A convenient and fast multifunctional unlocking device for fire rescue

Abstract

The convenient and fast fire rescue multifunctional unlocking instrument comprises an eagle jaw chuck, a left operating rod, a right operating rod, a lock core protection cover remover, a unit door lock body switch, a lock core breaker and a lock tongue screw opener; the eagle jaw chuck comprises left and right clamping pieces with adjustable screw holes in the middle; the left operating rod comprises a left upper rod and a left lower rod; the right operating rod comprises a right upper rod and a right lower rod; the left upper rod and the right upper rod are connected with the rear ends of the left and right clamping pieces respectively; the rear parts of the left upper rod, the left lower rod, the right upper rod and the right lower rod are all hollow; the lock core protection cover remover, the lock tongue screw opener, the unit door lock body switch and the lock core breaker are hidden in the hollow parts of the rear parts of the left upper rod, the left lower rod, the right upper rod and the right lower rod respectively; the size of the opening of the anti-theft door lock panel can be adjusted when unlocking; the friction force at the contact part with the lock is large, the clamping effect is good, the unit door lock can be opened, the components are assembled and connected fast, the space occupied after disassembly is small, and the instrument is easy to store, carry and take.

Description

Technical Field

[0001] The present invention relates to the field of fire-fighting unlocking equipment, and in particular to a convenient and fast multifunctional unlocking device for firefighting and rescue. Background Art

[0002] In recent years, with the acceleration of urbanization, the task of firefighting and rescue has become increasingly arduous. Firefighting is to prevent and solve the difficulties and disasters encountered by people in their lives, work, and studies, and to protect people's lives and property. Firefighting and rescue require the use of some specialized tools for door opening and rescue. Lock picking and rescue tools are the equipment used by firefighters during rescue operations.

[0003] However, existing door opening devices used for fire rescue are primarily composed of hammers, crowbars, and screwdrivers. These devices have separate components that cannot be stored, taking up a lot of space and making them inconvenient to carry and store. Furthermore, when using them, prying from one side of the door lock panel where it meets the door causes uneven force, which can easily cause the door lock panel to be crushed on the other side, compromising the ability to replace the lock later.

[0004] In order to solve the above problems, the applicant has applied for a Chinese utility model patent with application number 202222702283.7, a convenient and fast multifunctional lock-opening device for fire rescue, including an eagle claw chuck, two force rods, a lock core breaker and a lock tongue unscrewer; the eagle claw chuck includes a left grabbing piece and a right grabbing piece with an S-shaped longitudinal section, the end of the left grabbing piece is provided with a left grabbing tooth, the width of the left grabbing tooth is greater than the thickness of the middle of the left grabbing piece; the front part of the right grabbing piece is longitudinally divided into an upper right grabbing tooth and a lower right grabbing tooth towards the middle The left grabbing piece has a central portion that is movably inserted into the partition opening in the middle of the right grabbing piece, and a pin is movably inserted in the middle of the two pieces; the outer surfaces of the rear ends of the left and right grabbing pieces are both protruding with square bumps, and the two force rods can be fixed by clamping the square bumps through the square through holes at their front ends; the rear ends of the two force rods are both provided with internal threads, and the middle of the lock core breaker and the lock tongue unscrewer are provided with external threads for screwing into the internal threads and hiding them. This multifunctional anti-theft door unlocker can be easily unlocked by one person during rescue, and will not damage the surface of the door panel of the anti-theft door. Although the above problems have been solved. However, the following new problems may arise in actual use:

[0005] 1. The opening size of the eagle claw chuck cannot be adjusted. For some anti-theft door locks, when they are too close to the door frame or the wall perpendicular to the door panel, the eagle claw chuck cannot be inserted.

[0006] 2. There is no function to open the unit door lock. In some cases, rescue operations need to open the unit door lock before reaching the resident's door, which will delay the time to remove the lock.

[0007] 3. The unlocking component and the force rod are connected by screws. When separating them, multiple turns of rotation are required to unscrew the unlocking component from the force rod, which is time-consuming.

[0008] 4. The booster rod cannot be disassembled for storage, which makes the overall length long and inconvenient to store and carry.

[0009] 5. The front end of the force rod is installed on the outer side of the rear end of the eagle claw chuck, which makes the area wider and has a certain impact on breaking open the door lock in a narrow space.

[0010] 6. When the eagle claw chuck is clamping the anti-theft door lock panel, the contact areas between the eagle claw chuck and the anti-theft door lock panel are smooth, and the insufficient friction affects the clamping effect.

