Emergency car door opening mechanism

Abstract

The invention relates to an emergency car door opening mechanism, which belongs to the car door emergency opening technology and comprises a U-shaped mounting frame arranged on a car B column, a bidirectional folding frame is fixedly arranged in the mounting frame, two separable splicing type hooks are longitudinally mounted in the bidirectional folding frame, and two folding springs are further arranged in the bidirectional folding frame. The two folding springs are connected with the upper separable splicing type hook and the lower separable splicing type hook respectively, the two separable splicing type hooks are kept in a combined state in a normal state and used for being matched with a car door lock cylinder to conduct locking control, and each separable splicing type hook is composed of a sliding installation plate and an L-shaped connecting rod which are arranged in the two-way folding frame in a sliding mode. The L-shaped connecting rod is fixedly arranged on the sliding mounting plate, the upper separable splicing type hook and the lower separable splicing type hook are spliced in an L-shaped mode to form a U-shaped buckle used for buckling a car door lock cylinder, the car door lock can be rapidly unlocked, forced opening is facilitated when a car door deforms, the car door can be conveniently and additionally arranged on a car in the later period, and the applicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle door emergency opening, in particular to an emergency vehicle door opening mechanism. Background Art

[0002] As an indispensable means of transportation in modern society, cars not only greatly facilitate people's travel, but also play a vital role in promoting national economic development and social progress. When a vehicle is in a traffic accident and the vehicle loses power, it may cause safety hazards. When the vehicle loses power, the side door locks may not work properly due to power outages, making it difficult to open the door, which not only increases the difficulty for passengers to escape in an emergency, but also may delay the rescue time of rescuers.

[0003] To address this problem, a Chinese invention patent with publication number CN111852214A discloses a door lock structure with an emergency opening function and a method of using the door lock structure, including a transmission mechanism, the transmission mechanism including an inner opening handle and a first opening rocker arm, a first unlocking rocker arm and a second unlocking rocker arm, all of which are arranged on the housing of the door lock; the inner opening handle is connected to the first opening rocker arm through an inner opening pull wire, the first end of the first opening rocker arm abuts against the first end of the first unlocking rocker arm, and the second end of the first unlocking rocker arm is rotatably connected to the first end of the second unlocking rocker arm; an opening mechanism, the opening mechanism including a second opening rocker arm and a limit block coaxially connected to the housing, the second opening rocker arm abuts against the second end of the first opening rocker arm, the limit block abuts against the lock tongue of the door lock, and the lock tongue is rotatably arranged on the housing; an unlocking stop mechanism, the unlocking stop mechanism including an unlocking rod, the two ends of the unlocking rod are respectively slidably connected to the second unlocking rocker arm and the second opening rocker arm.

[0004] In the above-mentioned disclosed technical scheme, the opening action is performed through the inner opening handle and the inner opening pull wire linkage opening mechanism, so that the first opening rocker arm is moved through the unlocking rod, the protrusion and the card block linkage limit block until the lock tongue is reset, thereby realizing the opening of the vehicle door lock. However, its unlocking method is mainly through pulling the inner opening handle, and the inner opening handle needs to be set on the vehicle door, which is directly exposed to the outside and has a certain protrusion, and there is a risk of accidental touch. In addition, the improvement of the vehicle door is relatively large, and it is difficult to perform secondary installation after leaving the factory according to actual needs. It can only be assembled when the vehicle is produced. In view of this, the present application is proposed. Summary of the invention

[0005] In order to overcome the technical defects of the prior art, the present invention provides an emergency door opening mechanism, which is simple and quick to operate, convenient for later installation, and convenient for opening when the door is deformed.

