Emergency escape fireproof lock with height difference between inside and outside

Abstract

The invention relates to an inside and outside height difference emergency escape fireproof lock, and relates to the technical field of door locks. The emergency escape fireproof lock comprises a mounting frame, a locking mechanism, an outer door handle and an inner door switch, the locking mechanism comprises a lock frame, the locking mechanism further comprises a driving frame and a driving assembly, the driving frame is rotationally connected with the mounting frame, the driving frame drives the lock frame to slide through the driving assembly, and the outer door handle is connected with the inner door switch. The outer door handle is located above the driving frame and provided with a lifting frame, the bottom end of the lifting frame extends downwards and is connected with the driving frame, and the outer door handle drives the driving frame to rotate by controlling the lifting frame to move. The door lock has the effect that the probability that a child opens the door lock outside the door is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of door locks, and in particular to an emergency escape fireproof lock with a height difference between the inside and outside of the door. Background Art

[0002] With the continuous development of social economy and the increasing level of science and technology, people's safety awareness is also constantly improving. Door locks, as a mechanism for locking the door body and the door frame or wall, can effectively prevent unscrupulous elements from opening the door body, and play an important role in people's daily lives.

[0003] There is a double door lock in the prior art, which includes a mounting frame, which is used to be installed on the door, and a locking mechanism is also provided on the mounting frame, and the locking mechanism includes a lock frame, a rotating frame, a driving assembly, an inner door handle and an outer door handle. The lock frame is rotatably connected to the mounting frame and is used to be inserted into the door frame. The rotating frame is rotatably connected to the mounting frame, and the lock frame is driven to rotate by the driving assembly. The inner door handle and the outer door handle are respectively installed inside and outside the door and are at the same height. The inner door handle and the outer door handle are both connected to the rotating frame to drive the rotating frame to rotate. When in use, the user rotates the inner door handle or the outer door handle to rotate the rotating frame, and the rotating frame drives the lock frame to rotate through the driving assembly, so that the door body and the door frame are released from the locked state.

[0004] With regard to the above-mentioned related technologies, considering the needs of users of different ages and heights, the position of the inner door handle is generally set lower so that users of different heights can turn the inner door handle to open the door. However, in the prior art, the inner door handle and the outer door handle are directly connected to the rotating frame, so that the inner door handle and the outer door handle are at the same height, which makes it easy for children outside the door to open the door through the outer door handle, thereby disturbing people inside the door who are in a meeting, office or resting state, so there is room for improvement. Summary of the invention

[0005] In order to reduce the probability of children opening the door lock from outside the door, the present application provides an emergency escape fireproof lock with a height difference between the inside and outside.

[0006] The present application provides an emergency escape fireproof lock with a height difference between inside and outside, which adopts the following technical solution: An emergency escape fireproof lock with an inside-outside height difference comprises a mounting frame, a locking mechanism, an outer door handle and an inner door switch, the locking mechanism comprises a lock frame, the locking mechanism further comprises a drive frame and a drive assembly, the drive frame is rotatably connected to the mounting frame, the drive frame drives the lock frame to slide through the drive assembly, the outer door handle is located above the drive frame, and is provided with a lifting frame, the bottom end of the lifting frame extends downward and is connected to the drive frame, and the outer door handle drives the drive frame to rotate by controlling the movement of the lifting frame.

[0007] By adopting the above technical solution, compared with the prior art, in which the outer door handle and the inner door handle are directly connected to the rotating frame, the outer door handle and the inner door handle are at the same height. The present application arranges the driving frame, the outer door handle and the lifting frame so that the outer door handle can be arranged above the driving frame, and the outer door handle can be displaced by driving the lifting frame, thereby driving the driving frame to rotate. There is no need to arrange the outer door handle at the same height as the inner door switch, and the outer door handle can drive the driving frame to rotate, thereby effectively increasing the setting height of the outer door handle, effectively reducing the probability of children touching the outer door handle outside the door, thereby reducing the probability of children opening the door lock through the outer door handle.

[0008] Preferably, the lock frame includes an upper locking frame and a lower locking frame, both of which are slidably connected to the mounting frame, the top end of the upper locking frame extends upward and is used to be inserted into a door frame or a wall, the bottom end of the lower locking frame extends downward and is used to be inserted into a door frame or a wall, and the driving assembly is used to drive the upper locking frame and the lower locking frame to slide in opposite directions together.

