A dual-purpose bracket for a fire service air breathing apparatus

Abstract

A kind of two-purpose fire-fighting air breathing apparatus bracket of clamp type belongs to the technical field of fire-fighting breathing apparatus equipment.It includes a back plate and a supporting plate, a pair of clamping devices are symmetrically arranged on the left and right sides of the back plate above the supporting plate, the clamping device includes a clamping block, a rotating part fixed with the clamping block, a positioning part fixed with the back plate and hinged with the rotating part, a torsion spring arranged between the rotating part and the positioning part and pushing the clamping block of the rotating part to clamp, when the rotating part rotates to the state perpendicular to the back plate with the clamping block, it is locked with the positioning part, when the rotating part rotates to the state beyond the perpendicular state with the back plate with the clamping block opening outward, it is unlocked with the positioning part, and the rotating part can always keep the tendency of rotating inward under the action of the torsion spring.The advantages are: the efficiency of rescue personnel wearing air breathing apparatus to quickly separate from the clamping structure is improved, and the influence of the clamping structure on the comfort of the passenger seat in the state without gas cylinder is eliminated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of breathing apparatus for fire fighting, and particularly relates to a double-purpose bracket for air breathing apparatus for fire fighting. BACKGROUND

[0002] In the fire fighting equipment, the air breathing apparatus is one of the indispensable personal protection equipment for the firemen in the thick smoke or toxic gas site rescue, in order to ensure the fire rescue personnel to save the physical strength and can quickly wear the air breathing apparatus in the execution of the task, usually set in the passenger compartment of the fire truck fixed bracket, used to place the air breathing apparatus, so that the rescue personnel can wear the air breathing apparatus while supported by the bracket to eliminate the weight of the air breathing apparatus. The current breathing machine fixed bracket mainly has pipe type, plate type, pillow type and the like, among which the plate type bracket structure is the most widely used one, which is usually composed of a metal plate bending part, a rotating assembly and a pressing assembly. When the air cylinder of the air breathing apparatus is clamped, the bottle head of the air cylinder is placed in the bracket, the rotating assembly is operated to make the pressing assembly press down from the upper part to clamp and fix the air cylinder, so as to achieve the purpose of placing and clamping the air cylinder. When the rotating assembly is operated in reverse, the pressing assembly is separated from the air cylinder, and then the air cylinder can be taken out. The above-mentioned plate type fixed structure has many disadvantages in actual use, such as many parts, complicated manufacturing process, large space occupation, and uncomfortable seat back, especially when the rescue personnel do not use the air breathing apparatus during the execution of the task, the bracket structure on the seat back becomes a burden.

[0003] In view of the above problems, it is necessary to design a double-purpose bracket for air breathing apparatus for fire fighting, which is simple in structure, low in cost, can be opened before the air cylinder is placed to facilitate the placement of the air cylinder, can be automatically tightened when the air cylinder is clamped, and can be automatically folded into a backrest when the air cylinder is separated. Therefore, the applicant ingeniously designs the technical scheme. SUMMARY

[0004] The purpose of the present application is to provide a double-purpose bracket for air breathing apparatus for fire fighting, which helps to improve the clamping structure so that the air cylinder can be automatically folded during the placement and separation to complete the clamping of the air cylinder or the formation of the backrest, which is beneficial to the rescue personnel to wear the air breathing apparatus and quickly separate from the clamping structure, and effectively eliminates the influence of the clamping structure on the comfort of the passenger seat in the absence of the air cylinder.

[0005] The utility model aims at achieving, a pair of dual-purpose fire-fighting air breathing apparatus bracket, including a backplate and a tray plate which is reversely arranged on the backplate, a pair of clamping devices are symmetrically arranged on the backplate at the positions of the left and right sides above the tray plate, the clamping device includes a clamping block, a rotating part which is fixed with the clamping block, a positioning part which is fixed with the backplate and is hinged with the rotating part, a torsion spring which is arranged between the rotating part and the positioning part and pushes the clamping block of the rotating part to clamp, when the rotating part rotates to the state of being perpendicular to the backplate, the rotating part is locked with the positioning part, when the rotating part rotates to the state of being more than perpendicular to the backplate, the rotating part is unlocked with the positioning part, and the rotating part can always keep the tendency of rotating inward under the action of the torsion spring.