[0011] In view of this, the inventors conducted in-depth research on the above-mentioned defects in the prior art, and thus came up with this case. Summary of the Invention

[0012] In order to solve the above technical problems, we have proposed a convenient and fast multifunctional unlocking device for fire rescue. When removing the lock, the size of the opening of the anti-theft door lock panel can be adjusted to meet the use of the anti-theft door lock in spaces of different sizes. The contact friction is large and the clamping effect is good. It also has the function of opening the unit door lock. The various components can be assembled and connected quickly, and the space occupied after disassembly is small, making it easy to store and carry.

[0013] To achieve the above object, the technical solution of the present invention is as follows:

[0014] A convenient and fast multifunctional lock-opening device for fire rescue, comprising an eagle claw chuck, a left joystick, a right joystick, a lock core protective cover remover, a unit door lock body opener, a lock core breaker, and a lock tongue unscrewer;

[0015] The eagle claw chuck includes a left gripping piece and a right gripping piece with an S-shaped longitudinal section. The middle portion of the rear end of the left gripping piece and the right gripping piece is provided with a screw hole. The end portion of the left gripping piece is laterally convex toward both sides and gradually becomes thinner toward the front, thereby forming a left gripping tooth. The width of the left gripping tooth is greater than the thickness of the middle portion of the left gripping piece. The front portion of the right gripping piece is longitudinally provided with a partition toward the middle, and is divided by the partition into an upper right gripping tooth and a lower right gripping tooth. The thickness of the ends of the upper right gripping tooth and the lower right gripping tooth also gradually becomes thinner toward the front.

[0016] The left joystick includes a left upper rod and a left lower rod, and the right joystick includes a right upper rod and a right lower rod. The front ends of the left upper rod and the right upper rod are each provided with a fixing screw, and the front ends of the left upper rod, the left lower rod, the right upper rod and the right lower rod are all hollow, and a slot is provided on the inner wall of the hollow at the rear ends of the left upper rod, the left lower rod, the right upper rod and the right lower rod;

[0017] The middle portion of the left grabbing piece is inserted into the partition opening in the middle portion of the right grabbing piece, and at least one pin hole is horizontally passed through the middle portions of the left grabbing piece and the right grabbing piece, and a pin shaft is movably inserted in the pin hole, and the upper right grabbing tooth and the lower right grabbing tooth can open and close with the left grabbing tooth around the pin shaft; the left upper rod and the right upper rod can be respectively inserted into the screw holes at the rear ends of the left grabbing piece and the right grabbing piece through the fixing screws at their front ends to fix them;

[0018] The front end of the left lower rod extends forward to connect the lock cylinder protective cover remover, and a buckle is provided at the connection, and the lock cylinder protective cover remover can be inserted into the hollow core from the rear end of the left upper rod to be hidden, and then the buckle at the connection between the left lower rod and the lock cylinder protective cover remover is inserted into the slot provided on the inner wall of the hollow core at the rear end of the left upper rod to be fixed; the right lower rod extends forward to connect the unit door lock body switch, and a buckle is also provided at the connection, and the unit door lock body switch can be inserted into the hollow core from the rear end of the right upper rod to be hidden, and then the right lower rod and the unit door are locked. The buckle at the connection of the lock body switch is inserted into the slot provided on the inner wall of the hollow core at the rear end of the right upper rod and fixed; the middle part of the lock core breaker is also provided with a buckle, and its front part can be inserted into the hollow core from the rear end of the right lower rod and hidden, and then the buckle in the middle part of the lock core breaker is inserted into the slot provided on the inner wall of the hollow core at the rear end of the right lower rod and fixed; the middle part of the lock tongue unscrewer is also provided with a buckle, and its front part can be inserted into the hollow core from the rear end of the left lower rod and hidden, and then the buckle in the middle part of the lock tongue unscrewer is inserted into the slot provided on the inner wall of the hollow core at the rear end of the left lower rod and fixed.

[0019] Preferably, the lock core protective cover remover includes an insertion rod and a bent cone head, the rear end of the insertion rod is fixedly connected to the middle part of the front end of the left lower rod, and the bent cone head is connected to the front end of the insertion rod.

[0020] Preferably, the unit door lock switch includes a rod body and an opening head, the main body of the opening head is flat, and an opening groove is provided in the middle of the front end of the head; the rear end of the rod body is fixedly connected to the middle of the front end of the lower right rod, and the front end of the rod body is connected to the rear end of the opening head.

