Multifunctional lock of safety accident prevention system

Abstract

The invention discloses a multifunctional lock of a safety accident prevention system, which comprises a lock body assembly and a switch assembly, the lock body assembly is limited on the switch assembly to lock a door, the lock body assembly is separated from the switch assembly to open the door, and the lock body assembly comprises a support unit, a door opening unit, an escape unit and a bolt unit. The door opening unit and the escape unit are both installed on the supporting unit and connected with the bolt unit, the door opening unit controls the bolt unit to be limited or separated from the switch assembly to achieve door locking or door opening, and the escape unit controls the bolt unit to be separated from the switch assembly to achieve door opening. Through high cooperation of operation separation and mechanical linkage of the escape unit and the door opening unit, it is ensured that the door is normally opened and closed from the outside conveniently and stably, the safety that internal rapid escape and false locking cannot be achieved under the emergency condition is ensured, and the defects that a traditional safety door lock is redundant in structure and complex in operation, and an internal escape device can be locked are effectively overcome.

Description

Technical Field

[0001] This invention relates to the field of locks and industrial protection products, and more specifically to a multifunctional lock for a safety accident prevention system. Background Technology

[0002] Modern industrial equipment typically uses wire mesh fencing to create enclosed areas and is equipped with safety doors for personnel, equipment, and materials to enter and exit. However, this process presents numerous safety hazards, such as the risk of personnel being trapped or doors accidentally opening while the equipment is running. To prevent such accidents, safety devices, including escape devices, interlocking safety switches, and padlocks, must be installed on the doors.

[0003] While some safety door locks on the market are equipped with escape handles that can be opened from the inside for emergency escape, they have a significant drawback: the escape handles can also be used to lock the door from the inside, which seriously violates safety regulations, creates potential safety hazards, and fails to meet the high safety requirements of modern industrial environments. To solve this problem, a multi-functional lock with a safety accident prevention system is needed to improve the level of industrial safety protection. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, the present invention aims to provide a multifunctional lock for a safety accident prevention system. By integrating the door opening unit, escape unit, and bolt unit onto a unified support unit, it achieves a high degree of synergy between internal and external operation separation and mechanical linkage. This ensures the convenience and stability of normal door opening and closing from the outside, while guaranteeing the safety of rapid internal escape in emergencies and preventing accidental locking. This design effectively solves the defects of traditional safety door locks, such as structural redundancy, complex operation, and the possibility of locking the internal escape device. It significantly improves the safety level and operational efficiency of industrial protective door locks and has good applicability.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A multi-functional lock for a safety accident prevention system includes a lock body assembly and a switch assembly. The lock body assembly is confined within the switch assembly to lock the door, and the lock body assembly is disengaged from the switch assembly to unlock the door.

[0007] The lock body assembly is characterized by comprising a support unit, an opening unit, an escape unit, and a bolt unit. The opening unit and the escape unit are both mounted on the support unit and connected to the bolt unit. The opening unit controls the bolt unit to be limited or disengaged from the switch assembly to lock or open the door, and the escape unit controls the bolt unit to disengage from the switch assembly to open the door.

[0008] By integrating the door opening unit, escape unit, and latch unit onto a unified support unit, a high degree of synergy between internal and external operation separation and mechanical linkage is achieved. This ensures the convenience and stability of normal door opening and closing from the outside, while guaranteeing the safety of rapid internal escape in emergencies and preventing accidental locking. This design effectively solves the defects of traditional safety door locks, such as structural redundancy, complex operation, and the possibility of locking the internal escape device. It significantly improves the safety level and operational efficiency of industrial protective door locks and has good applicability.

[0009] Furthermore, the door opening unit includes a switch handle, a switch handle connector, a switch handle square tube, and a switch toggle plate. The switch handle is connected to the switch handle connector, the switch handle connector is connected to the switch handle square tube, and the switch toggle plate is installed on the switch handle square tube. The switch toggle plate moves the latch unit left and right to lock and open the door.