[0006] In a specific embodiment of the utility model, the rotating part is fixed with the clamping block through fasteners, the upper end of the rotating part is reversely arranged with a rotating part upper hinge plate I, and the lower end is reversely arranged with a rotating part lower hinge plate I; the positioning part is fixed with the backplate through fasteners, the upper end of the positioning part is reversely arranged with a positioning part upper hinge plate II, and the lower end is reversely arranged with a positioning part lower hinge plate II; a hinge shaft is arranged between the rotating part and the positioning part, the hinge shaft passes through the rotating part upper hinge plate I, the positioning part upper hinge plate II, the torsion spring, the positioning part lower hinge plate II and the rotating part lower hinge plate I in sequence from top to bottom, thereby realizing the hinge of the rotating part and the positioning part, and the torsion spring feet at both ends of the torsion spring abut against the rotating part and the positioning part and provide the rotating part with the torsion of always rotating inward.

[0007] In another specific embodiment of the utility model, a locking part accommodation slot is formed on the rotating direction of the rotating part lower hinge plate I around the hinge shaft axis, a locking part accommodation slot opening is formed on the locking part accommodation slot, and a locking angle is formed on one side of the locking part accommodation slot opening, a collision angle is formed on the rotating direction of the rotating part lower hinge plate I around the hinge shaft axis and opposite to the locking part accommodation slot opening; a locking part is rotatably installed on the positioning part lower hinge plate II through a pin shaft, the two ends of the locking part in the length direction respectively form a locking slot, and a locking part foot is respectively opened on the two sides of the locking slot.

[0008] In still another specific embodiment of the utility model, when the rotating part rotates around the positioning part, the locking part slides in the locking part accommodation slot, when the clamping block is rotated to the position of being perpendicular to the backplate, the collision angle collides with the locking part foot at one end of the locking part, the locking part is deflected, and the locking slot at the other end is opposite to the locking angle, when the clamping block is released and the rotating part rotates inward to reset under the torsion of the torsion spring, the locking angle slides into the locking slot along the locking part foot on one side of the opposite locking slot to form a stable support structure, thereby realizing the locking between the rotating part and the positioning part.

[0009] In still another specific embodiment of the present application, when the clamping block rotates to a position beyond the vertical backboard, the impact angle hits the locking piece foot at one end of the locking piece, causing the locking piece to further deflect and allowing the locking slot at the other end to move out of the rotation path of the locking angle, thereby achieving unlocking between the rotating piece and the positioning piece. At this time, the rotating piece of the clamping block rotates inward and resets under the torsional force of the torsional spring, and the locking piece slides into the locking piece accommodation slot opening after avoiding the locking angle, and slides along the locking piece accommodation slot until the clamping block is folded with the backboard or the clamping block clamps the gas cylinder.

[0010] In still another specific embodiment of the present application, a head support is provided between the pair of clamping devices and at a position above.

[0011] In still another specific embodiment of the present application, one side of the clamping block is provided with a rotating piece fixing cavity, the rotating piece is arranged in the rotating piece fixing cavity and is fixed to the bottom cavity wall of the rotating piece fixing cavity through a fastener, and a plurality of clamping claws are formed on the other side edge of the clamping block.

[0012] In still another specific embodiment of the present application, the support plate is provided with a gas cylinder placing cavity, the backboard is fixed with a support plate hinge seat at the mounting position of the support plate, and the side of the support plate away from the gas cylinder placing cavity is hinged to the support plate hinge seat. The support plate can be flipped up and down around the support plate hinge seat and can assume two states of being close to the backboard or being perpendicular to the backboard.

[0013] In still another specific embodiment of the present application, the head support is made of one of plastic, rubber, and plastic.

[0014] In still another specific embodiment of the present application, the clamping claws are integrally formed with the clamping block and are made of one of plastic, rubber, and plastic.