[0021] Preferably, the lock core breaker includes a holding rod, a square shaft turner and a lock core destroyer, the holding rod is arranged in the middle of the lock core breaker, a buckle is provided on the front side of the holding rod, and its front end extends forward and is connected to the square shaft turner, the front end of the square shaft turner is provided with a square shaft straight bayonet, and the inner end of the square shaft straight bayonet is also provided with a square shaft side bayonet, and the sizes of the square shaft straight bayonet and the square shaft side bayonet are adapted to the size of the square shaft in the universal anti-theft door lock; the holding rod extends to the rear end and is connected to the lock core destroyer, and a lock core slot is provided in the middle of the rear end of the lock core destroyer, and the size of the lock core slot is adapted to the size of the lock core of the universal anti-theft door lock.

[0022] Preferably, the lock tongue opener comprises a square hole insert, an elongated rod, a handle, a support part and a lock tongue opening end, the elongated rod is arranged in the middle of the lock tongue opener, and the front end of the elongated rod is hingedly connected with the rear end of the square hole insert, the rear end of the elongated rod is fixedly connected with the middle part of the front end of the handle, the rear end of the handle is fixedly connected with the front end of the support part, the rear end of the support part is fixedly connected with the middle part of the front end of the lock tongue opening end, and the side of the lock tongue opening end is provided with a pressing block.

[0023] Preferably, the middle part of the left and right gripping pieces is vertically and transversely provided with three pin holes, namely an upper pin hole, a middle pin hole and a lower pin hole, and the pin shaft can be movably inserted into the upper pin hole, the middle pin hole or the lower pin hole to adjust the opening degree between the left gripping teeth and the upper and lower right gripping teeth.

[0024] Preferably, the front part of the left gripping piece is provided with a strip-shaped tooth pattern on the inner side of the bending part, and the strip-shaped tooth pattern is arranged along the thickness direction of the left gripping piece.

[0025] Preferably, the front part of the left gripping piece is provided with a strip-shaped tooth pattern on the inner side of the bending part, and the strip-shaped tooth pattern is arranged along the thickness direction of the left gripping piece.

[0026] Preferably, the rear part of the left and right upper rods is provided with an anti-slip pattern on the surface of the circumferential surface, and the rear end of the left and right lower rods is further provided with an insulating sleeve.

[0027] Preferably, the rear end of the left and right upper rods is provided with an anti-slip pattern on the surface of the circumferential surface, and the rear end of the left and right lower rods is further provided with an insulating sleeve.

[0028] The present invention comprises an eagle claw chuck, a left joystick, a right joystick, a lock cylinder protective cover remover, a unit door lock body switch, a lock cylinder breaker, and a lock tongue unscrew. By movably inserting a pin into different pin holes in the middle of the eagle claw chuck, the eagle claw chuck can be adjusted to grip the opening of the security door lock panel, meeting the needs of different spaces. Furthermore, the front inner side of the eagle claw chuck is provided with strip-shaped teeth at the contact points with both sides of the security door lock panel to increase friction and enhance the gripping effect. After assembly, the left and right joysticks can not only be used with the eagle claw chuck to break open the security door lock panel, door handle, and lock sleeve, but can also be disassembled into a left upper rod, a left lower rod, a right upper rod, and a right lower rod for easy storage and transportation. Furthermore, the left upper rod can conceal the lock cylinder protective cover remover, the left lower rod can conceal the lock tongue unscrew, the right upper rod can conceal the unit door lock body switch, and the right lower rod can conceal the lock cylinder breaker. The unit door lock body opener can be opened by removing the unit door lock housing with an eagle claw chuck, thus providing the ability to open the unit door lock. Furthermore, the connections between the upper left and lower left levers, the upper right and lower right levers, the lower left lever and the lock tongue unscrewer, and the lower right lever and the lock cylinder breaker all utilize slots and snap connections. This allows for fast assembly, connection, and disassembly of the components. Once disassembled, the device takes up minimal space and is easy to store and carry. Operation is simple and quick for one person, significantly reducing rescue time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is an exploded view of a convenient and fast multifunctional unlocking device for fire rescue disclosed in this embodiment;

[0031] Figure 2 This is a schematic diagram of the structure of a convenient and fast multifunctional unlocking device for fire rescue after assembly disclosed in this embodiment;

[0032] Figure 3 This is a diagram showing the use of a lock bolt unscrewer in a convenient and fast multifunctional lock-opening device for fire rescue disclosed in this embodiment;

[0033] Figure 4 This is a schematic structural diagram of a convenient and fast multifunctional unlocking device for fire rescue disclosed in this embodiment before the card slot and the card buckle are connected;

[0034] Figure 5This is a schematic structural diagram of a convenient and fast multifunctional unlocking device for fire rescue disclosed in this embodiment after the card slot and the card buckle are connected;

[0035] Figure 6 This is a top view of the eagle claw chuck in a convenient and fast multifunctional lock-picking device for firefighting and rescue disclosed in this embodiment.