[0009] By adopting the above technical scheme, the specific setting of the lock frame enables the upper locking frame and the lower locking frame to be inserted into the door frame or wall under the drive of the driving component, so as to achieve locking of the upper and lower sides of the door body, effectively increasing the locking effect of the door lock of the present application on the door body, and increasing the use effect of the door lock of the present application; at the same time, the driving frame in the present application can drive the upper locking frame and the lower locking frame to slide in the opposite direction through the driving component, which effectively facilitates the user to unlock and drive the upper unlocking frame and the lower unlocking frame.

[0010] Preferably, a retaining groove is provided on the side wall of the upper locking frame, and a fixing mechanism is also provided on the top of the upper locking frame, the fixing mechanism includes an additional frame and a retaining assembly, the additional frame is used to be installed on the door body, the retaining assembly includes a retaining frame and a reset member, one end of the retaining frame is rotatably connected to the additional frame, the retaining frame is provided with a retaining part, the retaining part is used to be inserted into the retaining groove, and the reset member is used to reset the retaining frame.

[0011] By adopting the above technical solution, the setting of the retaining component makes it possible for the upper locking frame to be completely separated from the door frame or the wall, the retaining frame can be continuously inserted into the retaining groove under the elastic force of the reset member, thereby locking the upper locking frame, so that the upper locking frame maintains the current unlocked position, and at the same time the driving frame maintains the current position, thereby making the upper locking frame and the lower locking frame both remain in the unlocked state, so that the user only needs to unlock the door lock of the present application once, so that the upper locking frame and the lower locking frame can both remain in the unlocked state, which effectively facilitates the user to open the door body.

[0012] Preferably, a reinforcement groove is provided on the side wall of the upper locking frame, and the fixing mechanism also includes a reinforcement component, the reinforcement component includes a reinforcement frame and a reset spring sheet, one end of the reset spring sheet is connected to the additional frame, and the other end is connected to one end of the reinforcement frame, and the other end of the reinforcement frame is inserted into the reinforcement groove.

[0013] By adopting the above technical solution, the reinforcement component is set so that the reinforcement frame can be inserted into the reinforcement groove, thereby hindering the displacement of the upper locking frame, effectively reducing the probability of the upper locking frame displacing downward under its own gravity when the upper locking frame is inserted into the door frame or wall, thereby ensuring the locking effect of the upper locking frame.

[0014] Preferably, the driving assembly includes an upper connecting frame and a lower connecting frame, one end of the upper connecting frame is rotatably connected to one end of the driving frame, and the other end is rotatably connected to the bottom end of the upper locking frame, one end of the lower connecting frame is rotatably connected to the other end of the driving frame, and the other end is rotatably connected to the top end of the lower locking frame, and the middle part of the driving frame is rotatably connected to the mounting frame.

[0015] The camming mechanism that is used for the locking cam and the locking cam is a very convenient way of explaining why the locking cam and the locking cam are so effective in preventing the locking cam from sliding relative to each other.

[0016] Preferably, the inner door switch includes a fixed frame, a pushing frame, a switch member and a switch frame, the fixed frame is used to be installed on the inner side of the door body, the pushing frame is slidably connected to the fixed frame, and one end of the pushing frame extends out of the fixed frame, the switch frame is rotatably connected to the mounting frame, one end of the switch frame abuts against one end of the driving frame, the pushing frame drives the switch frame to rotate through the switch member, and drives the driving frame to rotate by abutting.

[0017] By adopting the above technical scheme, the specific setting of the inner door switch allows the user to push the push frame to slide, so that the push frame passes through the switch member, drives the switch frame to rotate, and makes the switch frame continuously abut against one end of the drive frame, thereby pushing the drive frame to rotate, and realizing the driving of the drive frame inside the door; by setting an unlocking method of pushing the push frame to slide inside the door, it can meet the unlocking needs of various personnel to a great extent, so that the old, young, sick and disabled people can unlock the door lock of the present application by pushing the push frame, which effectively facilitates the unlocking of the user and increases the unlocking speed of the door lock of the present application, effectively improving the speed of the user to unlock and open the door in an emergency.