[0015] The present application has the beneficial effects of: due to the clamping device adopting the structure of locking when rotating to the state of being perpendicular to the backboard, and unlocking and rotating inward to clamp when rotating to open beyond the perpendicular state, the gas cylinder can be automatically folded during placement and separation to respectively complete the two actions of clamping the gas cylinder or forming a backrest, effectively improving the efficiency of the rescuer wearing the air respirator quickly separating from the clamping structure, and eliminating the influence of the clamping structure on the comfort of the passenger seat in the state of no gas cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment of the present application;

[0017] Figure 2 is an enlarged view of A of Figure 1 ;

[0018] Figure 3 The use state schematic diagram of an application example of the present application;

[0019] Figure 4 The non-opening state diagram of the rotating member and the fixed member of the present application;

[0020] Figure 5 The locking state diagram of the rotating member and the fixed member of the present application;

[0021] Figure 6 The unlocking state diagram of the rotating member and the fixed member of the present application.

[0022] In the figure: 1. back plate; 2. supporting plate, 21. gas cylinder placing cavity, 22. supporting plate hinged seat; 3. clamping device, 31. clamping block, 311. rotating member fixed cavity, 312. clamping jaw, 32. rotating member, 321. upper hinged plate I of rotating member, 322. lower hinged plate I of rotating member, 3221. locking member accommodation slot, 3222. locking member accommodation slot opening, 3223. locking angle, 3224. impact angle, 33. positioning member, 331. upper hinged plate II of positioning member, 332. lower hinged plate II of positioning member, 333. pin shaft, 334. locking member, 3341. locking slot, 3342. locking member foot, 34. torsion spring, 35. hinged shaft; 4. head support; 5. air respirator; 6. fixed seat. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings, but the description of the embodiments is not a limitation of the technical solutions, and any formal but not substantial changes according to the concept of the present application should be considered as the protection scope of the present application.

[0024] In the following description, any directional or positional concepts such as up, down, left, right, front and back are based on the position shown in the drawings, and therefore should not be understood as a special limitation of the technical solutions provided by the present application. Figure 1

[0025] Please refer to Figure 1 and combine with Figure 2 ​This invention illustrates a clamp-on dual-purpose fire-fighting air breathing apparatus bracket, comprising a back plate 1 and a tray 2 flipped onto the back plate 1. The technical innovation of this invention lies in the fact that a pair of clamping devices 3 are symmetrically arranged on the left and right sides above the tray 2 on the back plate 1. Each clamping device 3 includes a clamping block 31, a rotating member 32 fixed to the clamping block 31, a positioning member 33 fixed to the back plate 1 and hinged to the rotating member 32, and a torsion spring 34 disposed between the rotating member 32 and the positioning member 33, which pushes the clamping block 31 on the rotating member 32 to clamp. When the clamping block 31 rotates to a position perpendicular to the back plate 1, the rotating member 32 locks with the positioning member 33. When the clamping block 31 opens outward and rotates beyond perpendicularity to the back plate 1, the rotating member 32 releases from the positioning member 33. Under the action of the torsion spring 34, the rotating member 32 maintains a tendency to rotate inward.

[0026] Furthermore, the aforementioned rotating component 32 is fixed to the clamping block 31 by screws. The upper end of the rotating component 32 has a folded-over upper hinge plate I 321, and the lower end has a folded-over lower hinge plate I 322. The aforementioned positioning component 33 is fixed to the back plate 1 by screws. The upper end of the positioning component 33 has a folded-over upper hinge plate II 331, and the lower end has a folded-over lower hinge plate II 332. A hinge shaft 35 is provided between the aforementioned rotating component 32 and the positioning component 33, and the hinge shaft 35 extends from top to bottom. The components pass sequentially through the upper hinge plate I 321 of the rotating component, the upper hinge plate II 331 of the positioning component, the torsion spring 34, the lower hinge plate II 332 of the positioning component, and the lower hinge plate I 322 of the rotating component, thereby achieving the hinge connection between the aforementioned rotating component 32 and the positioning component 33. The torsion spring feet at both ends of the aforementioned torsion spring 34 abut against the rotating component 32 and the positioning component 33 respectively, and provide the rotating component 32 with a torque that always rotates inward. The structure of the torsion spring driving the rotation by torque is a conventional technology, which is only briefly shown in the accompanying drawings of this patent and will not be described in detail.