[0036] The numbers in the figure represent the corresponding component names:

[0037] 1. Eagle claw chuck 11. Left gripper 111. Left gripper 12. Right gripper 121. Upper right gripper 122. Lower right gripper 2. Left operating lever 21. Upper left lever 22. Lower left lever 3. Right operating lever 31. Upper right lever 32. Lower right lever 4. Lock cylinder protective cover remover 41. Insert rod 42. Bending cone 5. Unit door lock body switch 51. Lever 52. Opening head 521. Opening slot 6. Lock cylinder breaker 61. Gripping rod 62. Square shaft turner 621. Square shaft straight bayonet 622. Square shaft side bayonet 63. Lock cylinder destroyer 631. Lock cylinder slot 7. Lock tongue unscrewer 71. Square hole insert 72. Slender rod 73. Handle 74. Support 75. Lock tongue unscrewing end 76. Pressure block 8. Fixing screw 9. Slot 10. Pin 13. Buckle 14. Strip teeth 15. Anti-slip groove 16. Insert mark 17. Insulation sleeve DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] The present invention will be further described in detail below with reference to examples and specific implementation methods.

[0040] Example

[0041] like Figures 1-6 As shown, a convenient and fast multifunctional lock opening device for fire rescue, including an eagle claw chuck 1, a left joystick 2, a right joystick 3, a lock core protective cover remover 4, a unit door lock body switch 5, a lock core breaker 6 and a lock tongue unscrewer 7;

[0042] The eagle claw chuck 1 includes a left gripping piece 11 and a right gripping piece 12 with an S-shaped longitudinal section. The middle portion of the rear end of the left gripping piece 11 and the right gripping piece 12 is provided with a screw hole. The end portion of the left gripping piece 11 is laterally convex toward both sides and gradually becomes thinner toward the front, forming a left gripping tooth 111. The width of the left gripping tooth 111 is greater than the thickness of the middle portion of the left gripping piece 11. The front portion of the right gripping piece 12 is longitudinally provided with a partition toward the middle, and is divided by the partition into an upper right gripping tooth 121 and a lower right gripping tooth 122. The thickness of the ends of the upper right gripping tooth 121 and the lower right gripping tooth 122 also gradually becomes thinner toward the front.

[0043] The left joystick 2 includes a left upper rod 21 and a left lower rod 22, and the right joystick 3 includes a right upper rod 31 and a right lower rod 32. The front ends of the left upper rod 21 and the right upper rod 31 are each provided with a fixing screw 8, and the front ends of the left upper rod 21, the left lower rod 22, the right upper rod 31 and the right lower rod 32 are all hollow, and the rear ends of the hollow inner walls of the left upper rod 21, the left lower rod 22, the right upper rod 31 and the right lower rod 32 are provided with a slot 9;

[0044] The middle part of the left grabbing piece 11 is inserted into the partition opening in the middle part of the right grabbing piece 12, and three pin holes are horizontally passed through the middle parts of the left grabbing piece 11 and the right grabbing piece 12, namely the upper pin hole, the middle pin hole and the lower pin hole. According to the different sizes of spaces around the place where the anti-theft door lock is located, a pin shaft 10 is movably inserted in the upper pin hole, the middle pin hole or the lower pin hole to adjust the opening between the left grabbing tooth 11 and the upper right grabbing tooth 121 and the lower right grabbing tooth 122. When the space on both sides of the anti-theft door lock panel is small, the pin shaft 10 is inserted into the upper pin hole and fixed. This makes the opening between the left grabbing tooth 11 and the upper right grabbing tooth 121 and the lower right grabbing tooth 122 smaller and will not be blocked by the door frames or side walls on both sides. When the space on both sides of the anti-theft door lock panel is large, the pin shaft 10 is inserted into the middle pin hole and fixed, which makes the opening between the left catcher 11 and the upper right catcher 121 and the lower right catcher 122 of medium size, and the opening between the left catcher 11 and the upper right catcher 121 and the lower right catcher 122 is also medium size; if the space on both sides of the anti-theft door lock panel is large enough, the pin shaft 10 is inserted into the lower pin hole and fixed, which maximizes the opening between the left catcher 11 and the upper right catcher 121 and the lower right catcher 122, and also maximizes the opening between the left catcher 11 and the upper right catcher 121 and the lower right catcher 122, thereby meeting the lock disassembly needs of places of various sizes. After the pin 10 is inserted and fixed, the upper right grabber 121 and the lower right grabber 122 can open and close with the left grabber 11 around the pin 10; the upper left rod 21 and the upper right rod 31 can be respectively inserted into the screw holes at the rear ends of the left grabbing piece 11 and the right grabbing piece 12 to fix them through the fixing screws 8 at their front ends;