[0010] Furthermore, the escape unit includes an escape handle, an escape handle connector, an escape handle square tube, and an escape lever. The escape handle is connected to the escape handle connector, the escape handle connector is connected to the escape handle square tube, and the escape lever is installed on the escape handle square tube. The escape lever moves the latch unit linearly to open the door.

[0011] Furthermore, the latch unit includes a mounting mechanism, a locking bolt, and a locking hook mechanism. The mounting mechanism is connected to the door opening unit and the escape unit. The locking bolt is mounted on the mounting mechanism, and the locking hook mechanism works with the switch assembly to lock and open the door.

[0012] Furthermore, the installation mechanism includes a front support plate, a rear support plate, a pin, and a pin clamp. The front support plate is connected to the door opening unit, and the rear support plate is connected to the escape unit. Both the front and rear support plates are provided with elongated holes. The pin passes through the rear support plate, the lock pin, and the front support plate in sequence to connect with the pin clamp.

[0013] Furthermore, the locking mechanism includes a locking hook and a locking hook spring. Both the locking hook and the locking hook spring are installed inside the locking pin. The locking hook is rotatably mounted on the pin shaft. The two ends of the locking hook spring are connected to the locking hook and the locking pin, respectively. The locking hook spring applies a spring force to the locking hook.

[0014] Furthermore, the locking mechanism also includes a locking hook rotating component and a rotating torsion spring. The locking hook rotating component is installed on the door opening unit, and the escape unit is provided with a rotating component actuating plate. The door opening unit and the rotating component actuating plate drive the locking hook rotating component to rotate and squeeze the locking hook. The two ends of the rotating torsion spring are respectively connected to the locking hook rotating component and the support unit, and the rotating torsion spring is used to control the locking hook rotating component to reset.

[0015] Furthermore, the latch unit also includes a locking plate, a locking plate torsion spring, a sliding clip, and a fixing member. The sliding clip is fixedly installed on the support unit by the fixing member. The locking plate is snapped onto the sliding clip and can slide along the sliding clip. The two ends of the locking plate torsion spring are connected to the locking plate and the support unit respectively. The locking plate has a square hole, and the locking pin has a hook. The hook is limited in the square hole. The movement of the locking pin drives the locking plate to slide. One end of the locking plate has a mounting hole, and one side of the support unit has a through groove. When the locking pin drives the locking plate to move, the mounting hole passes through the through groove.

[0016] The lock pin has a slot, and the lock plate has a bent part that is stuck in the slot.

[0017] Furthermore, the support unit includes a lock base plate, a lock cover, a support frame, connector clips, and a first fixing plate. Both the door opening unit and the escape unit are installed on the support frame. The connector clips engage with the door opening unit for fixation. The support frame is installed on the lock base plate. The lock cover is connected to the lock base plate. The lock cover and the lock base plate together enclose and protect the door opening unit and the escape unit. The first fixing plate is installed on the lock base plate and is used for the installation and fixation of the support unit.

[0018] Furthermore, the switch assembly includes a switch base plate, a switch cover plate, a hole clamp, and a second fixing plate. The switch base plate is connected to the switch cover plate, the hole clamp is installed on the switch base plate, and the hole clamp cooperates with the latch unit to realize opening and closing the door. The second fixing plate is installed on the switch base plate and is used for installing and fixing the switch assembly.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By integrating the door opening unit, escape unit, and latch unit onto a unified support unit, a high degree of coordination between internal and external operations and mechanical linkage is achieved. This ensures the convenience and stability of normal door opening and closing from the outside, while guaranteeing the safety of rapid internal escape in emergencies and preventing accidental locking. This design effectively solves the defects of traditional safety door locks, such as structural redundancy, complex operation, and the possibility of locking the internal escape device. It significantly improves the safety level and operational efficiency of industrial protective door locks and has good applicability.