[0027] Furthermore, a locking member clearance groove 3221 is formed on the lower hinge plate I 322 of the aforementioned rotating member in the rotational direction around the hinge shaft 35. The aforementioned locking member clearance groove 3221 has a locking member clearance groove opening 3222, and a locking angle 3223 is formed on one side of the locking member clearance groove opening 3222. A striking angle 3224 is formed on the lower hinge plate I 322 of the aforementioned rotating member in the rotational direction around the hinge shaft 35, at a position opposite to the locking member clearance groove opening 3222. A locking member 334 is rotatably mounted on the lower hinge plate II 332 of the aforementioned positioning member via a pin 333. A locking groove 3341 is formed at each end of the length direction of the aforementioned locking member 3341, and a locking member foot 3342 is opened on each side of the aforementioned locking groove 3341. When the aforementioned rotating member 32 rotates around the positioning member 33, as... Figure 4As shown, the aforementioned locking member 334 slides in the locking member accommodation slot 3221, when the aforementioned clamping block 31 is rotated to a position perpendicular to the back plate 1, the aforementioned impact corner 3224 impacts the locking member foot 3342 at one end of the locking member 334, causing the locking member 334 to deflect, and the locking slot 3341 at the other end is aligned with the locking corner 3223, when the aforementioned clamping block 31 is released, the rotating member 32 is rotated back inward under the torsional force of the torsion spring 34, as shown in Figure 5 As shown, the aforementioned locking corner 3223 slides into the locking slot 3341 along the locking member foot 3342 on one side of the locking slot 3341 to form a stable support structure, thereby achieving the locking between the rotating member 32 and the positioning member 33; when the aforementioned clamping block 31 is rotated to a position beyond the perpendicular back plate 1, as shown in Figure 6 As shown, the aforementioned impact corner 3224 impacts the locking member foot 3342 at one end of the locking member 334, causing the locking member 334 to deflect further, and the locking slot 3341 at the other end is away from the rotating path of the locking corner 3223, specifically, the locking corner 3223 cannot slide into the locking slot 3341 when passing through the locking member 334, but instead pushes the locking member 334 to rotate to a state where the locking slot 3341 at one end is directed towards the opening 3222 of the locking member accommodation slot, thereby achieving the unlocking between the rotating member 32 and the positioning member 33, at this time, the rotating member 32 of the aforementioned clamping block 31 is rotated back inward under the torsional force of the torsion spring 34, and the aforementioned locking member 334 slides into the locking member accommodation slot opening 3222 after avoiding the locking corner 3223, and slides along the locking member accommodation slot 3221 until the clamping block 31 is in contact with the back plate 1 or the clamping block 31 clamps the gas cylinder.

[0028] As shown in Figure 1 , a headrest 4 is provided between the two aforementioned clamping devices 3 at a position above, which is fixed to the back plate 1. The material of the aforementioned headrest 4 is one of plastic, plastic, rubber, and the material of the aforementioned headrest 4 in this embodiment is preferably rubber.

[0029] Further, one side of the aforementioned clamping block 31 is provided with a rotating member fixing cavity 311, the aforementioned rotating member 32 is arranged in the rotating member fixing cavity 311 and is fixed to the bottom cavity wall of the rotating member fixing cavity 311 by screws, and a plurality of clamping claws 312 are arranged on the other side edge of the clamping block 31. The aforementioned clamping claws 312 are integrally formed with the clamping block 31 and are made of one of plastic, plastic, and rubber, and the material of the aforementioned clamping claws 312 and the clamping block 31 in this embodiment is preferably rubber.