[0006] The technical solution adopted by the present invention is: comprising a U-shaped mounting frame placed on the B-pillar of the automobile, wherein a two-way folding frame is fixedly arranged in the mounting frame, wherein two detachable splicing hooks are longitudinally installed in the two-way folding frame, wherein two folding springs are further arranged inside the two-way folding frame, wherein the two folding springs are respectively connected to the upper and lower detachable splicing hooks, and under normal conditions, the two detachable splicing hooks are kept in a combined state under the pulling of the folding springs, and are used to cooperate with the door lock cylinder for locking control, and the two detachable splicing hooks can form a traditional U-shaped structure after being combined; The detachable splicing hook is composed of a sliding mounting plate and an L-shaped connecting rod slidably arranged in a two-way retracting frame. The L-shaped connecting rod is fixedly arranged on the sliding mounting plate. The upper and lower L-shaped connecting rods of the detachable splicing hook are spliced ​​to form a U-shaped buckle for buckling the door lock cylinder. The splicing hook structure design makes it unnecessary to control the door lock when the vehicle encounters an unexpected situation and needs to open the door. It only needs to control the separation of the two L-shaped connecting rods to realize the separation of the detachable splicing hook and the lock cylinder, thereby realizing rapid unlocking. Two first guide wheels which are respectively located at the upper and lower positions of the two-way folding frame are arranged in the mounting frame, a second guide wheel is rotatably installed at the center position of the inner wall of the mounting frame, a guide wire is fixed on the side wall of the sliding mounting plate, the guide wire is fixedly connected to the second guide wheel after passing around the first guide wheel, a rotating pull member for controlling the rotation of the second guide wheel is rotatably installed in the mounting frame, when the structure of the present invention is actually applied, when the vehicle door needs to be opened urgently, it is only necessary to buckle the rotating pull member out of the mounting frame, and then rotate the rotating pull member to drive the second guide wheel to rotate, and then reel in the wire, so that the other end of the wire can pull the sliding mounting plate, thereby separating the two L-shaped connecting rods, and then making the lock core of the vehicle door free from the restriction, and the vehicle door can be opened quickly at this time.

[0007] Preferably, the two-way folding frame is composed of two limit bars respectively arranged on both sides of the inner wall of the mounting frame and a connecting middle column for connecting the two limit bars. One end of the folding spring is fixed on the connecting middle column, and the other end is connected to the sliding mounting plate. The two-way folding frame is an H-shaped structure as a whole. The limit bars on both sides provide sliding space for the sliding mounting plate. The folding spring is in the middle position and can exert a relatively stable pulling force on the sliding mounting plate, so that the L-shaped connecting rods on the two sliding mounting plates remain in a combined state.

[0008] Preferably, sliding grooves are provided on the side walls facing each other of the two limit strips, and strip-shaped protrusions that can slide into the sliding grooves are provided on both side walls of the sliding mounting plate, so that a relatively stable connection structure is provided between the sliding mounting plate and the limit strip without shaking, thereby ensuring the docking accuracy and stability of the two L-shaped connecting rods.

[0009] Preferably, the rotating pull member includes a strip handle and a telescopic sleeve rod fixedly arranged on the strip handle, the telescopic sleeve rod passes through the mounting frame and is connected to the second guide wheel, the telescopic sleeve rod adopts a telescopic rod in which the inner and outer rods cannot rotate relative to each other, and after the telescopic sleeve rod is extended, the strip handle can be separated from the strip storage groove of the mounting frame, and then the rotation of the strip handle can drive the telescopic sleeve rod to rotate as a whole, and then drive the second guide wheel to rotate, so that the second guide wheel simultaneously reels up the upper and lower steel wires, and then pulls the upper and lower sliding mounting plates together with the L-shaped connecting rod, so that the two L-shaped connecting rods are separated, realizing the function of quickly unlocking and opening the car door.

[0010] Preferably, buckle grooves are provided on one side of the top and bottom of the strip handle, which are used for buckling the strip handle together with the retractable sleeve rod out of the mounting frame with both hands, making it easy to manually remove the strip handle from the mounting frame. When not in use, the strip handle is placed in the strip storage groove of the mounting frame without a raised part, which is aesthetically pleasing and prevents accidental touch, thereby increasing safety.

[0011] Preferably, side grooves are provided on both sides of the strip handle, and rotating handles are rotatably installed in the side grooves. The two rotating handles can be adsorbed and connected after being turned horizontally. A blocking plate is provided at the middle position of the side groove to limit the rotation angle of the rotating handle within 90 degrees. The two rotating handles can also be rotated out when in use to form a cross structure with the strip handle, which is more convenient for rotating operations in narrow spaces inside the vehicle.