[0018] Preferably, the switch member includes an intermediate frame, which is located between the fixed frame and the pushing frame and rotates with the fixed frame. One end of the intermediate frame abuts against the pushing frame, and the other end of the intermediate frame extends to a side of the switch frame close to the driving frame and abuts against an end of the switch frame away from the driving frame.

[0019] By adopting the above technical solution, the setting of the intermediate frame enables the user to push the pushing frame to slide, and the pushing frame can abut against one end of the intermediate frame, thereby pushing the intermediate frame to slide, and the other end of the intermediate frame abuts against the switch frame, thereby pushing one end of the switch frame to move, so that the switch frame rotates as a whole, and the switch frame is driven, which effectively ensures that the pushing frame drives the switch frame smoothly.

[0020] Preferably, a reset assembly is also provided on the fixed frame, and the reset assembly includes a reset frame and a reset torsion spring. The reset frame is located between the fixed frame and the pushing frame and is rotatably connected to the fixed frame. One end of the reset frame is against the pushing frame, and the reset torsion spring is used for resetting the reset frame.

[0021] By adopting the above technical solution and setting the reset assembly, the reset frame can continuously abut against the side wall of the push frame under the elastic force of the reset torsion spring, so that the push frame can return to its initial position under the abutment of the reset frame for the user's next use, which effectively facilitates the user's operation of the push frame and facilitates the user to unlock the door lock of the present application.

[0022] Preferably, the lifting frame includes a driving frame, an intermediate rope and a hook frame, one end of the driving frame is installed on the outer door handle, and the other end of the driving frame extends below the rotation axis of the outer door handle, one end of the intermediate rope is connected to the bottom end of the driving frame, and the other end extends downward and is connected to the hook frame, and the hook frame is sleeved on one end of the driving frame close to the outer door handle.

[0023] By adopting the above technical solution, the specific setting of the lifting frame enables the user to hold the outer door handle outside the door, and when the outer door handle is rotated, the outer door handle can drive the driving frame to rotate together, so that the height of the driving frame connected to the middle rope is changed, so that the driving frame drives the top end of the middle rope to move upward, so that the middle rope pulls the hook frame to move upward, so that the hook frame drives one end of the driving frame to move, and then realizes the driving of the driving frame to rotate, which effectively facilitates the user to drive the driving frame; at the same time, the specific setting of the lifting frame can effectively increase the vertical distance between the outer door handle and the driving frame, so that relevant personnel can change the height of the outer door handle by changing the length of the middle rope, effectively reducing the probability of children accidentally opening the door lock of this application through the outer door handle.

[0024] Preferably, the driving frame is further provided with an elastic member, and the elastic member is used for resetting the driving frame through its own elastic force.

[0025] By adopting the above technical solution, the elastic member is set so that the elastic member can drive the driving frame to reset through its own elastic force, so that after the user releases the outer door handle or pushes the frame, the driving frame can automatically return to the initial position, thereby causing the upper locking frame and the lower locking frame to return to their initial positions, effectively facilitating the user's next use.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The arrangement of the driving frame, the outer door handle and the lifting frame enables the outer door handle to be arranged above the driving frame, and enables the outer door handle to move by driving the lifting frame, thereby driving the driving frame to rotate. It is not necessary to arrange the outer door handle at the same height as the inner door switch, so that the outer door handle can drive the driving frame to rotate, thereby effectively increasing the setting height of the outer door handle, effectively reducing the probability of children touching the outer door handle outside the door, thereby reducing the probability of children opening the door lock through the outer door handle; 2. The specific arrangement of the lock frame and the driving assembly enables the two ends of the driving frame to simultaneously drive one end of the upper connecting frame and the lower connecting frame to move in opposite directions, thereby realizing the linkage between the upper locking frame and the lower locking frame, so that the upper locking frame and the lower locking frame can be inserted into the door frame or the wall under the drive of the driving assembly, thereby realizing locking of both the upper and lower sides of the door body, effectively increasing the locking effect of the door lock of the present application on the door body, and facilitating the user to unlock and drive the upper unlocking frame and the lower unlocking frame; 3. The specific setting of the lifting frame enables the outer door handle to rotate, and the outer door handle can drive the top end of the middle rope to move upward through the driving frame, so that the middle rope pulls the hook frame to move upward, thereby causing the hook frame to drive one end of the driving frame to move, thereby driving the driving frame to rotate. At the same time, it also enables relevant personnel to change the height of the outer door handle by changing the length of the middle rope, effectively reducing the chance of children accidentally opening the door lock of this application through the outer door handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram for reflecting the overall height difference between the inside and outside of the emergency escape fire lock in the embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the structure of the external door handle in the embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the structure of the driving component in the embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the structure of the driving frame in the embodiment of the present application.