[0045] The front end of the left lower rod 22 extends forward to connect the lock cylinder protective cover remover 4, and a buckle 13 is provided at the connection, and the lock cylinder protective cover remover 4 can be inserted into the hollow core from the rear end of the left upper rod 21 to hide it, and then the buckle 13 at the connection between the left lower rod 22 and the lock cylinder protective cover remover 4 is inserted into the slot 9 provided on the inner wall of the hollow core at the rear end of the left upper rod 21 to fix it; the right lower rod 32 extends forward to connect the unit door lock body switch 5, and a buckle 13 is also provided at the connection, and the unit door lock body switch 5 can be inserted into the hollow core from the rear end of the right upper rod 31 to hide it, and then the right lower rod 32 and the unit door lock are fixed. The buckle 13 at the connection of the body switch 5 is inserted into the slot 9 provided on the inner wall of the hollow core at the rear end of the upper right rod 31 and fixed; the middle part of the lock core breaker 6 is also provided with a buckle 13, and its front part can be inserted into the hollow core from the rear end of the lower right rod 32 and hidden, and then the buckle 13 in the middle part of the lock core breaker 6 is inserted into the slot 9 provided on the inner wall of the hollow core at the rear end of the lower right rod 32 and fixed; the middle part of the lock tongue unscrewer 7 is also provided with a buckle 13, and its front part can be inserted into the hollow core from the rear end of the lower left rod 22 and hidden, and then the buckle 13 in the middle part of the lock tongue unscrewer 7 is inserted into the slot 9 provided on the inner wall of the hollow core at the rear end of the lower left rod 22 and fixed.

[0046] The lock cylinder protective cover remover 4 includes an insert rod 41 and a bent cone head 42. The rear end of the insert rod 41 is fixedly connected to the front middle portion of the left lower rod 22, and the bent cone head 42 is connected to the front end of the insert rod 41. The unit door lock body switch 5 includes a rod body 51 and an opening head 52. The main body of the opening head 52 is flat, and an opening slot 521 is provided in the middle of the front end of the head. The rear end of the rod body 51 is fixedly connected to the front middle portion of the right lower rod 32, and the front end of the rod body 51 is connected to the rear end of the opening head 52. The lock core breaker 6 includes a holding rod 61, a square shaft turner 62 and a lock core destroyer 63. The holding rod 61 is arranged in the middle of the lock core breaker 6. A buckle 13 is provided on the front side of the holding rod 61. The front end of the holding rod 61 extends forward and is connected to the square shaft turner 62. A square shaft straight bayonet 621 is provided at the front end of the square shaft turner 62. A square shaft side bayonet 622 is also provided at the inner end of the square shaft straight bayonet 621. The sizes of the square shaft straight bayonet 621 and the square shaft side bayonet 622 are adapted to the size of the square shaft in a universal anti-theft door lock. The holding rod 61 extends to the rear end and is connected to the lock core destroyer 63. A lock core slot 631 is provided in the middle of the rear end of the lock core destroyer 63. The size of the lock core slot 631 is adapted to the size of the lock core of a universal anti-theft door lock. The lock tongue unscrewer 7 includes a square hole insert 71, a slender rod 72, a handle 73, a support portion 74 and a lock tongue unscrewing end 75. The slender rod 72 is arranged in the middle of the lock tongue unscrewer 7, and the front end of the slender rod 72 is hinged to the rear end of the square hole insert 71, the rear end of the slender rod 72 is fixedly connected to the middle of the front end of the handle 73, the rear end of the handle 73 is fixedly connected to the front end of the support portion 74, the rear end of the support portion 74 is fixedly connected to the middle of the front end of the lock tongue unscrewing end 75, and a pressure block 76 is provided on the side of the lock tongue unscrewing end 75.

[0047] At the same time, the front of the left gripper 11 is provided with striped teeth 14 on the inner side of the bend, and the striped teeth 14 are arranged along the thickness direction of the left gripper 11. The front of the upper right gripper 121 and the lower right gripper 122 are also provided with striped teeth 14 on the inner side of the bend, and the striped teeth 14 are arranged along the thickness direction of the upper right gripper 121 and the lower right gripper 122, respectively. This can increase the friction when grasping the panel of the security door lock, better helping the eagle claw chuck 1 to quickly grasp the security door lock panel and remove it.