[0021] 2. This invention adopts a modular structure design, allowing both the lock body and switch components to be installed and adjusted independently. This not only facilitates on-site installation and maintenance but also allows for flexible adaptation to various specifications of industrial protective doors and guardrail systems. This design significantly improves the product's applicability and assembly efficiency, reduces manufacturing and installation costs, and facilitates subsequent functional expansion and parts replacement. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Figure 1This is a schematic diagram of the structure of a multifunctional lock in a safety accident prevention system according to the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a multifunctional lock in a safety accident prevention system according to the present invention from another perspective;

[0025] Figure 3 This is an exploded view of the lock body assembly and the switch assembly in this invention;

[0026] Figure 4 This is a schematic diagram of the door opening unit, escape unit, and latch unit in this invention;

[0027] Figure 5 This is an exploded view of the support unit, door opening unit, and escape unit in this invention;

[0028] Figure 6 This is a schematic diagram showing the locking pin being positioned within the switch assembly in this invention;

[0029] Figure 7 For the present invention Figure 6 A sectional view.

[0030] In the diagram: 10 - Lock body assembly;

[0031] 11-Support unit; 111-Locking base plate; 1111-Through slot; 112-Locking cover; 113-Support frame; 114-Connector clip; 115-First fixing plate;

[0032] 12-Door opening unit; 121-Switch handle; 122-Switch handle connector; 123-Switch handle square tube; 124-Switch toggle piece; 125-Outer round piece;

[0033] 13-Escape unit; 131-Escape handle; 132-Escape handle connector; 133-Escape handle square tube; 134-Escape lever; 135-Rotating lever;

[0034] 14-Pin unit; 141-Mounting mechanism; 1411-Front support plate; 1412-Rear support plate; 1413-Pin shaft; 1414-Pin shaft clip; 142-Locking pin; 1421-Hook; 1422-Slot; 143-Locking hook mechanism; 1431-Locking hook; 1432-Locking hook spring; 1433-Locking hook rotating part; 1434-Rotating torsion spring; 144-Locking plate; 1441-Square hole; 1442-Mounting hole; 1443-Bent part; 145-Locking plate torsion spring; 146-Sliding clip; 147-Fixing part;

[0035] 20-Switch assembly; 21-Switch base plate; 22-Switch cover plate; 23-Hole clips; 24-Second fixing plate. Detailed Implementation

[0036] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0037] like Figures 1 to 5 As shown, a multifunctional lock for a safety accident prevention system according to the present invention includes a lock body assembly 10 and a switch assembly 20. When the lock body assembly 10 is confined in the switch assembly 20, the door is locked; when the lock body assembly 10 is disengaged from the switch assembly 20, the door is opened.

[0038] The lock body assembly 10 includes a support unit 11, an opening unit 12, an escape unit 13, and a bolt unit 14. The opening unit 12 and the escape unit 13 are both mounted on the support unit 11 and connected to each other. The opening unit 12 and the escape unit 13 are both connected to the bolt unit 14. The opening unit 12 controls the movement of the bolt unit 14. When the bolt unit 14 is confined in the switch assembly 20, the door is locked. When the bolt unit 14 is disengaged from the switch assembly 20, the door is opened. The escape unit 13 also controls the movement of the bolt unit 14, but the escape unit 13 can only control the bolt unit 14 to disengage from the switch assembly 20 to open the door.

[0039] This invention integrates the door opening unit 12, escape unit 13, and latch unit 14 onto a unified support unit 11, achieving a high degree of coordination between internal and external operation separation and mechanical linkage. This ensures the convenience and stability of normal door opening and closing from the outside, while also guaranteeing the safety of rapid internal escape in emergencies and preventing accidental locking. This design effectively solves the defects of traditional safety door locks, such as structural redundancy, complex operation, and the possibility of locking the internal escape device, significantly improving the safety level and operational efficiency of industrial protective door locks, and has good applicability.