[0031] Figure 5 It is a schematic diagram of the structure of the switch element in the embodiment of the present application.

[0032] Figure 6 It is a schematic diagram of the structure of the retaining component in the embodiment of the present application.

[0033] Figure 7 It is a structural schematic diagram used to reflect the reinforcement component in the embodiment of the present application.

[0034] Description of the accompanying drawings: 1. mounting frame; 2. locking mechanism; 21. locking frame; 211. upper locking frame; 2111. retaining groove; 2112. reinforcement groove; 212. lower locking frame; 22. driving frame; 23. driving assembly; 231. upper connecting frame; 232. lower connecting frame; 24. elastic member; 3. outer door handle; 31. sleeve frame; 32. protruding frame; 4. inner door switch; 41. fixing frame; 42. pushing frame; 43. switch member; 4 31. Intermediate frame; 44. Switch frame; 5. Lifting frame; 51. Driving frame; 52. Intermediate rope; 53. Hook frame; 6. Reset assembly; 61. Reset frame; 62. Reset torsion spring; 7. Fixing mechanism; 71. Additional frame; 72. Retention assembly; 721. Retention frame; 7211. Retention part; 7212. Unlocking part; 722. Reset piece; 73. Reinforcement assembly; 731. Reinforcement frame; 732. Reset spring; 733. Limiting frame. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] The present application embodiment discloses an emergency escape fireproof lock with a height difference between the inside and outside. Figure 1 , Figure 2 and Figure 3 The internal and external height difference emergency escape fire lock includes a mounting frame 1, a locking mechanism 2, an external door handle 3 and an internal door switch 4. The locking mechanism 2 includes a lock frame 21, a drive frame 22 and a drive assembly 23. The mounting frame 1 is fixedly installed in the door body by bolts, the drive frame 22 is rotatably connected with the mounting frame 1, and the drive frame 22 drives the lock frame 21 to slide through the drive assembly 23. The external door handle 3 is located above the drive frame 22 and is provided with a lifting frame 5. The bottom end of the lifting frame 5 extends downward and is connected to the drive frame 22. The external door handle 3 drives the drive frame 22 to rotate by controlling the movement of the lifting frame 5.

[0037] Reference Figure 3 and Figure 4 The middle part of the driving frame 22 along its length direction is rotatably connected to the mounting frame 1 through a pin shaft, and the end of the driving frame 22 close to the outer door handle 3 is arranged to be tilted downward. The driving frame 22 is also provided with an elastic member 24. In the embodiment of the present application, the elastic member 24 is configured as a tension spring, one end of which is sleeved on the end of the driving frame 22 close to the outer door handle 3, and the other end is sleeved on the mounting frame 1, so that the driving frame 22 is reset by its own elastic force.

[0038] Reference Figure 3 The driving assembly 23 includes an upper connecting frame 231 and a lower connecting frame 232, and the locking frame 21 includes an upper locking frame 211 and a lower locking frame 212. In the embodiment of the present application, two upper connecting frames 231 and two lower connecting frames 232 are provided, and are respectively located on opposite sides of the driving frame 22.

[0039] Reference Figure 3 The bottom end of each upper connecting frame 231 is rotatably connected to the end of the driving frame 22 away from the outer door handle 3 through a pin shaft, and the top end of each upper connecting frame 231 is rotatably connected to the bottom end of the upper locking frame 211 through a pin shaft. The top end of each lower connecting frame 232 is rotatably connected to the end of the driving frame 22 close to the outer door handle 3 through a pin shaft, and the bottom end of each lower connecting frame 232 is rotatably connected to the top end of the lower locking frame 212 through a pin shaft.

[0040] Reference Figure 2 and Figure 3The upper locking frame 211 and the lower locking frame 212 are both slidably connected to the mounting frame 1, and the sliding directions of the upper locking frame 211 and the lower locking frame 212 are both vertical. The top end of the upper locking frame 211 extends upward out of the door body and is inserted into the door frame or the wall, and the bottom end of the lower locking frame 212 extends downward out of the door body and is inserted into the door frame or the wall, thereby locking the door body.