[0048] Furthermore, to prevent slipping when firefighters grasp the handles with force, anti-slip grooves 15 are provided on the rear circumference of the upper left and upper right rods 21 and 31. Insulation sleeves 17 are also provided on the rear ends of the lower left and lower right rods 22 and 32 to prevent electrical leakage from the security door lock during rescue operations. Insertion marks 16 are engraved on the inner hollow walls of the rear ends of the upper left, lower left, upper right, and lower right rods 21, 22, 31, and 32, respectively, on the outer walls opposite the slot 9. These insertion marks 16 are recessed into the outer walls of the lower ends of the upper left, lower left, upper right, and lower right rods 21, 22, 31, and 32, facing upward. This design is to remind firefighters to quickly insert the lock cylinder protective cover remover 4, the unit door lock body switch 5, the lock cylinder breaker 6, and the lock tongue twister 7 here to hide and secure them. When assembling this convenient and fast multifunctional fire rescue unlocking device, firefighters only need to find the corresponding insertion mark 16 next to the insertion point, align the buckle 13 with the slot 9, fully insert the lock cylinder protective cover remover 4, the unit door lock body switch 5, the lock cylinder breaker 6, and the lock tongue twister 7, and then rotate them so that the buckle 13 is locked into the bend at the front end of the slot 9 to lock it. When disassembling, rotate the buckle 13 in the opposite direction to move it from the bend at the front end of the slot 9 to the straight notch of the slot 9, and then pull it out with force. It is convenient and quick.

[0049] The working principle of this convenient and fast multifunctional unlocking device for fire rescue is as follows: when the firefighters arrive at the rescue site of the anti-theft door, they will first align the pre-assembled eagle claw clamp 1 with the anti-theft door lock, then grasp the rear ends of the left operating lever 2 and the right operating lever 3 with both hands and pull them apart to open the eagle claw clamp 1, and then place the lock panel of the anti-theft door lock between the opening of the eagle claw clamp 1, so that the left grasping tooth 111 of the left grasping piece 11 is aligned with the narrow gap between the left side of the lock panel and the door panel, and the upper right grasping tooth 121 and the lower right grasping tooth 122 of the right grasping piece 12 are aligned with the right side of the lock panel and ... The firefighter pulls back the left and right joysticks 2 and 3 to drive the eagle claw chuck 1 to detach the lock panel from the door panel and expose the lock core. The firefighter then removes the left and right operating levers 2 and 3 from the claw chuck 1, and then removes the lock cylinder protective cover remover 4, the unit door lock body switch 5, the lock cylinder breaker 6, and the lock tongue twister 7. The firefighter then uses the lock cylinder destroyer 63 on the lock cylinder breaker 6 to align it with the exposed portion of the lock cylinder, and engages the lock cylinder engaging slot 631 with the lower portion of the lock cylinder. The firefighter then forcefully pulls the lock cylinder sideways to disengage the lock cylinder from the lock sleeve. Finally, the firefighter inserts the square hole insert 71 of the lock tongue twister 7 into the square hole left after the lock cylinder is disengaged from the lock sleeve. The firefighter then holds the square hole insert 71 with one hand and holds the handle 73 with the other hand. The handle 73 is then rotated radially to pull the lock tongue into the lock via the connector at the root of the lock tongue, thereby opening the security door.

[0050] Of course, if the firefighters encounter the need to break open a unit door lock during the lock removal and rescue process, they also use the eagle claw chuck 1 to first grab and break open the square lock shell outside the unit door lock, then insert the unit door lock body switch 5 into the door, so that the opening head 52 extends into the lock hole and the opening groove 521 engages the internal components to rotate the unit door lock. Similarly, when encountering an anti-theft door lock that needs to be removed and needs to be removed, the bent cone head 42 of the lock core protection cover remover 4 is inserted into the gap between the lock core protection cover and the lock core and pried outward to remove it. In addition, when encountering a situation where the square shaft of the lock is exposed after removal, it is only necessary to engage the square shaft straight bayonet 621 or the square shaft side bayonet 622 of the lock core breaker 6 according to its position and rotate the square shaft to bring the lock tongue out of the lock hole through its connecting piece, thereby also completing the lock removal.