[0040] The door opening unit 12 includes a switch handle 121, a switch handle connector 122, a switch handle square tube 123, and a switch toggle 124. The switch handle 121 is connected to the switch handle connector 122, and the switch handle connector 122 is connected to the switch handle square tube 123. The switch toggle 124 is mounted on the switch handle square tube 123. By rotating the switch handle 121, the switch handle 121 drives the switch handle connector 122 to rotate, thereby causing the switch handle square tube 123 to drive the switch toggle 124 to rotate. The switch toggle 124 moves the latch unit 14 left and right, thereby limiting or disengaging the latch unit 14 from the switch assembly 20, thus achieving door locking and unlocking. The structure of the door opening unit 12 achieves door opening and closing through mechanical linkage, which is simple to operate and has high transmission efficiency. The switch toggle 124 directly drives the latch unit 14 to move, with rapid response, improving reliability and ease of operation.

[0041] The escape unit 13 includes an escape handle 131, an escape handle connector 132, an escape handle square tube 133, and an escape toggle piece 134. The escape handle 131 is connected to the escape handle connector 132, and the escape handle connector 132 is connected to the escape handle square tube 133. The escape toggle piece 134 is installed on the escape handle square tube 133. By rotating the escape handle 131, the escape handle 131 drives the escape handle connector 132 to rotate, thereby causing the escape handle square tube 133 to drive the escape toggle piece 134 to rotate. The escape toggle piece 134 moves the latch unit 14 away from the switch assembly 20, thereby disengaging the latch unit 14 from the switch assembly 20 and realizing the one-way opening of the escape unit 13. The escape unit 13 is designed to ensure that it can be quickly opened from the inside in an emergency, and this operation is only one-way opening and cannot be relocked from the inside, completely eliminating the safety risks caused by misoperation, meeting safety specifications, and significantly improving emergency escape safety.

[0042] The support unit 11 includes a lock base plate 111, a lock cover 112, a support frame 113, a connector clip 114, and a first fixing plate 115. The door opening unit 12 and the escape unit 13 are both installed on the support frame 113. The connector clip 114 engages with the door opening unit 12 to fix the door opening unit 12 and the escape unit 13. The support frame 113 is installed on the lock base plate 111. The lock cover 112 is connected to the lock base plate 111. The lock cover 112 and the lock base plate 111 together protect the door opening unit 12 and the escape unit 13. The first fixing plate 115 is installed on the lock base plate 111. The support unit 11 provides stable support for all components of the lock. The protective design of the lock cover 112 and the lock base plate 111 effectively prevents external factors such as dust and moisture from corroding the lock, extending the service life of the lock, and improving the protection level and reliability of the overall structure.

[0043] The switch assembly 20 includes a switch base plate 21, a switch cover plate 22, a hole clamp 23, and a second fixing plate 24. The switch base plate 21 is connected to the switch cover plate 22. The hole clamp 23 is installed on the switch base plate 21 and limits the pin unit 14. The hole clamp 23 cooperates with the pin unit 14 to realize the opening and closing of the door. The second fixing plate 24 is installed on the switch base plate 21 and is used for the installation and fixing of the switch assembly 20.

[0044] The latch unit 14 includes a mounting mechanism 141, a locking pin 142, and a locking hook mechanism 143. The mounting mechanism 141 is installed inside the support unit 11 and is connected to the door opening unit 12 and the escape unit 13. The locking pin 142 is installed on the mounting mechanism 141. The door opening unit 12 and the escape unit 13 control the linear movement of the latch unit 14, that is, control the linear movement of the locking pin 142. The locking hook mechanism 143 is installed in the slot inside the locking pin 142. When the locking pin 142 moves into the switch assembly 20, the locking hook mechanism 143 limits the locking pin 142, thereby achieving the door locking effect. When it is necessary to open the door, the locking hook mechanism 143 is released by rotating the door opening unit 12 or the escape unit 13, thereby allowing the locking pin 142 to disengage from the hole locking piece 23 to achieve the door opening effect. The locking and opening of the door are achieved through the cooperation of the locking hook mechanism 143 and the hole locking piece 23.