[0041] Reference Figure 3 and Figure 4 In the initial state, the end of the driving frame 22 close to the outer door handle 3 is tilted downward, at which time the elastic member 24 is in a stretched state, and the upper locking frame 211 and the lower locking frame 212 are both inserted into the door frame or wall. When the driving frame 22 rotates, and the end of the driving frame 22 close to the outer door handle 3 rotates upward, the driving frame 22 drives the upper connecting frame 231 and the lower connecting frame 232 to slide, so that the upper connecting frame 231 drives the upper locking frame 211 to slide downward, and the lower connecting frame 232 drives the lower locking frame 212 to slide upward, and in this process, the elastic member 24 is stretched. Finally, the upper locking frame 211 and the lower locking frame 212 are both separated from the door frame or wall, so that the door lock is in an unlocked state, so that the user can open the door body installed with the door lock of the present application.

[0042] Reference Figure 3 and Figure 4 The frame part of the outer door handle 3 is fixedly installed on the outer side of the door body by bolts. The outer door handle 3 is also provided with a sleeve frame 31, which is located in the door body and is fixedly sleeved on the handle part of the outer door handle 3, so that the user can drive the sleeve frame 31 to rotate by rotating the handle part. A protruding frame 32 is also provided on the top of the sleeve frame 31, and the protruding frame 32 is fixedly installed on the sleeve frame 31.

[0043] Reference Figure 3 and Figure 4 The lifting frame 5 includes a driving frame 51, an intermediate rope 52 and a hook frame 53. One end of the driving frame 51 passes through the protruding frame 32 and is fixedly connected to the protruding frame 32. The other end of the driving frame 51 is bent to one side and extends below the rotation axis of the handle portion of the outer door handle 3.

[0044] Reference Figure 4 The top of the middle rope 52 is fixedly connected to the bottom of the driving frame 51, and the bottom of the middle rope 52 is extended downward and fixedly connected to one end of the hook frame 53. The other end of the hook frame 53 is extended upward and surrounds the end of the driving frame 22 close to the outer door handle 3, so as to achieve the sleeve of the driving frame 22, so that the hook frame 53 can drive the driving frame 22 to rotate. The setting of the middle rope 52 enables relevant personnel to adjust the height of the outer door handle 3 when it is installed by controlling the length of the middle rope 52, so as to meet the needs of different occasions.

[0045] Reference Figure 3 and Figure 4 In the initial state, that is, when the end of the driving frame 22 close to the outer door handle 3 is tilted downward, the protruding frame 32 is at the top of the sleeve frame 31, and the middle rope 52 is in a straightened state. When the user turns the handle portion of the outer door handle 3, the handle portion of the outer door handle 3 drives the sleeve frame 31 to rotate together, so that the bottom end of the driving frame 51 is displaced and one end of the middle rope 52 is pulled upward, so that the middle rope 52 passes through the hook frame 53, driving the end of the driving frame 22 close to the outer door handle 3 to rotate upward, thereby driving the driving frame 22.

[0046] Reference Figure 2 and Figure 5 The inner door switch 4 includes a fixing frame 41, a pushing frame 42, a switch member 43 and a switch frame 44. The fixing frame 41 is fixedly mounted on the side wall of the inner side of the door body by bolts. The fixing frame 41 is arranged at one end opening away from the door body, one end of the pushing frame 42 extends into the opening of the fixing frame 41 and is slidably connected with the fixing frame 41, and the sliding direction of the pushing frame 42 is the width direction (i.e., the opening direction) of the pushing frame 42, so that the user can push the pushing frame 42 conveniently, and after pushing, most of the pushing frame 42 is located in the opening on the fixing frame 41.

[0047] Reference Figure 5 The switch member 43 includes an intermediate frame 431, which is located in the opening of the fixed frame 41. The middle of the intermediate frame 431 is rotatably connected to the fixed frame 41 through a pin. One end of the intermediate frame 431 extends toward the direction close to the push frame 42 and abuts against the inner side wall of the push frame 42. The other end of the intermediate frame 431 extends toward the direction close to the switch frame 44 and extends to the side of the switch frame 44 close to the driving frame 22.