[0051] In this case, the application is provided with the eagle claw chuck 1, the left operating rod 2, the right operating rod 3, the lock core protective cover remover 4, the unit door lock body switcher 5, the lock core breaker 6 and the lock tongue screw opener 7, by movably inserting the pin shaft 10 into different pin holes in the middle of the eagle claw chuck 1, the size of the opening of the eagle claw chuck 1 can be adjusted to meet the use of different sizes of space where the security door lock is located, and the front inner side of the eagle claw chuck 1 is provided with a strip-shaped tooth 14 to increase the friction and improve the clamping effect. The left operating rod 2 and the right operating rod 3 can be used to break and remove the security door lock panel, door handle and lock sleeve after being assembled, and can be disassembled into left upper rod 21, left lower rod 22, right upper rod 31 and right lower rod 32 for storage and transportation, and the lock core protective cover remover 4 can be hidden in the left upper rod 21, the lock tongue screw opener 7 can be hidden in the left lower rod 22, the unit door lock body switcher 5 can be hidden in the right upper rod 31, and the lock core breaker 6 can be hidden in the right lower rod 32. The unit door lock body switcher 5 can open the unit door lock after the eagle claw chuck 1 breaks and removes the unit door lock shell, thereby having the function of opening the unit door lock. At the same time, the connection between the left upper rod 21 and the left lower rod 22, the right upper rod 31 and the right lower rod 32, the left lower rod 22 and the lock tongue screw opener 7, and the right lower rod 32 and the lock core breaker 6 all adopt the connection mode of the clamping groove 9 and the buckle 13, so that the assembly and disassembly of each part is fast, the occupied space is small after disassembly, and it is easy to store and carry. One person can easily operate, which is convenient, simple and fast, and greatly saves the rescue time. Thus, the novel design, reasonable structure and good application effect are achieved.

[0052] The above is only one preferred embodiment of the multifunctional unlocking device for fire rescue, and it should be pointed out that those skilled in the art can make some modifications and improvements without departing from the inventive concept, which are within the protection scope of the application.

Claims

1. A convenient and fast multifunctional unlocking device for fire rescue, characterized in that: Includes eagle claw chuck, left joystick, right joystick, lock core protective cover remover, unit door lock body opener, lock core breaker and lock tongue unscrewer; The eagle claw chuck includes a left gripping piece and a right gripping piece with an S-shaped longitudinal section. The middle portion of the rear end of the left gripping piece and the right gripping piece is provided with a screw hole. The end portion of the left gripping piece is laterally convex toward both sides and gradually becomes thinner toward the front, thereby forming a left gripping tooth. The width of the left gripping tooth is greater than the thickness of the middle portion of the left gripping piece. The front portion of the right gripping piece is longitudinally provided with a partition toward the middle, and is divided by the partition into an upper right gripping tooth and a lower right gripping tooth. The thickness of the ends of the upper right gripping tooth and the lower right gripping tooth also gradually becomes thinner toward the front. The left joystick includes a left upper rod and a left lower rod, and the right joystick includes a right upper rod and a right lower rod. The front ends of the left upper rod and the right upper rod are each provided with a fixing screw, and the front ends of the left upper rod, the left lower rod, the right upper rod and the right lower rod are all hollow, and a slot is provided on the inner wall of the hollow at the rear ends of the left upper rod, the left lower rod, the right upper rod and the right lower rod; The middle portion of the left grabbing piece is inserted into the partition opening in the middle portion of the right grabbing piece, and at least one pin hole is horizontally passed through the middle portions of the left grabbing piece and the right grabbing piece, and a pin shaft is movably inserted in the pin hole, and the upper right grabbing tooth and the lower right grabbing tooth can open and close with the left grabbing tooth around the pin shaft; the left upper rod and the right upper rod can be respectively inserted into the screw holes at the rear ends of the left grabbing piece and the right grabbing piece through the fixing screws at their front ends to fix them; The front end of the left lower rod extends forward to connect the lock cylinder protective cover remover, and a buckle is provided at the connection, and the lock cylinder protective cover remover can be inserted into the hollow core from the rear end of the left upper rod to be hidden, and then the buckle at the connection between the left lower rod and the lock cylinder protective cover remover is inserted into the slot provided on the inner wall of the hollow core at the rear end of the left upper rod to be fixed; the right lower rod extends forward to connect the unit door lock body switch, and a buckle is also provided at the connection, and the unit door lock body switch can be inserted into the hollow core from the rear end of the right upper rod to be hidden, and then the right lower rod and the unit door are locked. The buckle at the connection of the lock body switch is inserted into the slot provided on the inner wall of the hollow core at the rear end of the right upper rod and fixed; the middle part of the lock core breaker is also provided with a buckle, and its front part can be inserted into the hollow core from the rear end of the right lower rod and hidden, and then the buckle in the middle part of the lock core breaker is inserted into the slot provided on the inner wall of the hollow core at the rear end of the right lower rod and fixed; the middle part of the lock tongue unscrewer is also provided with a buckle, and its front part can be inserted into the hollow core from the rear end of the left lower rod and hidden, and then the buckle in the middle part of the lock tongue unscrewer is inserted into the slot provided on the inner wall of the hollow core at the rear end of the left lower rod and fixed.