[0045] The mounting mechanism 141 includes a front support plate 1411, a rear support plate 1412, a pin 1413, and a pin retainer 1414. One end of the front support plate 1411 is connected to the door opening unit 12, and one end of the rear support plate 1412 is connected to the escape unit 13. Both the front support plate 1411 and the rear support plate 1412 have elongated holes at their other ends. The pin 1413 passes sequentially through the elongated hole in the rear support plate 1412, the locking pin 142, and the elongated hole in the front support plate 1411, finally connecting to the pin retainer 1414. When the switch handle 121 is rotated, the switch toggle plate... 124 moves the front support plate 1411, which rotates around the axis of the door unit 12 and the escape unit 13, thereby driving the lock pin 142 to move. When the escape handle 131 is turned, the escape toggle piece 134 moves the rear support plate 1412, which rotates around the axis of the door unit 12 and the escape unit 13, thereby driving the lock pin 142 to move. Due to the design of the elongated hole, when the front support plate 1411 and the rear support plate 1412 rotate, the pin 1413 moves along the elongated hole, thereby realizing the linear movement of the lock pin 142.

[0046] The locking mechanism 143 includes a locking hook 1431, a locking hook spring 1432, a locking hook rotating component 1433, and a rotating torsion spring 1434. Both the locking hook 1431 and the locking hook spring 1432 are installed in slots inside the locking pin 142. The locking hook 1431, in conjunction with the hole-positioning clip 23, achieves a limiting effect, thereby locking the door. The locking hook 1431 has a hole through which it is rotatably mounted on the pin 1413. Both ends of the locking hook spring 1432 are connected to the bottom of the slots in the locking hook 1431 and the locking pin 142, respectively. The locking hook spring 1432 applies an elastic restoring force to the locking hook 1431. One end of the locking hook rotating component 1433 is installed on the switch handle square tube 123 of the door opening unit 12. When the switch handle square tube 123 is rotated via the switch handle 121, the switch handle square tube 123 drives... The locking hook rotating component 1433 rotates and presses the locking hook 1431. The locking hook 1431 rotates around the pin 1413 and compresses the locking hook spring 1432, keeping the locking hook 1431 in a horizontal state so that the locking pin 142 can disengage from the hole retainer 23. The escape unit 13 is provided with a rotating component actuating plate 135. When the escape handle 131 is rotated, the rotating component actuating plate 135 drives the locking hook rotating component 1433 to rotate and press the locking hook 1431. The locking hook 1431 rotates around the pin 1413 and compresses the locking hook spring 1432, keeping the locking hook 1431 in a horizontal state so that the locking pin 142 can disengage from the hole retainer 23. The two ends of the rotating torsion spring 1434 are respectively connected to the locking hook rotating component 1433 and the support unit 11. The rotating torsion spring 1434 is used to control the locking hook rotating component 1433 to reset.

[0047] In this embodiment, the locking mechanism 143 also includes an outer circular part 125, which is mounted on the square tube 123 of the switch handle, and the rotating torsion spring 1434 is sleeved on the outer circular part 125.

[0048] The latch unit 14 also includes a locking plate 144, a locking plate torsion spring 145, a sliding latch 146, and a fixing member 147. The sliding latch 146 is fixedly mounted on the lock base plate 111 via the fixing member 147. The locking plate 144 is latched onto the sliding latch 146 and can slide along the sliding latch 146. The two ends of the locking plate torsion spring 145 are respectively connected to the locking plate 144 and the lock base plate 111. The locking plate 144 has a square hole 1441, and the locking pin 142 has a hook 1421. The hook 1421 is limited in the square hole 1441. When the locking pin 142 moves, it drives the locking plate 144 to slide. One end of the locking plate 144 has a mounting hole 1442, and one side of the lock base plate 111 has a mounting hole 1442. With a through slot 1111, when the locking pin 142 moves the locking plate 144 away from the switch assembly 20, the mounting hole 1442 passes through the through slot 1111. The mounting hole 1442 can be used for padlock to prevent accidental closing of the door during internal maintenance or debugging of the equipment. The sliding connection between the locking plate 144 and the sliding latch 146 can ensure the stability of the locking plate 144 when moving. The locking pin 142 has a slot 1422, and the locking plate 144 has a bent part 1443. The bent part 1443 is stuck in the slot 1422. The cooperation between the slot 1422 and the bent part 1443 ensures the stability of the locking pin 142 moving the locking plate 144.