[0012] Preferably, a strip storage groove for inserting a strip handle is provided on the outer side wall of the mounting frame, a circular through hole is provided in the strip storage groove for passing a retractable sleeve rod, and a lock core entry groove for the door lock core to enter the lock core connected to the detachable splicing hook is provided on one side of the mounting frame.

[0013] Preferably, a strip slide groove is provided on the inner wall of the mounting frame, a trapezoidal slider is slidably arranged in the strip slide groove, a sliding clamping strip for engaging with the strip slide groove is provided on the side wall of the trapezoidal slider, and the side wall of the trapezoidal slider is fixedly connected to the detachable splicing hook through an outward push connecting rod, and when the two detachable splicing hooks move, the trapezoidal slider can be carried to move synchronously by the outward push connecting rod.

[0014] Preferably, the inner side wall of the mounting frame is also provided with an elastic push rod which can be pushed out to the outside of the mounting frame by the trapezoidal slider, and the mounting frame is provided with a square groove for the elastic push rod to pass through. When the vehicle door encounters an unexpected situation and needs to be opened manually, the unlocking can be achieved by rotating the rotating pull piece. On this basis, if the vehicle door is deformed, even if the lock cylinder is separated from the detachable splicing hook, it may still not be opened. At this time, it is only necessary to continuously control the rotation of the rotating pull piece and continuously pull the sliding mounting plate outward, so that the trapezoidal slider can be pushed toward each elastic push rod through the outward push connecting rod, so that the trapezoidal slider pushes each elastic push rod to the outside of the mounting frame, thereby ejecting the vehicle door attached to the outside of the mounting frame.

[0015] Preferably, the elastic push rod consists of a movable rod that can pass through the square slot, an extension piece fixedly arranged on one side of the movable rod, and an elastic push rod fixed on the inner wall of the mounting frame. The telescopic end of the elastic push rod is fixedly connected to the extension piece. Under normal circumstances, the elastic push rod pushes out the extension piece and the movable rod so that the movable rod is inside the mounting frame. A conical push block is provided at one end of the movable rod facing the square slot. Under the control of the elastic push rod, when the trapezoidal slider does not apply pressure to the elastic push rod, the elastic push rod pushes the movable rod into the mounting frame and will not be exposed to the outside. When pushed by the trapezoidal slider, the elastic push rod is compressed, and the movable rod can push the conical push block outward, thereby pushing out the car door that is attached to the outer wall of the mounting frame.

[0016] The beneficial effects of the present invention are: 1. The present invention forms a traditional U-shaped structure by combining two detachable splicing hooks. There is no need to modify the existing door lock structure. The mounting frame of the present application only needs to be fixed to the existing B-pillar of the vehicle body by screws. The modification to the vehicle is extremely small and the applicability is strong.

[0017] 2. The hook of the present invention used for connecting with the door lock core adopts a spliced ​​hook design, so that when the vehicle encounters an unexpected situation and needs to open the door, there is no need to control the door lock. It only needs to control the separation of the two L-shaped connecting rods to achieve the separation of the detachable spliced ​​hook and the lock core, thereby achieving rapid unlocking.

[0018] 3. When the vehicle door needs to be opened urgently, the present invention only needs to buckle the rotating pull piece out of the mounting frame, and then rotate the rotating pull piece to drive the second guide wheel to rotate, thereby winding the steel wire, so that the other end of the steel wire can pull the sliding mounting plate, thereby separating the two L-shaped connecting rods, and then releasing the lock core of the vehicle door from the restriction. At this time, the vehicle door can be opened quickly. The operation is simple and quick, and the rotating pull piece is placed in the mounting frame when not in use, without the risk of accidental touch. It has high aesthetics and high safety.