[0048] Reference Figure 3 and Figure 5 , the switch frame 44 is located on the side of the drive frame 22 away from the outer door handle 3, the switch frame 44 is rotatably connected to the mounting frame 1, and the rotation axis of the switch frame 44 is parallel to the rotation axis of the drive frame 22. The bottom end of the switch frame 44 is extended downward and abuts against the end of the intermediate frame 431. The top end of the switch frame 44 is extended in the direction close to the drive frame 22, and the bottom of this end abuts against the top of the end of the drive frame 22 away from the outer door handle 3. In the embodiment of the present application, a recessed groove is also provided at the bottom of the switch frame 44 close to the end of the drive frame 22, so that the switch frame 44 and the drive frame 22 can fully abut against each other.

[0049] Reference Figure 3 and Figure 5In the initial state, that is, when the end of the driving frame 22 away from the outer door handle 3 is tilted upward, the upper locking frame 211 and the lower locking frame 212 are both inserted into the door frame or the wall, and the pushing frame 42 is located at the end of its own sliding path away from the door body. When the user pushes the pushing frame 42 to slide into the fixed frame 41, the inner side wall of the pushing frame 42 continues to abut against the end of the intermediate frame 431, so that the intermediate frame 431 rotates, so that the other end of the intermediate frame 431 continuously pushes the bottom end of the switch frame 44 to rotate away from the driving frame 22 through abutment, and then the top end of the switch frame 44 pushes the end of the driving frame 22 away from the outer door handle 3 to rotate downward, thereby driving the driving frame 22.

[0050] Reference Figure 5 A reset assembly 6 is also disposed in the opening of the fixing frame 41. In the embodiment of the present application, the number of the reset assemblies 6 is set to two, and the two reset assemblies 6 are distributed along the length direction of the fixing frame 41. Each reset assembly 6 includes a reset frame 61 and a reset torsion spring 62, and each reset frame 61 is rotatably connected to the fixing frame 41 through a pin shaft.

[0051] Reference Figure 5 One end of each reset frame 61 extends toward the direction close to the push frame 42 and abuts against the inner wall of the push frame 42. Each reset torsion spring 62 is sleeved on the corresponding reset frame 61, and one end abuts against the corresponding reset frame 61, and the other end abuts against the inner wall of the fixed frame 41 to achieve the reset of the reset frame 61, thereby achieving the reset of the push frame 42 by resetting the reset frame 61.

[0052] Reference Figure 6 and Figure 7 The top of the upper locking frame 211 is also provided with a retaining groove 2111 and a reinforcing groove 2112. The retaining groove 2111 is an annular groove, and a guide surface is provided on the inner top wall and the inner bottom wall of the retaining groove 2111. In the embodiment of the present application, the number of the reinforcing grooves 2112 is set to two, and they are respectively located on the opposite sides of the upper locking frame 211, and a guide surface is provided on the inner top wall and the inner bottom wall of each reinforcing groove 2112.

[0053] Reference Figure 2 , Figure 6 and Figure 7 The upper locking frame 211 is also provided with a fixing mechanism 7, which includes an additional frame 71, a retaining assembly 72 and a reinforcing assembly 73. The additional frame 71 is fixed to the door body by bolts. The top of the upper locking frame 211 passes through the additional frame 71 upwards and is slidably connected to the additional frame 71. The sliding direction of the upper locking frame 211 relative to the additional frame 71 is the vertical direction.

[0054] Reference Figure 6The retaining assembly 72 includes a retaining frame 721 and a reset member 722. The retaining frame 721 is located in the additional frame 71, and the bottom end of the retaining frame 721 is rotatably connected to the additional frame 71 through a pin shaft, and the top end of the upper locking frame 211 passes through the retaining frame 721. A retaining portion 7211 is further extended from the retaining frame 721, and the retaining portion 7211 is obliquely extended upward in a direction close to the upper locking frame 211, and abuts against the side wall of the upper locking frame 211, and is located below the retaining groove 2111.

[0055] Reference Figure 2 and Figure 6 The top of the retaining frame 721 is on the side away from the outer door handle 3, and an unlocking portion 7212 is extended in a direction away from the outer door handle 3, and the unlocking portion 7212 extends outward to the door body. In the embodiment of the present application, the reset member 722 is configured as a torsion spring, which is sleeved on the retaining frame 721, and the middle part of the torsion spring abuts against the retaining frame 721, and the two ends abut against the additional frame 71, so as to realize the reset of the retaining frame 721.