[0049] The opening process of this invention is as follows:

[0050] Rotating the switch handle 121 sequentially drives the switch handle connector 122, the switch handle square tube 123, and the switch toggle plate 124 to rotate. The switch toggle plate 124 moves the front support plate 1411, which in turn drives the lock pin 142 to move linearly. At the same time, the lock hook rotating part 1433 is driven by the switch handle square tube 123. During rotation, it presses down on the lock hook 1431 and compresses the lock hook spring 1432, keeping the lock hook 1431 in a horizontal state. This allows the lock pin 142 to exit the hole locking part 23. When the switch handle 121 is rotated to the correct position, the lock hook spring 1432 applies elastic force to the lock hook 1431, lifting the tail of the lock hook 1431 and returning it to its natural state, thereby opening the safety door. The mounting hole 1442 on the lock plate 144 passes through the through groove 1111 and protrudes outside the lock base plate 111. The lock is then hooked through the mounting hole 1442.

[0051] The closing process of this invention is as follows:

[0052] Rotating the switch handle 121 sequentially drives the switch handle connector 122, the switch handle square tube 123, and the switch toggle 124 to rotate. The switch toggle 124 moves the front support plate 1411, which in turn causes the lock pin 142 to move linearly. Simultaneously, the lock hook rotating part 1433, driven by the switch handle square tube 123, presses down on the lock hook 1431 and compresses the lock hook spring 1432 during rotation, keeping the lock hook 1431 in a horizontal state so that the lock pin 142 can pass through the hole retainer 23. When the switch handle 121 is rotated to the correct position, the lock hook spring 1432 applies elastic force to the lock hook 1431, lifting the tail of the lock hook 1431 and returning it to its natural state. The front of the lock hook 1431 then hooks the hole retainer 23, thereby locking the safety door.

[0053] The opening process of the escape unit 13 of the present invention is as follows:

[0054] Rotating the escape handle 131 sequentially drives the escape handle connector 132, the escape handle square tube 133, the escape actuating plate 134, and the rotating actuating plate 135 to rotate. The escape actuating plate 134 actuates the rear support plate 1412, which in turn drives the lock pin 142 to move linearly. Simultaneously, the rotating actuating plate 135 actuates the lock hook rotating component 1433, causing the lock hook 1431 to rotate. During rotation, the lock hook 1431 is pressed down, and the lock hook spring 1432 is compressed, keeping the lock hook 1431 in a horizontal state. This allows the lock pin 142 to exit the hole retainer 23. After the escape handle 131 is rotated to its position, the lock hook spring 1432 applies elastic force to the lock hook 1431, lifting the tail of the lock hook 1431 and returning it to its natural state, thereby opening the safety door and enabling escape.

[0055] The embodiments of the present invention are not limited thereto. Based on the above embodiments of the present invention, using conventional technical knowledge and common means in the art, without departing from the basic technical idea of ​​the present invention and without conflict, the above preferred embodiments can be modified, replaced or combined in various other forms. All other embodiments obtained fall within the protection scope of the present invention.

Claims

1. A multifunctional lock for a safety accident prevention system, comprising a lock body assembly and a switch assembly, wherein the lock body assembly is contained within the switch assembly to lock the door, and the lock body assembly is disengaged from the switch assembly to unlock the door; Its features are: The lock body assembly includes a support unit, an opening unit, an escape unit, and a bolt unit. The opening unit and the escape unit are both mounted on the support unit and are connected to the bolt unit. The opening unit controls the bolt unit to be limited or disengaged from the switch assembly to lock or unlock the door, and the escape unit controls the bolt unit to disengage from the switch assembly to unlock the door.