[0019] 4. In the case that the vehicle door is deformed and cannot be opened, the present invention only needs to continuously control the rotation of the rotating pull member and continuously pull the sliding mounting plate outward, so that the trapezoidal sliding block can be pushed toward each elastic push rod through the outward pushing connecting rod, so that the trapezoidal sliding block pushes each elastic push rod toward the outside of the mounting frame, thereby pushing out the vehicle door attached to the outside of the mounting frame. This not only facilitates the rapid opening of the vehicle door lock, but also can push the vehicle door outward when the vehicle door is deformed, further improving the probability of escape. The operating ends for unlocking and forcibly opening the vehicle door are the same, and no complicated operations are required, which greatly reduces the difficulty of escape for the user and has great practical application significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic structural diagram of the present invention from a rear side perspective.

[0022] Figure 3 It is a structural schematic diagram of the installation frame in the present invention.

[0023] Figure 4 It is a structural schematic diagram of the installation frame of the present invention from the rear side perspective.

[0024] Figure 5 It is the right side view of the present invention.

[0025] Figure 6 It is a schematic diagram of the connection structure of the two-way folding frame, the detachable splicing hook and the rotating pull member in the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the rotating pull member in the present invention.

[0027] Figure 8 It is a schematic diagram of the connection structure of the detachable splicing hook and the trapezoidal sliding block in the present invention.

[0028] Fig. 9 It is a schematic diagram of the structure of the elastic push rod in the present invention.

[0029] Explanation of reference numerals: In the figure: 1, mounting frame; 101, strip storage groove; 102, circular through hole; 103, square through groove; 104, lock core entry groove; 105, strip slide groove; 2, two-way folding frame; 201, limit strip; 202, connecting center column; 203, slide groove; 3, folding spring; 4, detachable splicing hook; 401, sliding mounting plate; 402, L-shaped connecting rod; 403, guide Steel wire; 5. First guide wheel; 6. Second guide wheel; 7. Rotating pull piece; 701. Bar handle; 702. Retractable sleeve rod; 703. Buckle groove; 704. Side slot; 705. Rotating handle; 8. Outward push rod; 9. Trapezoidal slider; 901. Sliding card strip; 10. Elastic push rod; 1001. Movable rod; 1002. Conical top block; 1003. Extension piece; 1004. Elastic push rod. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings: like Figure 1-Figure 9 shown.

[0031] Example 1

[0032] The present embodiment provides an emergency door opening mechanism, comprising a U-shaped mounting frame 1 placed on the B-pillar of a car, a two-way retracting frame 2 fixedly arranged in the mounting frame 1, two detachable splicing hooks 4 longitudinally arranged in the two-way retracting frame 2, two retracting springs 3 arranged inside the two-way retracting frame 2, the two retracting springs 3 are respectively connected to the upper and lower detachable splicing hooks 4, under normal conditions, the two detachable splicing hooks 4 are kept in a combined state under the pull of the retracting springs 3, and are used to cooperate with the door lock cylinder for locking control, and the two detachable splicing hooks 4 can form a traditional U-shaped structure after being combined, without modifying the existing door lock structure, and only need to fix the mounting frame 1 of the present application on the existing vehicle body B-pillar by screws for use, and the modification range of the vehicle is extremely low, and the applicability is relatively strong; The detachable splicing hook 4 is composed of a sliding mounting plate 401 and an L-shaped connecting rod 402 which are slidably arranged in the two-way retracting frame 2. The L-shaped connecting rod 402 is fixedly arranged on the sliding mounting plate 401. The upper and lower L-shaped connecting rods 402 of the detachable splicing hook 4 are spliced ​​to form a U-shaped buckle for buckling the door lock cylinder. The splicing hook structure design makes it unnecessary to control the door lock when the vehicle encounters an unexpected situation and needs to open the door. It only needs to control the separation of the two L-shaped connecting rods 402 to realize the separation of the detachable splicing hook 4 and the lock cylinder, thereby realizing rapid unlocking. Two first guide wheels 5 are provided in the mounting frame 1, which are respectively located at the upper and lower positions of the two-way folding frame 2. A second guide wheel 6 is rotatably installed at the center position of the inner wall of the mounting frame 1. A guide wire 403 is fixed on the side wall of the sliding mounting plate 401. The guide wire 403 is fixedly connected to the second guide wheel 6 after passing around the first guide wheel 5. A rotating pull member 7 for controlling the rotation of the second guide wheel 6 is rotatably installed in the mounting frame 1. When the structure of the present invention is actually applied, when the car door needs to be opened urgently, it is only necessary to buckle the rotating pull member 7 from the mounting frame 1, and then rotate the rotating pull member 7 to drive the second guide wheel 6 to rotate, and then reel in the wire, so that the other end of the wire can pull the sliding mounting plate 401, thereby separating the two L-shaped connecting rods 402, and then making the lock core of the car door free from the restriction. At this time, the car door can be quickly opened, and the operation is simple and quick.

