi-functional piercing fire extinguishing nozzle according to claim 2, characterized in that: The puncture mechanism (5) includes a tube body two (51), a threaded sleeve three (52) is fixedly connected to the left end of the tube body two (51), a direct spray head (54) is fixedly connected to the right end of the tube body two (51), a threaded sleeve four (53) is provided on the left side of the outer surface of the direct spray head (54), a tube body three (59) is engaged with the outer surface of the threaded sleeve four (53), an installation groove one is provided on the right side of the outer surface of the tube body three (59), a sensor (55) is provided in the inner cavity of the installation groove one, a puncture head (56) is fixedly connected to the right end of the tube body three (59), an installation groove four (57) is provided on the outer surface of the puncture head (56), a spray group (58) is provided in the inner cavity of the installation groove four (57) and the inner cavity of the tube body three (59), and the outer surface of the threaded sleeve three (52) is engaged with the inner cavity of the threaded sleeve (47).
7. The combined multi-functional piercing fire extinguishing nozzle according to claim 6, characterized in that: The spray assembly (58) includes a water-passing sleeve (581). A second mounting groove is provided in the middle of the right end of the water-passing sleeve (581). An electric telescopic rod (587) is provided in the inner cavity of the second mounting groove. A top block (586) is fixedly connected to the output end of the electric telescopic rod (587). Four connecting rods (584) are rotatably connected to the outer surface of the top block (586) in a ring array. Spray plates (583) are rotatably connected to the side of the four connecting rods (584) away from the top block (586). A limit ring (582) is rotatably connected to the left side of the outer surface of the four spray plates (583). Several spray holes (585) are provided on the side of the outer surface of the four spray plates (583) that are close to each other.
8. The combined multi-functional piercing fire extinguishing nozzle according to claim 7, characterized in that: The outer surface of the water-passing sleeve (581) is fixedly connected to the right side of the inner cavity of the pipe body three (59), the outer surface of the limiting ring (582) is fixedly connected to the left side of the inner cavity of the installation groove four (57), and the four spray plates (583) are all fixedly connected to the water-passing sleeve (581) through pipes on the side near the limiting ring (582). The outer surfaces of the four spray plates (583) are all fitted into the inner cavity of the installation groove four (57).