[0056] Reference Figure 6 In the initial state, that is, when the upper locking frame 211 is inserted into the door frame or the wall, the retaining frame 721 is located below the retaining groove 2111, and the reset member 722 is in a torsion deformation state. When the upper locking frame 211 slides downward and completely detaches from the door frame or the wall, the retaining groove 2111 corresponds to the retaining portion 7211 on the retaining frame 721, and the retaining frame 721 rotates under the elastic force of the reset member 722, so that the retaining portion 7211 is inserted into the retaining groove 2111 and abuts against the inner bottom wall of the retaining groove 2111, thereby preventing the upper locking frame 211 from sliding upward, so that the upper locking frame 211 remains in an unlocked state, and the driving frame 22 and the lower locking frame 212 also remain in an unlocked state.

[0057] Reference Figure 6 When it is necessary to restore the upper locking frame 211 to its initial state, the unlocking portion 7212 is pushed to rotate the retaining frame 721, thereby disengaging the retaining portion 7211 from the retaining groove 2111, thereby releasing the unlocking of the upper locking frame 211. At this time, the upper locking frame 211 is driven by the driving frame 22 to return to its initial position.

[0058] Reference Figure 7In the embodiment of the present application, the number of the reinforcement components 73 is set to two, and they correspond to the reinforcement grooves 2112 one by one. Each reinforcement component 73 includes a reinforcement frame 731, a reset spring 732 and a limit frame 733. The bottom end of each reset spring 732 is attached to the bottom end of the corresponding limit frame 733, and they are fixedly connected to the additional frame 71 by the same bolt. The top ends of each reset spring 732 and the limit frame 733 are extended upward, and the top ends of the limit frames 733 are higher than the top ends of the reset spring 732 to limit the reset spring 732.

[0059] Reference Figure 7 The top end of each reset spring sheet 732 is sleeved on one end of the corresponding reinforcement frame 731, and the other end of each reinforcement frame 731 extends toward the direction close to the corresponding reinforcement groove 2112, and passes through the additional frame 71, and is slidably connected to the additional frame 71, and extends into the corresponding reinforcement groove 2112, thereby hindering the downward displacement of the upper locking frame 211.

[0060] The implementation principle of the emergency escape fire lock with an internal and external height difference in the embodiment of the present application is as follows: when it is necessary to open the door body outside the door, the handle part of the external door handle 3 is rotated. At this time, the handle part of the external door handle 3 drives the sleeve frame 31 to rotate together, so that the bottom end of the driving frame 51 is displaced, and one end of the middle rope 52 is pulled upward, so that the middle rope 52 passes through the hook frame 53, and drives the end of the driving frame 22 close to the external door handle 3 to rotate upward, so as to drive the driving frame 22. At this time, the driving frame 22 drives the upper locking frame 211 and the lower locking frame 212 to slide toward each other through the upper connecting frame 231 and the lower connecting frame 232, so that the upper locking frame 211 and the lower locking frame 212 are separated from the door frame or the wall, so as to unlock the door body installed with the door lock of the present application.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An emergency escape fireproof lock with an internal and external height difference, comprising a mounting frame (1), a locking mechanism (2), an external door handle (3) and an internal door switch (4), wherein the locking mechanism (2) comprises a lock frame (21), characterized in that: The locking mechanism (2) also includes a driving frame (22) and a driving assembly (23), wherein the driving frame (22) is rotatably connected to the mounting frame (1), and the driving frame (22) drives the lock frame (21) to slide through the driving assembly (23). The outer door handle (3) is located above the driving frame (22) and is provided with a lifting frame (5), wherein the bottom end of the lifting frame (5) extends downward and is connected to the driving frame (22), and the outer door handle (3) drives the driving frame (22) to rotate by controlling the movement of the lifting frame (5).

2. The fireproof lock with a height difference between inside and outside according to claim 1, characterized in that: The lock frame (21) comprises an upper locking frame (211) and a lower locking frame (212), and the upper locking frame (211) and the lower locking frame (212) are both slidably connected to the mounting frame (1); the top end of the upper locking frame (211) extends upward and is used to be inserted into a door frame or a wall; the bottom end of the lower locking frame (212) extends downward and is used to be inserted into a door frame or a wall; and the driving component (23) is used to drive the upper locking frame (211) and the lower locking frame (212) to slide in opposite directions together.