[0033] Specific as Figure 6 As shown, the two-way folding frame 2 is composed of two limit strips 201 respectively arranged on both sides of the inner wall of the mounting frame 1 and a connecting middle column 202 for connecting the two limit strips 201. One end of the folding spring 3 is fixed on the connecting middle column 202, and the other end is connected to the sliding mounting plate 401. The two-way folding frame 2 is an H-shaped structure as a whole. The limit strips 201 on both sides provide sliding space for the sliding mounting plate 401. The folding spring 3 is in the middle position and can exert a relatively stable pulling force on the sliding mounting plate 401, so that the L-shaped connecting rods 402 on the two sliding mounting plates 401 remain in a combined state. Sliding grooves 203 are provided on the side walls facing each other of the two limit strips 201, and strip-shaped protrusions that can slide into the sliding grooves 203 are provided on the two side walls of the sliding mounting plate 401, so that the sliding mounting plate 401 and the limit strip 201 have a relatively stable connection structure without shaking, thereby ensuring the docking accuracy and stability of the two L-shaped connecting rods 402.

[0034] Specific as Figure 7As shown, the rotating pull member 7 includes a strip handle 701 and a telescopic sleeve rod 702 fixedly arranged on the strip handle 701, the telescopic sleeve rod 702 passes through the mounting frame 1 and is connected to the second guide wheel 6, the telescopic sleeve rod 702 adopts a telescopic rod in which the inner and outer rods cannot rotate relative to each other, and after the telescopic sleeve rod 702 is extended, the strip handle 701 can be separated from the strip storage groove 101 of the mounting frame 1, and then the rotation of the strip handle 701 can drive the telescopic sleeve rod 702 to rotate as a whole, thereby driving the second guide wheel 6 to rotate, so that the second guide wheel 6 simultaneously reels up the upper and lower steel wires, and then pulls the upper and lower sliding mounting plates 401 together with the L-shaped connecting rod 402, so that the two L-shaped connecting rods 402 are separated, realizing the rapid door unlocking and opening function, and one side of the top and bottom of the strip handle 701 is provided with There is a buckle groove 703, which is used to buckle the strip handle 701 together with the retractable sleeve rod 702 from the mounting frame 1 with both hands, so as to facilitate manual removal of the strip handle 701 from the mounting frame 1. When not in use, the strip handle 701 is placed in the strip storage groove 101 of the mounting frame 1. It has no raised part, which is beautiful and prevents accidental touch, and has higher safety. Side slots 704 are provided on both sides of the strip handle 701. Rotating handles 705 are rotatably installed in the side slots 704. The two rotating handles 705 can be adsorbed and connected after being turned horizontally. A blocking plate is provided in the middle position of the side slots 704 to limit the rotation angle of the rotating handle 705 within 90 degrees. The two rotating handles 705 can also be rotated out when in use to form a cross structure with the strip handle 701, which is more convenient for rotation operation in a narrow space in the vehicle.

[0035] Specific as Figure 3 As shown, a strip receiving groove 101 for inserting the strip handle 701 is provided on the outer wall of the mounting frame 1, and a circular through hole 102 is provided in the strip receiving groove 101 for passing the retractable sleeve rod 702, and a lock cylinder entry groove 104 for the door lock cylinder to enter and be connected to the detachable splicing hook 4 is provided on one side of the mounting frame 1.