2. The multi-functional lock of the safety accident prevention system according to claim 1, characterized in that: The door opening unit includes a switch handle, a switch handle connector, a switch handle square tube, and a switch toggle piece. The switch handle is connected to the switch handle connector, the switch handle connector is connected to the switch handle square tube, and the switch toggle piece is installed on the switch handle square tube. The switch toggle piece moves the latch unit left and right to lock and open the door.

3. The multi-functional lock of the safety accident prevention system according to claim 1, characterized in that: The escape unit includes an escape handle, an escape handle connector, an escape handle square tube, and an escape lever. The escape handle is connected to the escape handle connector, the escape handle connector is connected to the escape handle square tube, and the escape lever is installed on the escape handle square tube. The escape lever moves the latch unit linearly to open the door.

4. The multi-functional lock of the safety accident prevention system according to claim 1, characterized in that: The latch unit includes an installation mechanism, a locking pin, and a locking hook mechanism. The installation mechanism is connected to the door opening unit and the escape unit. The locking pin is installed on the installation mechanism. The locking hook mechanism cooperates with the switch assembly to lock and open the door.

5. The multifunctional lock of the safety accident prevention system according to claim 4, characterized in that: The installation mechanism includes a front support plate, a rear support plate, a pin, and a pin clamp. The front support plate is connected to the door opening unit, and the rear support plate is connected to the escape unit. Both the front and rear support plates are provided with elongated holes. The pin passes through the rear support plate, the lock pin, and the front support plate in sequence, and is connected to the pin clamp.

6. The multifunctional lock of the safety accident prevention system according to claim 5, characterized in that: The locking mechanism includes a locking hook and a locking hook spring. Both the locking hook and the locking hook spring are installed inside the locking pin. The locking hook is rotatably mounted on the pin shaft. The two ends of the locking hook spring are respectively connected to the locking hook and the locking pin. The locking hook spring applies a spring force to the locking hook.

7. The multifunctional lock of the safety accident prevention system according to claim 6, characterized in that: The locking mechanism also includes a locking hook rotating component and a rotating torsion spring. The locking hook rotating component is installed on the door opening unit. The escape unit is provided with a rotating component actuating plate. The door opening unit and the rotating component actuating plate drive the locking hook rotating component to rotate and squeeze the locking hook. The two ends of the rotating torsion spring are respectively connected to the locking hook rotating component and the support unit. The rotating torsion spring is used to control the locking hook rotating component to reset.

8. The multifunctional lock of the safety accident prevention system according to claim 4, characterized in that: The latch unit further includes a locking plate, a locking plate torsion spring, a sliding clip, and a fixing member. The sliding clip is fixedly installed on the support unit by the fixing member. The locking plate is engaged with the sliding clip and can slide along the sliding clip. The two ends of the locking plate torsion spring are respectively connected to the locking plate and the support unit. The locking plate has a square hole, and the locking pin has a hook. The hook is limited in the square hole. The movement of the locking pin drives the locking plate to slide. One end of the locking plate has a mounting hole, and one side of the support unit has a through groove. When the locking pin drives the locking plate to move, the mounting hole passes through the through groove. The locking pin has a slot, and the locking plate has a bent part that is engaged in the slot.

9. The multifunctional lock of the safety accident prevention system according to claim 1, characterized in that: The support unit includes a lock base plate, a lock cover, a support frame, a connector clip, and a first fixing plate. The door opening unit and the escape unit are both installed on the support frame. The connector clip engages with the door opening unit for fixation. The support frame is installed on the lock base plate. The lock cover is connected to the lock base plate. The lock cover and the lock base plate together protect the door opening unit and the escape unit. The first fixing plate is installed on the lock base plate and is used for the installation and fixation of the support unit.

10. A multifunctional lock for a safety accident prevention system according to claim 1, characterized in that: The switch assembly includes a switch base plate, a switch cover plate, a hole clamp, and a second fixing plate. The switch base plate is connected to the switch cover plate, the hole clamp is installed on the switch base plate, and the hole clamp cooperates with the latch unit to realize opening and closing the door. The second fixing plate is installed on the switch base plate and is used for installing and fixing the switch assembly.

Images