[0030] Further, the aforementioned tray 2 is provided with a gas cylinder placing cavity 21, and a tray hinged seat 22 is provided at the mounting position of the aforementioned tray 2 and fixed to the backboard 1, the side of the aforementioned tray 2 away from the gas cylinder placing cavity 21 is hinged to the tray hinged seat 22, and the aforementioned tray 2 is flipped up and down around the tray hinged seat 22 to present a state of abutting against the backboard 1 and a state of being perpendicular to the backboard 1.

[0031] Please refer to Figure 3 and combine with Figure 1 and Figure 2 In actual use, a seat 6 is also fixed at the position where the aforementioned backboard 1 is below the tray 2, and the air respirator bracket is arranged on the backboard 1 along the fixed seat 6, before the fire rescue personnel get on the vehicle, the aforementioned pair of clamping blocks 31 are first opened to the locked state perpendicular to the backboard 1, then the fire rescue personnel sit in the fixed seat 6 to make the air respirator 5 gas outlet pass through the aforementioned gas cylinder placing cavity 21 and rest on the tray 2, and the air respirator 5 is clamped between the pair of clamping blocks 31, the clamping blocks 31 rotate beyond the state perpendicular to the backboard 1 to be unlocked during the process of clamping the air respirator 5 between the pair of aforementioned clamping blocks 31, the aforementioned clamping blocks 31 are inwardly folded under the torsional force of the torsional spring 34 and tightly hold the air respirator 5 from the left and right sides respectively, at this time the fire rescue personnel can ride on the fixed seat 6 with the air respirator 5 on the back and the headrest on the aforementioned headrest 4; when the fire rescue personnel leave with the air respirator 5 on the back, the air respirator 5 pushes away the clamping blocks 31 and rotates again beyond the state perpendicular to the backboard 1, and the aforementioned pair of clamping blocks 31 are inwardly folded and abut against the backboard 1 under the torsional force of the torsional spring 34; when the fire rescue personnel do not need to carry the air respirator 5, the aforementioned pair of clamping devices 3 are relatively folded into Figure 3 the state of the rightmost side of the middle without placing the air respirator 5, so that the clamping blocks 31 form a backrest state, at this time the fire rescue personnel can rest the back against the clamping blocks 31, effectively improving the comfort of the fire rescue personnel riding.

Claims

1. A clamp-type dual-purpose fire-fighting air breathing apparatus bracket, comprising a back plate (1) and a tray (2) flipped onto the back plate (1), characterized in that: A pair of clamping devices (3) are symmetrically arranged on the back plate (1) on the left and right sides above the support plate (2). The clamping device (3) includes a clamping block (31), a rotating part (32) fixed to the clamping block (31), a positioning part (33) fixed to the back plate (1) and hinged to the rotating part (32), and a torsion spring (34) disposed between the rotating part (32) and the positioning part (33) and pushing the clamping block (31) on the rotating part (32) to clamp. When the rotating part (32) is in a state where the clamping block (31) is rotated to be perpendicular to the back plate (1), it locks with the positioning part (33). When the rotating part (32) is in a state where the clamping block (31) is rotated to be perpendicular to the back plate (1), it locks with the positioning part (33). When rotated to a position beyond perpendicular to the back plate (1), it is unlocked from the positioning member (33), while the rotating member (32) maintains an inward rotation tendency under the action of the torsion spring (34); the rotating member (32) is fixed to the clamping block (31) by fasteners, and the upper end of the rotating member (32) is folded into a rotating member upper hinge plate I (321), while the lower end is folded into a rotating member lower hinge plate I (322); the positioning member (33) is fixed to the back plate (1) by fasteners, and the upper end of the positioning member (33) is folded into a positioning member upper hinge plate II (331), while the lower end is folded into a positioning member lower hinge plate II (332); the rotating member (32) and the positioning member (33) A hinge shaft (35) is provided between the rotating part (32) and the positioning part (33). The hinge shaft (35) passes through the upper hinge plate I (321) of the rotating part, the upper hinge plate II (331) of the positioning part, the torsion spring (34), the lower hinge plate II (332) of the positioning part, and the lower hinge plate I (322) of the rotating part from top to bottom, thereby realizing the hinge between the rotating part (32) and the positioning part (33). The torsion spring feet at both ends of the torsion spring (34) abut against the rotating part (32) and the positioning part (33) respectively and provide the rotating part (32) with a torque that always rotates inward. A locking member relief groove (3221) is opened on the lower hinge plate I (322) of the rotating part in the rotation direction around the axis of the hinge shaft (35). A locking member relief groove opening (3222) is formed on the 3221), and a locking angle (3223) is formed on one side of the locking member relief groove opening (3222). A striking angle (3224) is formed on the lower hinge plate I (322) of the rotating member in the rotation direction around the axis of the hinge shaft (35) and at a position opposite to the locking member relief groove opening (3222). A locking member (334) is rotatably mounted on the lower hinge plate II (332) of the positioning member through a pin (333). A locking groove (3341) is formed at both ends of the length direction of the locking member (334), and a locking member foot (3342) is opened on both sides of the locking groove (3341).