[0036] Example 2

[0037] This embodiment adds a structure for forcibly opening the door based on the embodiment 1, which is a structure for cooperating with the detachable splicing hook 4 separation structure. Figure 4 , Figure 5 as well as Figure 8 A strip slide groove 105 is provided on the inner wall of the mounting frame 1, a trapezoidal slider 9 is slidably arranged in the strip slide groove 105, a sliding card strip 901 for snapping into the strip slide groove 105 is provided on the side wall of the trapezoidal slider 9, and the side wall of the trapezoidal slider 9 is fixedly connected to the detachable splicing hook 4 through an outward push connecting rod 8. When the two detachable splicing hooks 4 move, the trapezoidal slider 9 can be carried to move synchronously through the outward push connecting rod 8.

[0038] Specific as Figure 5 and Figure 8 As shown, the inner side wall of the mounting frame 1 is also provided with an elastic push rod 10 which can be pushed out to the outside of the mounting frame 1 by the trapezoidal slider 9, and the mounting frame 1 is provided with a square through-groove 103 for the elastic push rod 10 to pass through. When the door needs to be opened manually in an unexpected situation, the door can be unlocked by rotating the rotating pull member 7. On this basis, if the door is deformed, even if the lock cylinder is separated from the detachable splicing hook 4, it may still not be opened. At this time, it is only necessary to continuously control the rotation of the rotating pull member 7 and continuously pull the sliding mounting plate 401 outward to unlock the door by pushing the connecting member outward. The rod 8 pushes the trapezoidal slider 9 toward each elastic push rod 10, so that the trapezoidal slider 9 pushes each elastic push rod 10 toward the outside of the mounting frame 1, thereby pushing out the door attached to the outside of the mounting frame 1. Compared with the existing emergency unlocking method of the door, the structure of the present invention is not only convenient for quickly opening the door lock, but also can push the door outward when the door is deformed, further improving the probability of escape, and the operating end for unlocking and forcibly opening the door is the same, without complicated operation, which greatly reduces the difficulty of escape for the user and has great practical application significance.

[0039] Specific as Fig. 9 As shown, the elastic push rod 10 is composed of a movable rod 1001 that can pass through the square through slot 103, an extension piece 1003 fixedly arranged on one side of the movable rod 1001, and an elastic push rod 1004 fixed on the inner wall of the mounting frame 1. The telescopic end of the elastic push rod 1004 is fixedly connected to the extension piece 1003. Under normal conditions, the elastic push rod 1004 pushes the extension piece 1003 and the movable rod 1001 out, so that the movable rod 1001 is inside the mounting frame 1. 01 is provided with a conical top block 1002 at one end facing the square through groove 103. Under the control of the elastic push rod 1004, when the trapezoidal slider 9 does not apply pressure to the elastic top rod 10, the elastic push rod 1004 pushes the movable rod 1001 into the mounting frame 1 and will not be exposed to the outside. When pushed by the trapezoidal slider 9, the elastic push rod 1004 is compressed, and the movable rod 1001 can push the conical top block 1002 outward, thereby pushing out the car door attached to the outer wall of the mounting frame 1.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. An emergency door opening mechanism, comprising a U-shaped mounting frame (1) placed on a B-pillar of a vehicle, characterized in that: A two-way folding frame (2) is fixedly arranged inside the installation frame (1), two detachable splicing hooks (4) are longitudinally installed inside the two-way folding frame (2), and two folding springs (3) are also arranged inside the two-way folding frame (2), and the two folding springs (3) are respectively connected to the upper and lower detachable splicing hooks (4), and under normal conditions, the two detachable splicing hooks (4) are kept in a combined state, and are used to cooperate with the door lock cylinder for locking control; The detachable splicing hook (4) is composed of a sliding mounting plate (401) slidably arranged in the bidirectional folding frame (2) and an L-shaped connecting rod (402), wherein the L-shaped connecting rod is fixedly arranged on the sliding mounting plate (401), and the upper and lower L-shaped detachable splicing hooks (4) are spliced ​​to form a U-shaped buckle for buckling the door lock cylinder; The installation frame (1) is provided with two first guide wheels (5) respectively located at the upper and lower positions of the two-way folding frame (2); a second guide wheel (6) is rotatably mounted at the center position of the inner side wall of the installation frame (1); a guide wire (403) is fixed on the side wall of the sliding installation plate (401); the guide wire (403) is fixedly connected to the second guide wheel (6) after passing through the first guide wheel (5); and a rotating pull member (7) for controlling the rotation of the second guide wheel (6) is rotatably mounted in the installation frame (1).