2. A convenient and fast multifunctional unlocking device for fire rescue according to claim 1, characterized in that: The lock core protective cover remover includes an insert rod and a bent cone head. The rear end of the insert rod is fixedly connected to the middle part of the front end of the left lower rod, and the bent cone head is connected to the front end of the insert rod.

3. A convenient and fast multifunctional unlocking device for fire rescue according to claim 2, characterized in that: The unit door lock body switch includes a rod body and an opening head. The main body of the opening head is flat, and an opening groove is provided in the middle of its front end head; the rear end of the rod body is fixedly connected to the middle of the front end of the right lower rod, and the front end of the rod body is connected to the rear end of the opening head.

4. A convenient and fast multifunctional unlocking device for fire rescue according to claim 3, characterized in that: The lock core breaker includes a holding rod, a square shaft turner and a lock core destroyer. The holding rod is arranged in the middle of the lock core breaker, and a buckle is provided on the front side of the holding rod. The front end of the holding rod extends forward and is connected to the square shaft turner. The front end of the square shaft turner is provided with a square shaft straight bayonet, and the inner end of the square shaft straight bayonet is also provided with a square shaft side bayonet, and the sizes of the square shaft straight bayonet and the square shaft side bayonet are adapted to the size of the square shaft in the universal anti-theft door lock; the holding rod extends to the rear end and is connected to the lock core destroyer, and a lock core slot is provided in the middle of the rear end of the lock core destroyer, and the size of the lock core slot is adapted to the size of the lock core of the universal anti-theft door lock.

5. A convenient and fast multifunctional unlocking device for fire rescue according to claim 4, characterized in that: The lock tongue unscrewer includes a square hole insert, a slender rod, a handle, a support part and a lock tongue unscrewing end. The slender rod is arranged in the middle of the lock tongue unscrewer, and the front end of the slender rod is hinged to the rear end of the square hole insert, the rear end of the slender rod is fixedly connected to the middle part of the front end of the handle, the rear end of the handle is fixedly connected to the front end of the support part, the rear end of the support part is fixedly connected to the middle part of the front end of the lock tongue unscrewing end, and a pressure block is provided on the side of the lock tongue unscrewing end.

6. A convenient and fast multifunctional unlocking device for fire rescue according to claim 5, characterized in that: There are three pin holes running horizontally through the upper and lower middle parts of the left grabbing piece and the right grabbing piece, namely the upper pin hole, the middle pin hole and the lower pin hole. The pin shaft can be movably inserted in the upper pin hole, the middle pin hole or the lower pin hole to adjust the opening between the left grabbing tooth and the upper right grabbing tooth and the lower right grabbing tooth.

7. A convenient and fast multifunctional unlocking device for fire rescue according to claim 6, characterized in that: The front part of the left gripping piece is provided with strip-shaped tooth patterns on the inner side surface of the bend, and the strip-shaped tooth patterns here are arranged along the thickness direction of the left gripping piece.

8. A convenient and fast multifunctional unlocking device for fire rescue according to claim 7, characterized in that: The front parts of the upper right grabber and the lower right grabber are both provided with strip-shaped tooth patterns on the inner side surfaces of the bending parts, and the strip-shaped tooth patterns here are respectively arranged along the thickness direction of the upper right grabber and the lower right grabber.

9. A convenient and fast multifunctional unlocking device for fire rescue according to claim 8, characterized in that: The rear circumferential surfaces of the upper left rod and the upper right rod are both provided with anti-skid patterns, and the rear ends of the lower left rod and the lower right rod are also covered with insulating sleeves.

10. A convenient and fast multifunctional unlocking device for fire rescue according to claim 9, characterized in that: Insertion marks are engraved on the outer walls opposite to the slots on the inner walls of the hollow cores at the rear ends of the upper left rod, lower left rod, upper right rod and lower right rod. The insertion marks are in the shape of upward arrows recessed in the outer walls of the lower ends of the upper left rod, lower left rod, upper right rod and lower right rod.

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