3. The fireproof lock for emergency escape with a height difference between inside and outside according to claim 2, characterized in that: A retaining groove (2111) is provided on the side wall of the upper locking frame (211), and a fixing mechanism (7) is also provided on the top of the upper locking frame (211), wherein the fixing mechanism (7) comprises an additional frame (71) and a retaining assembly (72), wherein the additional frame (71) is used for being installed on the door body, and the retaining assembly (72) comprises a retaining frame (721) and a reset member (722), wherein one end of the retaining frame (721) is rotatably connected to the additional frame (71), and a retaining portion (7211) is provided on the retaining frame (721), wherein the retaining portion (7211) is used for being inserted into the retaining groove (2111), and the reset member (722) is used for resetting the retaining frame (721).

4. The fireproof lock for emergency escape with a height difference between inside and outside according to claim 3, characterized in that: A reinforcement groove (2112) is provided on the side wall of the upper locking frame (211); the fixing mechanism (7) further comprises a reinforcement assembly (73); the reinforcement assembly (73) comprises a reinforcement frame (731) and a reset spring sheet (732); one end of the reset spring sheet (732) is connected to the additional frame (71), and the other end is connected to one end of the reinforcement frame (731); the other end of the reinforcement frame (731) is inserted into the reinforcement groove (2112).

5. The fireproof lock for emergency escape with a height difference between inside and outside according to claim 2, characterized in that: The driving assembly (23) comprises an upper connecting frame (231) and a lower connecting frame (232); one end of the upper connecting frame (231) is rotatably connected to one end of the driving frame (22), and the other end is rotatably connected to the bottom end of the upper locking frame (211); one end of the lower connecting frame (232) is rotatably connected to the other end of the driving frame (22), and the other end is rotatably connected to the top end of the lower locking frame (212); and the middle part of the driving frame (22) is rotatably connected to the mounting frame (1).

6. The fireproof lock for emergency escape with a height difference between inside and outside according to claim 1, characterized in that: The inner door switch (4) comprises a fixed frame (41), a pushing frame (42), a switch member (43) and a switch frame (44); the fixed frame (41) is used to be installed on the inner side of the door body; the pushing frame (42) is slidably connected to the fixed frame (41), and one end of the pushing frame (42) extends out of the fixed frame (41); the switch frame (44) is rotatably connected to the mounting frame (1); one end of the switch frame (44) abuts against one end of the driving frame (22); the pushing frame (42 drives the switch frame (44) to rotate through the switch member (43), and drives the driving frame (22) to rotate by abutting.

7. The fireproof lock for emergency escape with a height difference between inside and outside according to claim 6, characterized in that: The switch member (43) comprises an intermediate frame (431), wherein the intermediate frame (431) is located between the fixed frame (41) and the pushing frame (42) and rotates with the fixed frame (41), one end of the intermediate frame (431) abuts against the pushing frame (42), and the other end of the intermediate frame (431) extends to a side of the switch frame (44) close to the driving frame (22) and abuts against an end of the switch frame (44) away from the driving frame (22).

8. The fireproof lock for emergency escape with a height difference between inside and outside according to claim 6, characterized in that: The fixed frame (41) is also provided with a reset assembly (6), the reset assembly (6) comprising a reset frame (61) and a reset torsion spring (62), the reset frame (61) is located between the fixed frame (41) and the pushing frame (42), and is rotatably connected to the fixed frame (41), one end of the reset frame (61) is against the pushing frame (42), and the reset torsion spring (62) is used for resetting the reset frame (61).

9. The fireproof lock for emergency escape with a height difference between inside and outside according to claim 1, characterized in that: The lifting frame (5) includes a driving frame (51), an intermediate rope (52) and a hook frame (53). One end of the driving frame (51) is installed on the outer door handle (3), and the other end of the driving frame (51) extends to below the rotation axis of the outer door handle (3). One end of the intermediate rope (52) is connected to the bottom end of the driving frame (51), and the other end extends downward and is connected to the hook frame (53). The hook frame (53) is sleeved on one end of the driving frame (22) close to the outer door handle (3).

10. The fireproof lock for emergency escape with a height difference between inside and outside according to claim 1, characterized in that: The drive frame (22) is also provided with an elastic member (24), and the elastic member (24) is used to reset the drive frame (22) through its own elastic force.

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