2. The emergency door opening mechanism according to claim 1, characterized in that: The bidirectional folding frame (2) is composed of two limit bars (201) respectively arranged on both sides of the inner wall of the installation frame (1) and a connecting middle column (202) for connecting the two limit bars (201); one end of the folding spring (3) is fixed on the connecting middle column (202), and the other end is connected to the sliding installation plate (401).

3. The emergency door opening mechanism according to claim 2, characterized in that: The two limiting strips (201) are provided with sliding grooves (203) on the side walls facing each other, and the two side walls of the sliding mounting plate (401) are provided with strip-shaped protrusions for being slidably inserted into the sliding grooves (203).

4. The emergency door opening mechanism according to claim 1, characterized in that: The rotating pull member (7) comprises a strip handle (701) and a retractable sleeve rod (702) fixedly arranged on the strip handle (701); the retractable sleeve rod (702) passes through the mounting frame (1) and is connected to the second guide wheel (6).

5. The emergency door opening mechanism according to claim 4, characterized in that: The top and bottom sides of the strip handle (701) are both provided with buckle grooves (703) for buckling with both hands to pull the strip handle (701) together with the retractable sleeve rod (702) out of the installation frame (1).

6. The emergency door opening mechanism according to claim 5, characterized in that: Side slots (704) are provided on both sides of the strip handle (701), and a rotating handle (705) is rotatably installed in the side slot (704). The two rotating handles (705) can be adsorbed and connected after being turned horizontally, and a blocking plate is provided at the middle position of the side slot (704) to limit the rotation angle of the rotating handle (705) to within 90 degrees.

7. The emergency door opening mechanism according to claim 6, characterized in that: The outer wall of the mounting frame (1) is provided with a strip receiving groove (101) for inserting the strip handle (701), and a circular through hole (102) is provided in the strip receiving groove (101) for passing the telescopic sleeve rod (702). A lock core insertion groove (104) connected to the detachable splicing hook (4) is provided on one side of the mounting frame (1) for the door lock core to enter.

8. The emergency door opening mechanism according to claim 7, characterized in that: The inner wall of the mounting frame (1) is provided with a strip-shaped slide groove (105), a trapezoidal slider (9) is slidably arranged in the strip-shaped slide groove (105), and the side wall of the trapezoidal slider (9) is provided with a sliding clamping strip (901) for clamping into the strip-shaped slide groove (105). The side wall of the trapezoidal slider (9) is fixedly connected to the detachable splicing hook (4) through an outward push connecting rod (8). When the two detachable splicing hooks (4) move, the trapezoidal slider (9) can be carried to move synchronously through the outward push connecting rod (8).

9. The emergency door opening mechanism according to claim 8, characterized in that: The inner side wall of the mounting frame (1) is also provided with an elastic push rod (10) which can be pushed out to the outside of the mounting frame (1) by a trapezoidal slider (9), and the mounting frame (1) is provided with a square through-groove (103) for the elastic push rod (10) to pass through.

10. The emergency door opening mechanism according to claim 9, characterized in that: The elastic push rod (10) is composed of a movable rod (1001) that can pass through a square through-slot (103), an extension piece (1003) fixedly arranged on one side of the movable rod (1001), and an elastic push rod (1004) fixed on the inner wall of the installation frame (1). The telescopic end of the elastic push rod (1004) is fixedly connected to the extension piece (1003). Under normal conditions, the elastic push rod (1004) pushes the extension piece (1003) and the movable rod (1001) out, so that the movable rod (1001) is located inside the installation frame (1). A conical push block (1002) is arranged at one end of the movable rod (1001) facing the square through-slot (103).

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