2. The clamp-type dual-purpose fire-fighting air breathing apparatus bracket according to claim 1, characterized in that: When the rotating member (32) rotates around the positioning member (33), the locking member (334) slides in the locking member clearance groove (3221). When the clamping block (31) is rotated to a position perpendicular to the back plate (1), the impact angle (3224) strikes the locking member foot (3342) at one end of the locking member (334), causing the locking member (334) to deflect and the locking groove (3341) at the other end to face the locking angle (3223). When the clamping block (31) is released and the rotating member (32) rotates inward to reset under the torque of the torsion spring (34), the locking angle (3223) slides into the locking groove (3341) along the locking member foot (3342) on the side of the corresponding locking groove (3341) to form a stable support structure, thereby realizing the locking between the rotating member (32) and the positioning member (33).

3. A clamp-type dual-purpose fire-fighting air breathing apparatus bracket according to claim 1, characterized in that: When the clamping block (31) rotates to a position beyond the vertical back plate (1), the impact angle (3224) strikes the locking foot (3342) at one end of the locking member (334), causing the locking member (334) to deflect further and the locking groove (3341) at the other end to leave the rotation path of the locking angle (3223), thereby unlocking the rotating member (32) and the positioning member (33). At this time, the rotating member (32) of the clamping block (31) rotates inward and resets under the torque of the torsion spring (34), while the locking member (334) slides into the opening (3222) of the locking member relief groove after avoiding the locking angle (3223) and slides along the locking member relief groove (3221) until the clamping block (31) and the back plate (1) are together or the clamping block (31) clamps the gas cylinder.

4. A clamp-type dual-purpose fire-fighting air breathing apparatus bracket according to claim 1, characterized in that: A headrest (4) fixed to the back plate (1) is provided between and above the pair of clamping devices (3).

5. A clamp-type dual-purpose fire-fighting air breathing apparatus bracket according to claim 1, characterized in that: The clamping block (31) has a rotating component fixing cavity (311) in the middle of one side. The rotating component (32) is disposed in the rotating component fixing cavity (311) and fixed to the bottom cavity wall of the rotating component fixing cavity (311) by fasteners. Multiple claws (312) are formed on the other side edge of the clamping block (31).

6. A clamp-type dual-purpose fire-fighting air breathing apparatus bracket according to claim 1, characterized in that: The pallet (2) has a gas cylinder placement cavity (21). A pallet hinge seat (22) is fixed on the back plate (1) at the installation position of the pallet (2). The side of the pallet (2) away from the gas cylinder placement cavity (21) is hinged to the pallet hinge seat (22). The pallet (2) can rotate up and down around the pallet hinge seat (22) and can be in two states: close to the back plate (1) or perpendicular to the back plate (1).

7. A clamp-type dual-purpose fire-fighting air breathing apparatus bracket according to claim 4, characterized in that: The headrest (4) is made of one of the following materials: plastic, rubber, or plastic.

8. A clamp-type dual-purpose fire-fighting air breathing apparatus bracket according to claim 5, characterized in that: The claw (312) and the clamping block (31) are integrally formed and are made of one of plastic, rubber, or plastic.

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